diff --git a/app/Album.php b/app/Album.php
index e375df9..158357c 100644
--- a/app/Album.php
+++ b/app/Album.php
@@ -2,6 +2,7 @@
 
 namespace App;
 
+use App\AlbumSources\AlbumSourceBase;
 use App\AlbumSources\IAlbumSource;
 use App\AlbumSources\LocalFilesystemSource;
 use App\Helpers\MiscHelper;
@@ -158,10 +159,7 @@ class Album extends Model
      */
     public function getAlbumSource()
     {
-        $fullClassName = sprintf('App\AlbumSources\%s', $this->storage->source);
-
-        /** @var IAlbumSource $source */
-        $source = new $fullClassName;
+        $source = AlbumSourceBase::make($this->storage->source);
         $source->setAlbum($this);
         $source->setConfiguration($this->storage);
 
diff --git a/app/AlbumSources/AlbumSourceBase.php b/app/AlbumSources/AlbumSourceBase.php
index 364bc39..374e17f 100644
--- a/app/AlbumSources/AlbumSourceBase.php
+++ b/app/AlbumSources/AlbumSourceBase.php
@@ -17,6 +17,31 @@ abstract class AlbumSourceBase
      */
     protected $configuration;
 
+    /**
+     * @var mixed
+     */
+    private static $albumSourceCache = [];
+
+    /**
+     * Makes an album source class for the given source name (relative class name.)
+     * @param string $sourceName Name of the source.
+     * @return IAlbumSource
+     */
+    public static function make($sourceName)
+    {
+        $fullClassName = sprintf('App\AlbumSources\%s', $sourceName);
+
+        if (!array_key_exists($fullClassName, self::$albumSourceCache))
+        {
+            /** @var IAlbumSource $source */
+            $source = app($fullClassName);
+
+            self::$albumSourceCache[$fullClassName] = $source;
+        }
+
+        return self::$albumSourceCache[$fullClassName];
+    }
+
     public function setAlbum(Album $album)
     {
         $this->album = $album;
diff --git a/app/AlbumSources/BackblazeB2Source.php b/app/AlbumSources/BackblazeB2Source.php
new file mode 100644
index 0000000..b206c1a
--- /dev/null
+++ b/app/AlbumSources/BackblazeB2Source.php
@@ -0,0 +1,248 @@
+<?php
+
+namespace App\AlbumSources;
+
+use App\BackblazeB2FileIdCache;
+use App\Photo;
+use App\Services\BackblazeB2Service;
+use App\Storage;
+use Guzzle\Http\EntityBody;
+use Illuminate\Support\Facades\Log;
+
+class BackblazeB2Source extends AlbumSourceBase implements IAlbumSource
+{
+    const BUCKET_TYPE_AUTO = 0;
+    const BUCKET_TYPE_PRIVATE = 1;
+    const BUCKET_TYPE_PUBLIC = 2;
+
+    /**
+     * @var BackblazeB2Service
+     */
+    private $backblaze;
+
+    /**
+     * Type of bucket which determines what type of URLs to generate to images.
+     * @var integer
+     */
+    private $bucketType;
+
+    /**
+     * Token used to download files from a private bucket.
+     * @var string
+     */
+    private $downloadToken;
+
+    /**
+     * Deletes an entire album's media contents.
+     * @return void
+     */
+    public function deleteAlbumContents()
+    {
+        // No need to do anything for the album container - once the files are gone, the virtual folder is also gone
+    }
+
+    /**
+     * Deletes a thumbnail file for a photo.
+     * @param Photo $photo Photo to delete the thumbnail from.
+     * @param string $thumbnail Thumbnail to delete (or null to delete the original.)
+     * @return void
+     */
+    public function deleteThumbnail(Photo $photo, $thumbnail = null)
+    {
+        $pathOnStorage = $this->getPathToPhoto($photo, $thumbnail);
+
+        // Create or update our cache record
+
+        $b2Cache = $this->getB2FileFromCache($pathOnStorage);
+        if (is_null($b2Cache))
+        {
+            return;
+        }
+
+        $this->getClient()->deleteFile($b2Cache->b2_file_id, $pathOnStorage);
+        $b2Cache->delete();
+    }
+
+    /**
+     * Fetches the contents of a thumbnail for a photo.
+     * @param Photo $photo Photo to fetch the thumbnail for.
+     * @param string $thumbnail Thumbnail to fetch (or null to fetch the original.)
+     * @return EntityBody
+     */
+    public function fetchPhotoContent(Photo $photo, $thumbnail = null)
+    {
+        $pathOnStorage = $this->getPathToPhoto($photo, $thumbnail);
+
+        // First we need the file ID
+
+        $b2Cache = $this->getB2FileFromCache($pathOnStorage);
+        if (is_null($b2Cache))
+        {
+            return EntityBody::fromString('');
+        }
+
+        return EntityBody::fromString(
+            $this->getClient()->downloadFile($b2Cache->b2_file_id)
+        );
+    }
+
+    /**
+     * Gets the name of this album source.
+     * @return string
+     */
+    public function getName()
+    {
+        return 'global.album_sources.backblaze_b2';
+    }
+
+    /**
+     * Gets the absolute URL to the given photo file.
+     * @param Photo $photo Photo to get the URL to.
+     * @param string $thumbnail Thumbnail to get the image to.
+     * @return string
+     */
+    public function getUrlToPhoto(Photo $photo, $thumbnail = null)
+    {
+        $client = $this->getClient();
+        $pathOnStorage = $this->getPathToPhoto($photo, $thumbnail);
+
+        switch ($this->bucketType)
+        {
+            case self::BUCKET_TYPE_PRIVATE:
+                if (is_null($this->downloadToken))
+                {
+                    $this->downloadToken = $client->getDownloadAuthToken();
+                }
+
+                // Once I sort out the issue with b2_download_file_by_id, this line can be removed
+                return sprintf('%s/file/%s/%s?Authorization=%s', $client->getDownloadUrl(), $this->configuration->container_name, $pathOnStorage, $this->downloadToken);
+
+                $b2Cache = $this->getB2FileFromCache($pathOnStorage);
+                if (is_null($b2Cache))
+                {
+                    return '';
+                }
+
