diff --git a/.env.example b/.env.example
index 47f2367b0..05383f04a 100644
--- a/.env.example
+++ b/.env.example
@@ -12,11 +12,13 @@
 APP_KEY=SomeRandomString
 
 # Application URL
-# Remove the hash below and set a URL if using BookStack behind
-# a proxy or if using a third-party authentication option.
 # This must be the root URL that you want to host BookStack on.
-# All URL's in BookStack will be generated using this value.
-#APP_URL=https://example.com
+# All URLs in BookStack will be generated using this value
+# to ensure URLs generated are consistent and secure.
+# If you change this in the future you may need to run a command
+# to update stored URLs in the database. Command example:
+# php artisan bookstack:update-url https://old.example.com https://new.example.com
+APP_URL=https://example.com
 
 # Database details
 DB_HOST=localhost
@@ -28,8 +30,8 @@ DB_PASSWORD=database_user_password
 # Can be 'smtp' or 'sendmail'
 MAIL_DRIVER=smtp
 
-# Mail sender options
-MAIL_FROM_NAME=BookStack
+# Mail sender details
+MAIL_FROM_NAME="BookStack"
 MAIL_FROM=bookstack@example.com
 
 # SMTP mail options
diff --git a/app/Config/filesystems.php b/app/Config/filesystems.php
index bd7d28300..30a5c5369 100644
--- a/app/Config/filesystems.php
+++ b/app/Config/filesystems.php
@@ -42,13 +42,6 @@ return [
             'root'   => storage_path(),
         ],
 
-        'ftp' => [
-            'driver'   => 'ftp',
-            'host'     => 'ftp.example.com',
-            'username' => 'your-username',
-            'password' => 'your-password',
-        ],
-
         's3' => [
             'driver' => 's3',
             'key'    => env('STORAGE_S3_KEY', 'your-key'),
@@ -59,16 +52,6 @@ return [
             'use_path_style_endpoint' => env('STORAGE_S3_ENDPOINT', null) !== null,
         ],
 
-        'rackspace' => [
-            'driver'    => 'rackspace',
-            'username'  => 'your-username',
-            'key'       => 'your-key',
-            'container' => 'your-container',
-            'endpoint'  => 'https://identity.api.rackspacecloud.com/v2.0/',
-            'region'    => 'IAD',
-            'url_type'  => 'publicURL',
-        ],
-
     ],
 
 ];
diff --git a/app/Uploads/AttachmentService.php b/app/Uploads/AttachmentService.php
index e85901e17..b14f49473 100644
--- a/app/Uploads/AttachmentService.php
+++ b/app/Uploads/AttachmentService.php
@@ -2,17 +2,29 @@
 
 use BookStack\Exceptions\FileUploadException;
 use Exception;
+use Illuminate\Contracts\Filesystem\Factory as FileSystem;
+use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
 use Illuminate\Support\Str;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
 
-class AttachmentService extends UploadService
+class AttachmentService
 {
 
+    protected $fileSystem;
+
+    /**
+     * AttachmentService constructor.
+     */
+    public function __construct(FileSystem $fileSystem)
+    {
+        $this->fileSystem = $fileSystem;
+    }
+
+
     /**
      * Get the storage that will be used for storing files.
-     * @return \Illuminate\Contracts\Filesystem\Filesystem
      */
-    protected function getStorage()
+    protected function getStorage(): FileSystemInstance
     {
         $storageType = config('filesystems.attachments');
 
diff --git a/app/Uploads/ImageService.php b/app/Uploads/ImageService.php
index 89744386d..1e5ad8aa1 100644
--- a/app/Uploads/ImageService.php
+++ b/app/Uploads/ImageService.php
@@ -4,16 +4,18 @@ use BookStack\Auth\User;
 use BookStack\Exceptions\HttpFetchException;
 use BookStack\Exceptions\ImageUploadException;
 use DB;
+use ErrorException;
 use Exception;
 use Illuminate\Contracts\Cache\Repository as Cache;
 use Illuminate\Contracts\Filesystem\Factory as FileSystem;
+use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
+use Illuminate\Contracts\Filesystem\FileNotFoundException;
 use Illuminate\Support\Str;
 use Intervention\Image\Exception\NotSupportedException;
 use Intervention\Image\ImageManager;
-use phpDocumentor\Reflection\Types\Integer;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
 