+                return sprintf('%s/b2api/v2/b2_download_file_by_id?fileId=%s&Authorization=%s', $client->getDownloadUrl(), urlencode($b2Cache->b2_file_id), urlencode($this->downloadToken));
+
+            case self::BUCKET_TYPE_PUBLIC:
+                /*
+                 * From https://www.backblaze.com/b2/docs/b2_download_file_by_name.html:
+                 * The base URL to use comes from the b2_authorize_account call, and looks something like
+                 * https://f345.backblazeb2.com. The "f" in the URL stands for "file", and the number is the cluster
+                 * number containing your account. To this base, you add "file/", your bucket name, a "/", and then the
+                 * name of the file. The file name may itself include more "/" characters.
+                 */
+                return sprintf('%s/file/%s/%s', $client->getDownloadUrl(), $this->configuration->container_name, $pathOnStorage);
+        }
+    }
+
+    /**
+     * Saves a generated thumbnail to its permanent location.
+     * @param Photo $photo Photo the image relates to.
+     * @param string $tempFilename Filename containing the image.
+     * @param string $thumbnail Name of the thumbnail (or null for the original.)
+     * @return mixed
+     */
+    public function saveThumbnail(Photo $photo, $tempFilename, $thumbnail = null)
+    {
+        $pathOnStorage = $this->getPathToPhoto($photo, $thumbnail);
+
+        $b2Cache = $this->getB2FileFromCache($pathOnStorage);
+        if (!is_null($b2Cache))
+        {
+            // Delete the current file version if we're replacing a file that already exists
+            $this->getClient()->deleteFile($b2Cache->b2_file_id, $pathOnStorage);
+        }
+
+        // Upload the file to B2
+        $b2FileID = $this->getClient()->uploadFile($tempFilename, $pathOnStorage);
+
+        // Create or update our cache record
+        if (is_null($b2Cache))
+        {
+            $b2Cache = new BackblazeB2FileIdCache([
+                'photo_id' => $photo->id,
+                'storage_path' => $pathOnStorage,
+                'b2_file_id' => $b2FileID
+            ]);
+        }
+        else
+        {
+            $b2Cache->b2_file_id = $b2FileID;
+        }
+
+        $b2Cache->save();
+    }
+
+    public function setConfiguration(Storage $configuration)
+    {
+        parent::setConfiguration($configuration);
+    }
+
+    /**
+     * @param $pathOnStorage
+     * @return BackblazeB2FileIdCache|null
+     */
+    private function getB2FileFromCache($pathOnStorage)
+    {
+        $b2Cache = BackblazeB2FileIdCache::where('storage_path', $pathOnStorage)->first();
+        if (is_null($b2Cache))
+        {
+            // TODO: lookup the file on B2 to get the file ID
+            Log::warning(sprintf('B2 file ID not found in cache: %s', $pathOnStorage));
+            return null;
+        }
+
+        return $b2Cache;
+    }
+
+    private function getClient()
+    {
+        if (is_null($this->backblaze))
+        {
+            $this->backblaze = new BackblazeB2Service();
+            $this->backblaze->setCredentials(decrypt($this->configuration->access_key), decrypt($this->configuration->secret_key));
+            $this->backblaze->authorizeAccount();
+            $this->backblaze->setBucketName($this->configuration->container_name);
+
+            if (intval($this->configuration->b2_bucket_type) == self::BUCKET_TYPE_AUTO)
+            {
+                /* Auto-detect the type of bucket in use on B2 */
+
+                switch ($this->backblaze->getBucketType())
+                {
+                    case 'allPrivate':
+                        $this->configuration->b2_bucket_type = self::BUCKET_TYPE_PRIVATE;
+                        break;
+
+                    case 'allPublic':
+                        $this->configuration->b2_bucket_type = self::BUCKET_TYPE_PUBLIC;
+                        break;
+                }
+
+                $this->configuration->save();
+            }
+
+            // Set the bucket type
+            $this->bucketType = $this->configuration->b2_bucket_type;
+        }
+
+        return $this->backblaze;
+    }
+
+    private function getOriginalsFolder()
+    {
+        return '_originals';
+    }
+
+    private function getPathToPhoto(Photo $photo, $thumbnail = null)
+    {
+        return sprintf(
+            '%s/%s/%s',
+            $this->album->url_alias,
+            is_null($thumbnail) ? $this->getOriginalsFolder() : $thumbnail,
+            $photo->storage_file_name
+        );
+    }
+}
\ No newline at end of file
diff --git a/app/BackblazeB2FileIdCache.php b/app/BackblazeB2FileIdCache.php
new file mode 100644
index 0000000..b1765cd
--- /dev/null
+++ b/app/BackblazeB2FileIdCache.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class BackblazeB2FileIdCache extends Model
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'photo_id',
+        'storage_path',
+        'b2_file_id'
+    ];
+}
diff --git a/app/Exceptions/BackblazeRetryException.php b/app/Exceptions/BackblazeRetryException.php
new file mode 100644
index 0000000..557ebfd
--- /dev/null
+++ b/app/Exceptions/BackblazeRetryException.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Exceptions;
+
+use Throwable;
+
+class BackblazeRetryException extends \Exception
+{
+    private $innerException;
+
+    /**
+     * @return mixed
+     */
+    public function getInnerException()
+    {
+        return $this->innerException;
+    }
+
+    public function __construct($httpCode, \Exception $innerException)
+    {
+        parent::__construct('Backblaze requested to retry the request');
+
+        $this->innerException = $innerException;
+    }
+}
\ No newline at end of file
diff --git a/app/Helpers/ConfigHelper.php b/app/Helpers/ConfigHelper.php
index 2ae648c..c432d46 100644
--- a/app/Helpers/ConfigHelper.php
+++ b/app/Helpers/ConfigHelper.php
@@ -3,6 +3,7 @@
 namespace App\Helpers;
 
 use App\AlbumSources\AmazonS3Source;
+use App\AlbumSources\BackblazeB2Source;
 use App\AlbumSources\IAlbumSource;
 use App\AlbumSources\LocalFilesystemSource;
 use App\AlbumSources\OpenStackSource;
@@ -46,6 +47,7 @@ class ConfigHelper
         $classes = [
             LocalFilesystemSource::class,
             AmazonS3Source::class,
+            BackblazeB2Source::class,
             OpenStackSource::class,
             RackspaceSource::class
         ];
diff --git a/app/Http/Controllers/Admin/StorageController.php b/app/Http/Controllers/Admin/StorageController.php
index 7093643..6a1c775 100644
--- a/app/Http/Controllers/Admin/StorageController.php
+++ b/app/Http/Controllers/Admin/StorageController.php
@@ -88,7 +88,8 @@ class StorageController extends Controller
             'container_name',
             'cdn_url',
             'access_key',
-            'secret_key'
+            'secret_key',
+            'b2_bucket_type'
         ]));
         $storage->is_active = true;
         $storage->is_default = (strtolower($request->get('is_default')) == 'on');
@@ -217,7 +218,8 @@ class StorageController extends Controller
             'container_name',
             'cdn_url',
             'access_key',
-            'secret_key'
+            'secret_key',
+            'b2_bucket_type'
         ]));
         $storage->is_active = (strtolower($request->get('is_active')) == 'on');
         $storage->is_default = (strtolower($request->get('is_default')) == 'on');
diff --git a/app/Services/BackblazeB2Service.php b/app/Services/BackblazeB2Service.php
new file mode 100644
index 0000000..ceab613
--- /dev/null
+++ b/app/Services/BackblazeB2Service.php
@@ -0,0 +1,400 @@
+<?php
+
+namespace App\Services;
+
+use App\Exceptions\BackblazeRetryException;
+use Illuminate\Support\Facades\Log;
+
+class BackblazeB2Service
+{
+    /**
+     * The individual URL for the account to use to access the API
+     * @var string
+     */
+    private $accountApiUrl;
+
+    /**
+     * ID of the account in Backblaze B2.
+     * @var string
+     */
+    private $accountID;
+
+    /**
+     * The base URL for public access to the account's files.
+     * @var string
+     */
+    private $downloadUrl;
+
+    /**
+     * Authorisation header for authenticating to the API.
+     * @var string
+     */
+    private $authHeader;
+
+    /**
+     * Authorisation token for accessing the API post-authentication.
+     * @var string
+     */
+    private $authToken;
+
+    /**
+     * ID of the bucket.
+     * @var string
+     */
+    private $bucketId;
+
+    /**
+     * Type of the bucket.
+     * @var integer
+     */
+    private $bucketType;
+
+    /**
+     * Configuration related to the Backblaze B2 service.
+     * @var \Illuminate\Config\Repository|mixed
+     */
+    private $config;
+
+    /**
+     * Current file upload token.
+     * @var string
+     */
+    private $uploadAuthToken;
+
+    /**
+     * Current upload URL.
+     * @var string
+     */
+    private $uploadUrl;
+
+    public function __construct()
+    {
+        $this->config = config('services.backblaze_b2');
+    }
+
+    public function authorizeAccount($force = false)
+    {
+        if (empty($this->authToken) || $force)
+        {
+            $result = $this->sendRequest($this->config['auth_url']);
+
+            if (!isset($result->authorizationToken))
+            {
+                throw new \Exception('Authorisation to Backblaze failed. Is the API key correct?');
+            }
+
+            $this->authToken = $result->authorizationToken;
+            $this->accountApiUrl = $result->apiUrl;
+            $this->accountID = $result->accountId;
+            $this->downloadUrl = $result->downloadUrl;
+        }
+    }
+
+    public function deleteFile($fileID, $fileName)
+    {
+        $this->sendRequest(
+            sprintf('%s/b2api/v2/b2_delete_file_version', $this->accountApiUrl),
+            'POST',
+            [
+                'fileId' => $fileID,
+                'fileName' => $fileName
+            ]
+        );
+    }
+
+    public function downloadFile($fileID)
+    {
+        return $this->sendRequest(
+            sprintf('%s/b2api/v2/b2_download_file_by_id?fileId=%s', $this->accountApiUrl, urlencode($fileID)),
+            'GET',
+            null,
+            [
+                'http_headers' => [
+                    sprintf('Authorization: %s', $this->authToken)
+                ],
+                'response_body_is_json' => false
+            ]
+        );
+    }
+
+    public function getBucketType()
+    {
+        return $this->bucketType;
+    }
+
+    public function getDownloadAuthToken()
+    {
+        $result = $this->sendRequest(
+            sprintf('%s/b2api/v2/b2_get_download_authorization', $this->accountApiUrl),
+            'POST',
+            [
+                'bucketId' => $this->bucketId,
+                'validDurationInSeconds' => intval($this->config['download_token_lifetime']),
+                'fileNamePrefix' => ''
+            ]
+        );
+
+        return $result->authorizationToken;
+    }
+
+    public function getDownloadUrl()
+    {
+        return $this->downloadUrl;
+    }
+
+    public function setBucketName($bucketName)
+    {
+        $bucketDetails = $this->getBucketDetailsFromName($bucketName);
+
+        $this->bucketId = $bucketDetails->bucketId;
+        $this->bucketType = $bucketDetails->bucketType;
+    }
+
+    public function setCredentials($applicationKeyID, $applicationKey)
+    {
+        $this->authHeader = sprintf('%s:%s', $applicationKeyID, $applicationKey);
+    }
+
+    public function uploadFile($pathToFileToUpload, $pathToStorage)
+    {
+        // Get a URL to upload our file to
+        list($uploadUrl, $authorizationToken) = $this->getUploadUrl();
+
+        if (empty($uploadUrl) || empty($authorizationToken))
+        {
+            throw new \Exception('No upload URL/authorization token returned from Backblaze B2.');
+        }
+
+        $exponentialBackoff = 1;
+        $numberOfRetries = 5; // this effectively gives us 31 seconds of retries (1+2+4+8+16)
+        $numberOfTimesTried = 0;
+
+        while ($numberOfTimesTried < $numberOfRetries)
+        {
+            try
+            {
+                return $this->uploadFileReal($pathToFileToUpload, $pathToStorage, $uploadUrl, $authorizationToken);
+            }
+            catch (BackblazeRetryException $ex)
+            {
+                sleep($exponentialBackoff);
+
+                // Get a new upload token
+                $this->uploadAuthToken = null;
+                $this->uploadUrl = null;
+
+                list($uploadUrl, $authorizationToken) = $this->getUploadUrl();
+
+                // Keep backing off
+                $exponentialBackoff *= $exponentialBackoff;
+                $numberOfTimesTried++;
+            }
+        }
+    }
+
+    private function uploadFileReal($pathToFileToUpload, $pathToStorage, $uploadUrl, $authorizationToken)
+    {
+        $fileSize = filesize($pathToFileToUpload);
+        $handle = fopen($pathToFileToUpload, 'r');