-class ImageService extends UploadService
+class ImageService
 {
 
     protected $imageTool;
@@ -21,30 +23,24 @@ class ImageService extends UploadService
     protected $storageUrl;
     protected $image;
     protected $http;
+    protected $fileSystem;
 
     /**
      * ImageService constructor.
-     * @param Image $image
-     * @param ImageManager $imageTool
-     * @param FileSystem $fileSystem
-     * @param Cache $cache
-     * @param HttpFetcher $http
      */
     public function __construct(Image $image, ImageManager $imageTool, FileSystem $fileSystem, Cache $cache, HttpFetcher $http)
     {
         $this->image = $image;
         $this->imageTool = $imageTool;
+        $this->fileSystem = $fileSystem;
         $this->cache = $cache;
         $this->http = $http;
-        parent::__construct($fileSystem);
     }
 
     /**
      * Get the storage that will be used for storing images.
-     * @param string $type
-     * @return \Illuminate\Contracts\Filesystem\Filesystem
      */
-    protected function getStorage($type = '')
+    protected function getStorage(string $type = ''): FileSystemInstance
     {
         $storageType = config('filesystems.images');
 
@@ -58,12 +54,6 @@ class ImageService extends UploadService
 
     /**
      * Saves a new image from an upload.
-     * @param UploadedFile $uploadedFile
-     * @param string $type
-     * @param int $uploadedTo
-     * @param int|null $resizeWidth
-     * @param int|null $resizeHeight
-     * @param bool $keepRatio
      * @return mixed
      * @throws ImageUploadException
      */
@@ -107,10 +97,10 @@ class ImageService extends UploadService
     /**
      * Gets an image from url and saves it to the database.
      * @param             $url
-     * @param string      $type
+     * @param string $type
      * @param bool|string $imageName
      * @return mixed
-     * @throws \Exception
+     * @throws Exception
      */
     private function saveNewFromUrl($url, $type, $imageName = false)
     {
@@ -118,7 +108,7 @@ class ImageService extends UploadService
         try {
             $imageData = $this->http->fetch($url);
         } catch (HttpFetchException $exception) {
-            throw new \Exception(trans('errors.cannot_get_image_from_url', ['url' => $url]));
+            throw new Exception(trans('errors.cannot_get_image_from_url', ['url' => $url]));
         }
         return $this->saveNew($imageName, $imageData, $type);
     }
@@ -152,10 +142,10 @@ class ImageService extends UploadService
         }
 
         $imageDetails = [
-            'name'       => $imageName,
-            'path'       => $fullPath,
-            'url'        => $this->getPublicUrl($fullPath),
-            'type'       => $type,
+            'name' => $imageName,
+            'path' => $fullPath,
+            'url' => $this->getPublicUrl($fullPath),
+            'type' => $type,
             'uploaded_to' => $uploadedTo
         ];
 
@@ -185,15 +175,13 @@ class ImageService extends UploadService
             $name = Str::random(10);
         }
 
-        return  $name . '.' . $extension;
+        return $name . '.' . $extension;
     }
 