+        $fileContents = fread($handle, $fileSize);
+        fclose($handle);
+        $fileContentsSha1 = sha1_file($pathToFileToUpload);
+
+        $httpHeaders = [
+            sprintf('Authorization: %s', $authorizationToken),
+            'Content-Type: b2/x-auto',
+            sprintf('X-Bz-Content-Sha1: %s', $fileContentsSha1),
+            sprintf('X-Bz-File-Name: %s', urlencode($pathToStorage))
+        ];
+
+        $result = $this->sendRequestReal(
+            $uploadUrl,
+            'POST',
+            $fileContents,
+            [
+                'http_headers' => $httpHeaders,
+                'post_body_is_json' => false
+            ]
+        );
+
+        return $result->fileId;
+    }
+
+    private function getBucketDetailsFromName($bucketName)
+    {
+        $result = $this->sendRequest(
+            sprintf('%s/b2api/v2/b2_list_buckets', $this->accountApiUrl),
+            'POST',
+            [
+                'accountId' => $this->accountID,
+                'bucketName' => $bucketName
+            ]
+        );
+
+        if (isset($result->buckets) && is_array($result->buckets) && count($result->buckets) >= 1)
+        {
+            return $result->buckets[0];
+        }
+
+        throw new \Exception(sprintf('The bucket \'%s\' was not found or your API key does not have access.', $bucketName));
+    }
+
+    private function getUploadUrl($alwaysGetNewToken = false)
+    {
+        if (is_null($this->uploadAuthToken) || $alwaysGetNewToken)
+        {
+            $result = $this->sendRequest(
+                sprintf('%s/b2api/v2/b2_get_upload_url', $this->accountApiUrl),
+                'POST',
+                ['bucketId' => $this->bucketId]
+            );
+
+            $this->uploadAuthToken = $result->authorizationToken;
+            $this->uploadUrl = $result->uploadUrl;
+        }
+
+        return [$this->uploadUrl, $this->uploadAuthToken];
+    }
+
+    private function getBasicHttpClient($url, $method = 'GET', array $httpHeaders = [])
+    {
+        $httpHeaders = array_merge(
+            [
+                'Accept: application/json'
+            ],
+            $httpHeaders
+        );
+
+        $ch = curl_init($url);
+        curl_setopt($ch, CURLOPT_HTTPHEADER, $httpHeaders);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+
+        switch (strtoupper($method))
+        {
+            case 'GET':
+                curl_setopt($ch, CURLOPT_HTTPGET, true);
+                break;
+
+            case 'POST':
+                curl_setopt($ch, CURLOPT_POST, true);
+                break;
+        }
+
+        return $ch;
+    }
+
+    private function sendRequest($url, $method = 'GET', $postData = null, array $postOptions = [])
+    {
+        $exponentialBackoff = 1;
+        $numberOfRetries = 5; // this effectively gives us 31 seconds of retries (1+2+4+8+16)
+        $numberOfTimesTried = 0;
+
+        while ($numberOfTimesTried < $numberOfRetries)
+        {
+            try
+            {
+                return $this->sendRequestReal($url, $method, $postData, $postOptions);
+            }
+            catch (BackblazeRetryException $ex)
+            {
+                // Clear the upload token if requested
+                if (isset($postOptions['clear_upload_token_on_retry']) && $postOptions['clear_upload_token_on_retry'])
+                {
+                    $this->uploadAuthToken = null;
+                    $this->uploadUrl = null;
+                }
+
+                // Keep backing off
+                sleep($exponentialBackoff);
+                $exponentialBackoff *= $exponentialBackoff;
+                $numberOfTimesTried++;
+            }
+        }
+    }
+
+    private function sendRequestReal($url, $method = 'GET', $postData = null, array $postOptions = [])
+    {
+        $postOptions = array_merge(
+            [
+                'authorization_token' => null,
+                'http_headers' => [],
+                'post_body_is_json' => true,
+                'response_body_is_json' => true
+            ],
+            $postOptions
+        );
+        $httpHeaders = $postOptions['http_headers'];
+
+        // Some methods may need to override the authorization token used
+        if (empty($postOptions['authorization_token']))
+        {
+            // No override - work out which auth token to use
+            if (is_null($this->authToken))
+            {
+                // No auth token yet, use username/password
+                $httpHeaders[] = sprintf('Authorization: Basic %s', base64_encode($this->authHeader));
+            }
+            else
+            {
+                // Use the auth token we have
+                $httpHeaders[] = sprintf('Authorization: %s', $this->authToken);
+            }
+        }
+        else
+        {
+            // Override - use the auth token specified
+            $httpHeaders[] = sprintf('Authorization: %s', $postOptions['authorization_token']);
+        }
+
+        $ch = $this->getBasicHttpClient($url, $method, $httpHeaders);
+
+        if (!is_null($postData))
+        {
+            if ($postOptions['post_body_is_json'])
+            {
+                $postData = json_encode($postData);
+            }
+
+            curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
+        }
+
+        Log::info(sprintf('%s: %s', strtoupper($method), $url));
+        Log::debug('HTTP headers:', $httpHeaders);
+
+        // Only log a post body if we have one and it's in JSON format (i.e. not a file upload)
+        if (!is_null($postData) && $postOptions['post_body_is_json'])
+        {
+            Log::debug($postData);
+        }
+
+        $result = curl_exec($ch);
+        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+        Log::info(sprintf('Received HTTP code %d', $httpCode));
+
+        // Only log a result if we have one and it's in JSON format (i.e. not a file download)
+        if (!is_null($result) && $result !== false && $postOptions['response_body_is_json'])
+        {
+            Log::debug($result);
+        }
+
+        // According to the Backblaze B2 Protocol, if we get a 500/503, we should retry the request
+        if ($httpCode == 500 || $httpCode == 503)
+        {
+            throw new BackblazeRetryException(
+                $httpCode,
+                new \Exception(sprintf('Exception from Backblaze B2: %s', $result))
+            );
+        }
+        else if ($httpCode != 200 && $httpCode != 304)
+        {
+            throw new \Exception(sprintf('Exception from Backblaze B2: %s', $result));
+        }
+
+        curl_close($ch);
+
+        return $postOptions['response_body_is_json']
+            ? json_decode($result)
+            : $result;
+    }
+}
\ No newline at end of file
diff --git a/app/Storage.php b/app/Storage.php
index cd7cd42..660178c 100644
--- a/app/Storage.php
+++ b/app/Storage.php
@@ -30,7 +30,8 @@ class Storage extends Model
         'container_name',
         'cdn_url',
         'access_key',
-        'secret_key'
+        'secret_key',
+        'b2_bucket_type'
     ];
 
     public function albums()
diff --git a/composer.json b/composer.json
index f0988ea..5cdad6d 100644
--- a/composer.json
+++ b/composer.json
@@ -6,6 +6,7 @@
     "type": "project",
     "require": {
         "php": ">=7.0.0",
+        "ext-curl": "*",
         "ext-json": "*",
         "laravel/framework": "5.5.*",
         "rackspace/php-opencloud": "^1.16",
diff --git a/composer.lock b/composer.lock
index 329849f..8229830 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,20 +4,20 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "359fa33910865037863ae6ae724af956",
+    "content-hash": "53d67647c5a4d0d450470522c903f745",
     "packages": [
         {
             "name": "aws/aws-sdk-php",
-            "version": "3.105.0",
+            "version": "3.111.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/aws/aws-sdk-php.git",
-                "reference": "3a1159eeb14f707780817bebf73dd3eeeeb710cc"
+                "reference": "a31376012346118b2b88df6d2f0c185af71e3096"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/3a1159eeb14f707780817bebf73dd3eeeeb710cc",
-                "reference": "3a1159eeb14f707780817bebf73dd3eeeeb710cc",
+                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/a31376012346118b2b88df6d2f0c185af71e3096",
+                "reference": "a31376012346118b2b88df6d2f0c185af71e3096",
                 "shasum": ""
             },
             "require": {
@@ -87,7 +87,7 @@
                 "s3",
                 "sdk"
             ],
-            "time": "2019-07-08T18:16:57+00:00"
+            "time": "2019-09-09T18:13:28+00:00"
         },
         {
             "name": "doctrine/cache",
@@ -389,28 +389,30 @@
         },
         {
             "name": "doctrine/lexer",
-            "version": "1.0.2",
+            "version": "1.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/lexer.git",
-                "reference": "1febd6c3ef84253d7c815bed85fc622ad207a9f8"
+                "reference": "e17f069ede36f7534b95adec71910ed1b49c74ea"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/lexer/zipball/1febd6c3ef84253d7c815bed85fc622ad207a9f8",
-                "reference": "1febd6c3ef84253d7c815bed85fc622ad207a9f8",
+                "url": "https://api.github.com/repos/doctrine/lexer/zipball/e17f069ede36f7534b95adec71910ed1b49c74ea",
+                "reference": "e17f069ede36f7534b95adec71910ed1b49c74ea",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.2"
+                "php": "^7.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.5"
+                "doctrine/coding-standard": "^6.0",
+                "phpstan/phpstan": "^0.11.8",
+                "phpunit/phpunit": "^8.2"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "1.1.x-dev"
                 }
             },
             "autoload": {
@@ -423,14 +425,14 @@
                 "MIT"
             ],
             "authors": [
-                {
-                    "name": "Roman Borschel",
-                    "email": "roman@code-factory.org"
-                },
                 {
                     "name": "Guilherme Blanco",
                     "email": "guilhermeblanco@gmail.com"
                 },
+                {
+                    "name": "Roman Borschel",
+                    "email": "roman@code-factory.org"
+                },
                 {
                     "name": "Johannes Schmitt",
                     "email": "schmittjoh@gmail.com"
@@ -445,20 +447,20 @@
                 "parser",
                 "php"
             ],
-            "time": "2019-06-08T11:03:04+00:00"
+            "time": "2019-07-30T19:33:28+00:00"
         },
         {
             "name": "egulias/email-validator",
-            "version": "2.1.9",
+            "version": "2.1.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/egulias/EmailValidator.git",
-                "reference": "128cc721d771ec2c46ce59698f4ca42b73f71b25"
+                "reference": "92dd169c32f6f55ba570c309d83f5209cefb5e23"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/egulias/EmailValidator/zipball/128cc721d771ec2c46ce59698f4ca42b73f71b25",
-                "reference": "128cc721d771ec2c46ce59698f4ca42b73f71b25",
+                "url": "https://api.github.com/repos/egulias/EmailValidator/zipball/92dd169c32f6f55ba570c309d83f5209cefb5e23",
+                "reference": "92dd169c32f6f55ba570c309d83f5209cefb5e23",
                 "shasum": ""
             },
             "require": {
@@ -468,7 +470,8 @@
             "require-dev": {
                 "dominicsayers/isemail": "dev-master",
                 "phpunit/phpunit": "^4.8.35||^5.7||^6.0",
-                "satooshi/php-coveralls": "^1.0.1"
+                "satooshi/php-coveralls": "^1.0.1",
+                "symfony/phpunit-bridge": "^4.4@dev"
             },
             "suggest": {
                 "ext-intl": "PHP Internationalization Libraries are required to use the SpoofChecking validation"
@@ -476,7 +479,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "2.1.x-dev"
                 }
             },
             "autoload": {
@@ -502,7 +505,7 @@
                 "validation",
                 "validator"
             ],
-            "time": "2019-06-23T10:14:27+00:00"
+            "time": "2019-08-13T17:33:27+00:00"
         },
         {
             "name": "erusev/parsedown",
@@ -835,25 +838,25 @@
         },
         {
             "name": "kylekatarnls/update-helper",
-            "version": "1.1.1",
+            "version": "1.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/kylekatarnls/update-helper.git",
-                "reference": "b34a46d7f5ec1795b4a15ac9d46b884377262df9"
+                "reference": "5786fa188e0361b9adf9e8199d7280d1b2db165e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/kylekatarnls/update-helper/zipball/b34a46d7f5ec1795b4a15ac9d46b884377262df9",
-                "reference": "b34a46d7f5ec1795b4a15ac9d46b884377262df9",
+                "url": "https://api.github.com/repos/kylekatarnls/update-helper/zipball/5786fa188e0361b9adf9e8199d7280d1b2db165e",
+                "reference": "5786fa188e0361b9adf9e8199d7280d1b2db165e",
                 "shasum": ""
             },
             "require": {
-                "composer-plugin-api": "^1.1.0",
+                "composer-plugin-api": "^1.1.0 || ^2.0.0",
                 "php": ">=5.3.0"
             },
             "require-dev": {
                 "codeclimate/php-test-reporter": "dev-master",
-                "composer/composer": "^2.0.x-dev",
+                "composer/composer": "2.0.x-dev || ^2.0.0-dev",
                 "phpunit/phpunit": ">=4.8.35 <6.0"
             },
             "type": "composer-plugin",
@@ -876,20 +879,20 @@
                 }
             ],
             "description": "Update helper",
-            "time": "2019-06-05T08:34:23+00:00"
+            "time": "2019-07-29T11:03:54+00:00"
         },
         {
             "name": "laravel/framework",
-            "version": "v5.5.45",
+            "version": "v5.5.48",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/framework.git",
-                "reference": "52c79ecf54b6168a54730ccb6c4c9f3561732a80"
+                "reference": "e3e8d585dcfab5abe6261b060f4df0d48f9924bf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/framework/zipball/52c79ecf54b6168a54730ccb6c4c9f3561732a80",
-                "reference": "52c79ecf54b6168a54730ccb6c4c9f3561732a80",
+                "url": "https://api.github.com/repos/laravel/framework/zipball/e3e8d585dcfab5abe6261b060f4df0d48f9924bf",
+                "reference": "e3e8d585dcfab5abe6261b060f4df0d48f9924bf",
                 "shasum": ""
             },
             "require": {
@@ -1010,7 +1013,7 @@
                 "framework",
                 "laravel"
             ],
-            "time": "2019-01-28T20:53:19+00:00"
+            "time": "2019-08-20T15:46:40+00:00"
         },
         {
             "name": "laravel/socialite",
@@ -1077,16 +1080,16 @@
         },
         {
             "name": "league/flysystem",
-            "version": "1.0.53",
+            "version": "1.0.55",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "08e12b7628f035600634a5e76d95b5eb66cea674"
+                "reference": "33c91155537c6dc899eacdc54a13ac6303f156e6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/08e12b7628f035600634a5e76d95b5eb66cea674",
-                "reference": "08e12b7628f035600634a5e76d95b5eb66cea674",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/33c91155537c6dc899eacdc54a13ac6303f156e6",
+                "reference": "33c91155537c6dc899eacdc54a13ac6303f156e6",
                 "shasum": ""
             },
             "require": {
@@ -1157,7 +1160,7 @@
                 "sftp",
                 "storage"
             ],
-            "time": "2019-06-18T20:09:29+00:00"
+            "time": "2019-08-24T11:17:19+00:00"
         },
         {
             "name": "league/oauth1-client",
@@ -1251,16 +1254,16 @@
         },
         {
             "name": "monolog/monolog",
-            "version": "1.24.0",
+            "version": "1.25.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "bfc9ebb28f97e7a24c45bdc3f0ff482e47bb0266"
+                "reference": "70e65a5470a42cfec1a7da00d30edb6e617e8dcf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/bfc9ebb28f97e7a24c45bdc3f0ff482e47bb0266",
-                "reference": "bfc9ebb28f97e7a24c45bdc3f0ff482e47bb0266",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/70e65a5470a42cfec1a7da00d30edb6e617e8dcf",
+                "reference": "70e65a5470a42cfec1a7da00d30edb6e617e8dcf",
                 "shasum": ""
             },
             "require": {
@@ -1325,7 +1328,7 @@
                 "logging",
                 "psr-3"
             ],
-            "time": "2018-11-05T09:00:11+00:00"
+            "time": "2019-09-06T13:49:17+00:00"
         },
         {
             "name": "mtdowling/cron-expression",
@@ -1534,22 +1537,22 @@
         },
         {
             "name": "php-amqplib/php-amqplib",
-            "version": "v2.9.2",
+            "version": "v2.10.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-amqplib/php-amqplib.git",
-                "reference": "76faddcd668dabb8d4f7c00e86b8a9decd781a59"
+                "reference": "04e5366f032906d5f716890427e425e71307d3a8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-amqplib/php-amqplib/zipball/76faddcd668dabb8d4f7c00e86b8a9decd781a59",
-                "reference": "76faddcd668dabb8d4f7c00e86b8a9decd781a59",
+                "url": "https://api.github.com/repos/php-amqplib/php-amqplib/zipball/04e5366f032906d5f716890427e425e71307d3a8",
+                "reference": "04e5366f032906d5f716890427e425e71307d3a8",
                 "shasum": ""
             },
             "require": {
                 "ext-bcmath": "*",
                 "ext-sockets": "*",
-                "php": ">=5.4.0"
+                "php": ">=5.6"
             },
             "replace": {
                 "videlalvaro/php-amqplib": "self.version"
@@ -1557,14 +1560,14 @@
             "require-dev": {
                 "ext-curl": "*",
                 "nategood/httpful": "^0.2.20",
-                "phpdocumentor/phpdocumentor": "^2.9",
-                "phpunit/phpunit": "^4.8",
+                "phpdocumentor/phpdocumentor": "dev-master",
+                "phpunit/phpunit": "^5.7|^6.5|^7.0",
                 "squizlabs/php_codesniffer": "^2.5"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.8-dev"
+                    "dev-master": "2.10-dev"
                 }
             },
             "autoload": {
@@ -1583,18 +1586,18 @@
                 },
                 {
                     "name": "John Kelly",
-                    "email": "johnmkelly86@gmail.com",
-                    "role": "Maintainer"
+                    "role": "Maintainer",
+                    "email": "johnmkelly86@gmail.com"
                 },
                 {
                     "name": "Raúl Araya",
-                    "email": "nubeiro@gmail.com",
-                    "role": "Maintainer"
+                    "role": "Maintainer",
+                    "email": "nubeiro@gmail.com"
                 },
                 {
                     "name": "Luke Bakken",
-                    "email": "luke@bakken.io",
-                    "role": "Maintainer"
+                    "role": "Maintainer",
+                    "email": "luke@bakken.io"
                 }
             ],
             "description": "Formerly videlalvaro/php-amqplib.  This library is a pure PHP implementation of the AMQP protocol. It's been tested against RabbitMQ.",
@@ -1604,7 +1607,7 @@
                 "queue",
                 "rabbitmq"
             ],
-            "time": "2019-04-24T15:36:21+00:00"
+            "time": "2019-08-08T18:28:18+00:00"
         },
         {
             "name": "psr/container",
@@ -2043,16 +2046,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v3.4.29",
+            "version": "v3.4.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "c4d2f3529755ffc0be9fb823583b28d8744eeb3d"
+                "reference": "4510f04e70344d70952566e4262a0b11df39cb10"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/c4d2f3529755ffc0be9fb823583b28d8744eeb3d",
-                "reference": "c4d2f3529755ffc0be9fb823583b28d8744eeb3d",
+                "url": "https://api.github.com/repos/symfony/console/zipball/4510f04e70344d70952566e4262a0b11df39cb10",
+                "reference": "4510f04e70344d70952566e4262a0b11df39cb10",
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             },
             "require": {
@@ -2111,7 +2114,7 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2019-06-05T11:33:52+00:00"
+            "time": "2019-08-26T07:52:58+00:00"
         },
         {
             "name": "symfony/css-selector",
@@ -2168,16 +2171,16 @@
         },
         {
             "name": "symfony/debug",
-            "version": "v3.4.29",
+            "version": "v3.4.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/debug.git",
-                "reference": "1172dc1abe44dfadd162239153818b074e6e53bf"
+                "reference": "0b600300918780001e2821db77bc28b677794486"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/debug/zipball/1172dc1abe44dfadd162239153818b074e6e53bf",
-                "reference": "1172dc1abe44dfadd162239153818b074e6e53bf",
+                "url": "https://api.github.com/repos/symfony/debug/zipball/0b600300918780001e2821db77bc28b677794486",
+                "reference": "0b600300918780001e2821db77bc28b677794486",
                 "shasum": ""
             },
             "require": {
@@ -2220,7 +2223,7 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
-            "time": "2019-06-18T21:26:03+00:00"
+            "time": "2019-08-20T13:31:17+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -2284,16 +2287,16 @@
         },
         {
             "name": "symfony/finder",
-            "version": "v3.4.29",
+            "version": "v3.4.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "5f80266a729e30bbcc37f8bf0e62c3d5a38c8208"
+                "reference": "1fcad80b440abcd1451767349906b6f9d3961d37"
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             "dist": {
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-                "url": "https://api.github.com/repos/symfony/finder/zipball/5f80266a729e30bbcc37f8bf0e62c3d5a38c8208",
-                "reference": "5f80266a729e30bbcc37f8bf0e62c3d5a38c8208",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/1fcad80b440abcd1451767349906b6f9d3961d37",
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             "require": {
@@ -2329,20 +2332,20 @@
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             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2019-05-30T15:47:52+00:00"
+            "time": "2019-08-14T09:39:58+00:00"
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v3.4.29",
+            "version": "v3.4.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "8cfbf75bb3a72963b12c513a73e9247891df24f8"
+                "reference": "b3d57a1c325f39f703b249bed7998ce8c64236b4"
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             "dist": {
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-                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/8cfbf75bb3a72963b12c513a73e9247891df24f8",
-                "reference": "8cfbf75bb3a72963b12c513a73e9247891df24f8",
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@@ -2383,20 +2386,20 @@
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             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2019-06-22T20:10:25+00:00"
+            "time": "2019-08-26T07:50:50+00:00"
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         {
             "name": "sebastian/global-state",
@@ -4945,16 +4948,16 @@
         },
         {
             "name": "webmozart/assert",
-            "version": "1.4.0",
+            "version": "1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webmozart/assert.git",
-                "reference": "83e253c8e0be5b0257b881e1827274667c5c17a9"
+                "reference": "88e6d84706d09a236046d686bbea96f07b3a34f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/83e253c8e0be5b0257b881e1827274667c5c17a9",
-                "reference": "83e253c8e0be5b0257b881e1827274667c5c17a9",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/88e6d84706d09a236046d686bbea96f07b3a34f4",
+                "reference": "88e6d84706d09a236046d686bbea96f07b3a34f4",
                 "shasum": ""
             },
             "require": {
@@ -4962,8 +4965,7 @@
                 "symfony/polyfill-ctype": "^1.8"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.6",
-                "sebastian/version": "^1.0.1"
+                "phpunit/phpunit": "^4.8.36 || ^7.5.13"
             },
             "type": "library",
             "extra": {
@@ -4992,7 +4994,7 @@
                 "check",
                 "validate"
             ],
-            "time": "2018-12-25T11:19:39+00:00"
+            "time": "2019-08-24T08:43:50+00:00"
         }
     ],
     "aliases": [],
@@ -5001,7 +5003,9 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=7.0.0"
+        "php": ">=7.0.0",
+        "ext-curl": "*",
+        "ext-json": "*"
     },
     "platform-dev": []
 }
diff --git a/config/services.php b/config/services.php
index eab4683..e7ace08 100644
--- a/config/services.php
+++ b/config/services.php
@@ -14,6 +14,11 @@ return [
     |
     */
 
+    'backblaze_b2' => [
+        'auth_url' => 'https://api.backblazeb2.com/b2api/v2/b2_authorize_account',
+        'download_token_lifetime' => 300
+    ],
+
     'gitea' => [
         'api_url' => 'https://apps.andysh.uk/api/v1',
         'cache_time_seconds' => 3600,
diff --git a/database/migrations/2019_09_09_205137_add_backblaze_storage_columns.php b/database/migrations/2019_09_09_205137_add_backblaze_storage_columns.php
new file mode 100644
index 0000000..e6d3e74
--- /dev/null
+++ b/database/migrations/2019_09_09_205137_add_backblaze_storage_columns.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddBackblazeStorageColumns extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('storages', function (Blueprint $table)
+        {
+            $table->tinyInteger('b2_bucket_type')->default(0);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('storages', function (Blueprint $table)
+        {
+            $table->dropColumn('b2_bucket_type');
+        });
+    }
+}
diff --git a/database/migrations/2019_09_10_085020_create_backblaze_b2_file_id_caches_table.php b/database/migrations/2019_09_10_085020_create_backblaze_b2_file_id_caches_table.php
new file mode 100644
index 0000000..1b7ac4d
--- /dev/null
+++ b/database/migrations/2019_09_10_085020_create_backblaze_b2_file_id_caches_table.php
@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateBackblazeB2FileIdCachesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('backblaze_b2_file_id_caches', function (Blueprint $table) {
+            $table->bigIncrements('id');
+            $table->unsignedBigInteger('photo_id');
+            $table->string('storage_path');
+            $table->string('b2_file_id');
+            $table->timestamps();
+
+            $table->foreign('photo_id')
+                ->references('id')->on('photos')
+                ->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('backblaze_b2_file_id_caches');
+    }
+}
diff --git a/public/b2_test.php b/public/b2_test.php
new file mode 100644
index 0000000..a741604
--- /dev/null
+++ b/public/b2_test.php
@@ -0,0 +1,143 @@
+<?php
+
+function b2_authorize_account()
+{
+    $application_key_id = "0023254ec9bda08000000000a"; // Obtained from your B2 account page
+    $application_key = "K002eARNPUlxdj1XaVJbwEYPMz0c7e8"; // Obtained from your B2 account page
+    $credentials = base64_encode($application_key_id . ":" . $application_key);
+    $url = "https://api.backblazeb2.com/b2api/v2/b2_authorize_account";
+
+    $session = curl_init($url);
+
+    // Add headers
+    $headers = array();
+    $headers[] = "Accept: application/json";
+    $headers[] = "Authorization: Basic " . $credentials;
+    curl_setopt($session, CURLOPT_HTTPHEADER, $headers);  // Add headers
+
+    curl_setopt($session, CURLOPT_HTTPGET, true);  // HTTP GET
+    curl_setopt($session, CURLOPT_RETURNTRANSFER, true); // Receive server response
+    $server_output = curl_exec($session);
+    curl_close ($session);
+    echo ($server_output);
+
+    return json_decode($server_output);
+}
+
+function b2_download_file_by_id($download_url, $auth_token)
+{
+    //$download_url = ""; // From b2_authorize_account call
+    $file_id = "4_z731245f41efc196b6dda0018_f116729ca6de74b38_d20190910_m132847_c002_v0001127_t0021"; // The ID of the file you want to download
+    $uri = $download_url . "/b2api/v2/b2_download_file_by_id?fileId=" . $file_id;
+
+    $session = curl_init($uri);
+
+    curl_setopt($session, CURLOPT_HTTPGET, true); // HTTP GET
+    curl_setopt($session, CURLOPT_RETURNTRANSFER, true);  // Receive server response
+
+    echo '<p>' . $uri . '</p>';
+
+    $server_output = curl_exec($session); // Let's do this!
+
+    if (curl_getinfo($session, CURLINFO_HTTP_CODE) != 200)
+    {
+        echo '<p>' . $server_output . '</p>';
+    }
+    else
+    {
+        echo '<p>' . (strlen($server_output) . ' bytes received') . '</p>'; // Tell me about the rabbits, George!
+    }
+
+    curl_close ($session); // Clean up
+
+    //$download_url = ""; // From b2_authorize_account call
+    $file_id = "4_z731245f41efc196b6dda0018_f116729ca6de74b38_d20190910_m132847_c002_v0001127_t0021"; // The ID of the file you want to download
+    $uri = $download_url . "/b2api/v2/b2_download_file_by_id?fileId=" . $file_id . '&Authorization=' . $auth_token;
+
+    $session = curl_init($uri);
+
+    curl_setopt($session, CURLOPT_HTTPGET, true); // HTTP GET
+    curl_setopt($session, CURLOPT_RETURNTRANSFER, true);  // Receive server response
+
+    echo '<p>' . $uri . '</p>';
+
+    $server_output = curl_exec($session); // Let's do this!
+
+    if (curl_getinfo($session, CURLINFO_HTTP_CODE) != 200)
+    {
+        echo '<p>' . $server_output . '</p>';
+    }
+    else
+    {
+        echo '<p>' . (strlen($server_output) . ' bytes received') . '</p>'; // Tell me about the rabbits, George!
+    }
+
+    curl_close ($session); // Clean up
+}
+
+function b2_download_file_by_name($download_url, $auth_token)
+{
+    //$download_url = ""; // From b2_authorize_account call
+    $bucket_name = "andysh-bt-test";  // The NAME of the bucket you want to download from
+    $file_name = "B2-Test-Album/preview/7tgoy55do1vjv180ytlp.jpeg"; // The name of the file you want to download
+    $uri = $download_url . "/file/" . $bucket_name . "/" . $file_name;
+
+    $session = curl_init($uri);
+
+    curl_setopt($session, CURLOPT_HTTPGET, true); // HTTP GET
+    curl_setopt($session, CURLOPT_SSL_VERIFYPEER, false);
+    curl_setopt($session, CURLOPT_RETURNTRANSFER, true);  // Receive server response
+
+    echo '<p>' . $uri . '</p>';
+
+    $server_output = curl_exec($session); // Let's do this!
+
+    if (curl_getinfo($session, CURLINFO_HTTP_CODE) != 200)
+    {
+        echo '<p>' . $server_output . '</p>';
+    }
+    else
+    {
+        echo '<p>' . (strlen($server_output) . ' bytes received') . '</p>'; // Tell me about the rabbits, George!
+    }
+
+    curl_close ($session); // Clean up
+
+    // You will need to use the account authorization token if your bucket's type is allPrivate.
+
+    //$download_url = ""; // From b2_authorize_account call
+    $bucket_name = "andysh-bt-test";  // The NAME of the bucket you want to download from
+    $file_name = "B2-Test-Album/preview/7tgoy55do1vjv180ytlp.jpeg"; // The name of the file you want to download
+    //$auth_token = ""; // From b2_authorize_account call
+    $uri = $download_url . "/file/" . $bucket_name . "/" . $file_name . '?Authorization=' . $auth_token;
+
+    $session = curl_init($uri);
+
+    curl_setopt($session, CURLOPT_HTTPGET, true); // HTTP POST
+    curl_setopt($session, CURLOPT_RETURNTRANSFER, true);  // Receive server response
+
+    echo '<p>' . $uri . '</p>';
+
+    $server_output = curl_exec($session); // Let's do this!
+
+    if (curl_getinfo($session, CURLINFO_HTTP_CODE) != 200)
+    {
+        echo '<p>' . $server_output . '</p>';
+    }
+    else
+    {
+        echo '<p>' . (strlen($server_output) . ' bytes received') . '</p>'; // Tell me about the rabbits, George!
+    }
+
+    curl_close ($session); // Clean up
+}
+
+?>
+<h2>b2_authorize_account</h2>
+<?php $authorize_account_result = b2_authorize_account(); ?>
+
+<h2>b2_download_file_by_name</h2>
+<?php b2_download_file_by_name($authorize_account_result->downloadUrl, $authorize_account_result->authorizationToken); ?>
+
+<h2>b2_download_file_by_id</h2>
+<?php b2_download_file_by_id($authorize_account_result->downloadUrl, $authorize_account_result->authorizationToken); ?>
diff --git a/readme.md b/readme.md
index de4f604..f959c4d 100644
--- a/readme.md
+++ b/readme.md
@@ -6,28 +6,24 @@ It takes advantage of modern frameworks (Laravel, Bootstrap 4, VueJS) as well as
 
 You can see Blue Twilight in action on my own photo gallery - the reason I wrote Blue Twilight - at: [photos.andysh.uk](https://photos.andysh.uk)
 
-## Version 2 Branch (2.0, 2.1, etc.)
+## Blue Twilight Cloud
 
-Version 2 is the first version I have released as open-source. The previous version (1.1.2) was only ever used on my own gallery.
-
-This is a major update that includes 2 key new features: fine-grained security controls, and nested albums. It also updates the default template to Bootstrap v4 and VueJS (replacing KnockoutJS.)
-
-With the launch of version 2.0.0, this has now been officially released - see the [Releases](https://apps.andysh.uk/aheathershaw/blue-twilight/releases) page for the latest version.
+If you want your own dedicated, private instance of Blue Twilight without the hassle of managing servers, hosting and updates - check out [Blue Twilight Cloud](https://showmy.photos).
 
 ## Demo System
 
-See Blue Twilight in action using the demo system. Full details are [available here](https://andysh.uk/software/blue-twilight-php-photo-gallery/demo/).
+See Blue Twilight in action using the demo system. Full details are [available here](https://showmy.photos/demo/).
 
-The link to the demo system is: http://demo.showmy.photos. Login with:
+The link to the demo system is: https://demo.showmy.photos. Login with:
 
 * Username: **demo@demo.com**
 * Password: **demo123**
 
 ## Useful Links
 
-* [Blue Twilight website](https://andysh.uk/software/blue-twilight-php-photo-gallery/)
-* [User Manual](https://andysh.uk/software/blue-twilight-php-photo-gallery/manual/)
-* [Installation Guide](https://andysh.uk/software/blue-twilight-php-photo-gallery/manual/installation/)
+* [Blue Twilight website](https://showmy.photos/)
+* [User Manual](https://showmy.photos/user-guide/)
+* [Installation Guide](https://showmy.photos/user-guide/installation/)
 * [Issues/Tasks](https://apps.andysh.uk/aheathershaw/blue-twilight/issues)
 * [Roadmap](https://apps.andysh.uk/aheathershaw/blue-twilight/milestones)
 
diff --git a/resources/lang/en/admin.php b/resources/lang/en/admin.php
index 6940c04..b844d06 100644
--- a/resources/lang/en/admin.php
+++ b/resources/lang/en/admin.php
@@ -323,6 +323,7 @@ return [
         'photos' => 'photo|photos',
         'users' => 'user|users',
     ],
+    'storage_backblaze_access_key_id_help' => 'To use your account\'s master key, enter your account ID here.',
     'storage_title' => 'Storage Locations',
     'sysinfo_panel' => 'System information',
     'sysinfo_widget' => [
diff --git a/resources/lang/en/forms.php b/resources/lang/en/forms.php
index ceda533..0e1cc96 100644
--- a/resources/lang/en/forms.php
+++ b/resources/lang/en/forms.php
@@ -98,7 +98,15 @@ return [
     'storage_access_key_label' => 'Access key:',
     'storage_active_label' => 'Location is active. Uncheck to prevent creating new albums in this location.',
     'storage_api_key_label' => 'API key:',
+    'storage_application_key_id_label' => 'Application key ID:',
+    'storage_application_key_label' => 'Application key:',
     'storage_auth_url_label' => 'Authentication URL:',
+    'storage_b2_bucket_type' => [
+        'autodetect' => 'Auto-detect',
+        'label' => 'Bucket type:',
+        'private' => 'Private',
+        'public' => 'Public'
+    ],
     'storage_bucket_name_label' => 'Bucket name:',
     'storage_cdn_url_label' => 'Public CDN URL (if supported and enabled):',
     'storage_container_name_label' => 'Container name:',
diff --git a/resources/lang/en/global.php b/resources/lang/en/global.php
index 0f83c7b..c5da0bd 100644
--- a/resources/lang/en/global.php
+++ b/resources/lang/en/global.php
@@ -2,6 +2,7 @@
 return [
     'album_sources' => [
         'amazon_s3' => 'Amazon S3 (or S3-compatible)',
+        'backblaze_b2' => 'Backblaze B2 Cloud',
         'filesystem' => 'Local filesystem',
         'openstack' => 'OpenStack cloud storage',
         'rackspace' => 'Rackspace cloud storage'
diff --git a/resources/views/themes/base/admin/create_storage.blade.php b/resources/views/themes/base/admin/create_storage.blade.php
index f14e2cb..679e144 100644
--- a/resources/views/themes/base/admin/create_storage.blade.php
+++ b/resources/views/themes/base/admin/create_storage.blade.php
@@ -63,6 +63,10 @@
                         @include(Theme::viewName('partials.admin_storages_rackspace_options'))
                     </div>
 
+                    <div v-if="storage_driver == 'BackblazeB2Source'">
+                        @include(Theme::viewName('partials.admin_storages_backblaze_b2_options'))
+                    </div>
+
                     <div class="form-check">
                         <input type="checkbox" class="form-check-input" id="is-default" name="is_default"@if (old('is_default', $storage->is_default)) checked="checked"@endif>
                         <label class="form-check-label" for="is-default">@lang('forms.default_storage_label')</label>
diff --git a/resources/views/themes/base/admin/edit_storage.blade.php b/resources/views/themes/base/admin/edit_storage.blade.php
index e4302dc..c7d4705 100644
--- a/resources/views/themes/base/admin/edit_storage.blade.php
+++ b/resources/views/themes/base/admin/edit_storage.blade.php
@@ -61,6 +61,11 @@
                         @include(Theme::viewName('partials.admin_storages_rackspace_options'))
                     @endif
 
+                    <div v-if="storage_driver == 'BackblazeB2Source'">
+                        <hr/>
+                        @include(Theme::viewName('partials.admin_storages_backblaze_b2_options'))
+                    </div>
+
                     <div class="text-right">
                         <a href="{{ route('storage.index') }}" class="btn btn-default">@lang('forms.cancel_action')</a>
                         <button type="submit" class="btn btn-success"><i class="fa fa-fw fa-check"></i> @lang('forms.save_action')</button>
diff --git a/resources/views/themes/base/partials/admin_storages_backblaze_b2_options.blade.php b/resources/views/themes/base/partials/admin_storages_backblaze_b2_options.blade.php
new file mode 100644
index 0000000..4450e21
--- /dev/null
+++ b/resources/views/themes/base/partials/admin_storages_backblaze_b2_options.blade.php
@@ -0,0 +1,58 @@
+<div class="row">
+    <div class="col-md-6">
+        <div class="form-group">
+            <label class="form-control-label" for="access-key">@lang('forms.storage_application_key_id_label')</label>
+            <input type="text" class="form-control{{ $errors->has('access_key') ? ' is-invalid' : '' }}" id="access-key" name="access_key" value="{{ old('access_key', $storage->access_key) }}">
+            <small class="form-text text-muted">@lang('admin.storage_backblaze_access_key_id_help')</small>
+
+            @if ($errors->has('access_key'))
+                <div class="invalid-feedback">
+                    <strong>{{ $errors->first('access_key') }}</strong>
+                </div>
+            @endif
+        </div>
+    </div>
+    <div class="col-md-6">
+        <div class="form-group">
+            <label class="form-control-label" for="secret-key">@lang('forms.storage_application_key_label')</label>
+            <input type="text" class="form-control{{ $errors->has('secret_key') ? ' is-invalid' : '' }}" id="secret-key" name="secret_key" value="{{ old('secret_key', $storage->secret_key) }}">
+
+            @if ($errors->has('secret_key'))
+                <div class="invalid-feedback">
+                    <strong>{{ $errors->first('secret_key') }}</strong>
+                </div>
+            @endif
+        </div>
+    </div>
+</div>
+
+<div class="row">
+    <div class="col-md-6">
+        <div class="form-group">
+            <label class="form-control-label" for="container-name">@lang('forms.storage_bucket_name_label')</label>
+            <input type="text" class="form-control{{ $errors->has('container_name') ? ' is-invalid' : '' }}" id="container-name" name="container_name" value="{{ old('container_name', $storage->container_name) }}">
+
+            @if ($errors->has('container_name'))
+                <div class="invalid-feedback">
+                    <strong>{{ $errors->first('container_name') }}</strong>
+                </div>
+            @endif
+        </div>
+    </div>
+    <div class="col-md-6">
+        <div class="form-group">
+            <label class="form-control-label" for="b2-bucket-type">@lang('forms.storage_b2_bucket_type.label')</label>
+            <select class="form-control{{ $errors->has('b2_bucket_type') ? ' is-invalid' : '' }}" id="b2-bucket-type" name="b2_bucket_type">
+                <option value="0"{{ old('b2_bucket_type', $storage->b2_bucket_type) === 0 ? ' selected="selected"' : '' }}>@lang('forms.storage_b2_bucket_type.autodetect')</option>
+                <option value="1"{{ old('b2_bucket_type', $storage->b2_bucket_type) === 1 ? ' selected="selected"' : '' }}>@lang('forms.storage_b2_bucket_type.private')</option>
+                <option value="2"{{ old('b2_bucket_type', $storage->b2_bucket_type) === 2 ? ' selected="selected"' : '' }}>@lang('forms.storage_b2_bucket_type.public')</option>
+            </select>
+
+            @if ($errors->has('b2_bucket_type'))
+                <div class="invalid-feedback">
+                    <strong>{{ $errors->first('b2_bucket_type') }}</strong>
+                </div>
+            @endif
+        </div>
+    </div>
+</div>
\ No newline at end of file