     /**
      * Checks if the image is a gif. Returns true if it is, else false.
-     * @param Image $image
-     * @return boolean
      */
-    protected function isGif(Image $image)
+    protected function isGif(Image $image): bool
     {
         return strtolower(pathinfo($image->path, PATHINFO_EXTENSION)) === 'gif';
     }
@@ -253,7 +241,7 @@ class ImageService extends UploadService
         try {
             $thumb = $this->imageTool->make($imageData);
         } catch (Exception $e) {
-            if ($e instanceof \ErrorException || $e instanceof NotSupportedException) {
+            if ($e instanceof ErrorException || $e instanceof NotSupportedException) {
                 throw new ImageUploadException(trans('errors.cannot_create_thumbs'));
             }
             throw $e;
@@ -281,11 +269,9 @@ class ImageService extends UploadService
 
     /**
      * Get the raw data content from an image.
-     * @param Image $image
-     * @return string
-     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
+     * @throws FileNotFoundException
      */
-    public function getImageData(Image $image)
+    public function getImageData(Image $image): string
     {
         $imagePath = $image->path;
         $storage = $this->getStorage();
@@ -294,7 +280,6 @@ class ImageService extends UploadService
 
     /**
      * Destroy an image along with its revisions, thumbnails and remaining folders.
-     * @param Image $image
      * @throws Exception
      */
     public function destroy(Image $image)
@@ -324,7 +309,7 @@ class ImageService extends UploadService
         // Cleanup of empty folders
         $foldersInvolved = array_merge([$imageFolder], $storage->directories($imageFolder));
         foreach ($foldersInvolved as $directory) {
-            if ($this->isFolderEmpty($directory)) {
+            if ($this->isFolderEmpty($storage, $directory)) {
                 $storage->deleteDirectory($directory);
             }
         }
@@ -332,14 +317,21 @@ class ImageService extends UploadService
         return true;
     }
 
+    /**
+     * Check whether or not a folder is empty.
+     */
+    protected function isFolderEmpty(FileSystemInstance $storage, string $path): bool
+    {
+        $files = $storage->files($path);
+        $folders = $storage->directories($path);
+        return (count($files) === 0 && count($folders) === 0);
+    }
+
     /**
      * Save an avatar image from an external service.
-     * @param \BookStack\Auth\User $user
-     * @param int $size
-     * @return Image
      * @throws Exception
      */
-    public function saveUserAvatar(User $user, $size = 500)
+    public function saveUserAvatar(User $user, int $size = 500): Image
     {
         $avatarUrl = $this->getAvatarUrl();
         $email = strtolower(trim($user->email));
@@ -363,9 +355,8 @@ class ImageService extends UploadService
 
     /**
      * Check if fetching external avatars is enabled.
-     * @return bool
      */
-    public function avatarFetchEnabled()
+    public function avatarFetchEnabled(): bool
     {
         $fetchUrl = $this->getAvatarUrl();
         return is_string($fetchUrl) && strpos($fetchUrl, 'http') === 0;
@@ -407,11 +398,11 @@ class ImageService extends UploadService
                 foreach ($images as $image) {
                     $searchQuery = '%' . basename($image->path) . '%';
                     $inPage = DB::table('pages')
-                         ->where('html', 'like', $searchQuery)->count() > 0;
+                            ->where('html', 'like', $searchQuery)->count() > 0;
                     $inRevision = false;
                     if ($checkRevisions) {
-                        $inRevision =  DB::table('page_revisions')
-                             ->where('html', 'like', $searchQuery)->count() > 0;
+                        $inRevision = DB::table('page_revisions')
+                                ->where('html', 'like', $searchQuery)->count() > 0;
                     }
 
                     if (!$inPage && !$inRevision) {
@@ -427,38 +418,25 @@ class ImageService extends UploadService
 
     /**
      * Convert a image URI to a Base64 encoded string.
-     * Attempts to find locally via set storage method first.
-     * @param string $uri
-     * @return null|string
-     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
+     * Attempts to convert the URL to a system storage url then
+     * fetch the data from the disk or storage location.
+     * Returns null if the image data cannot be fetched from storage.
+     * @throws FileNotFoundException
      */
-    public function imageUriToBase64(string $uri)
+    public function imageUriToBase64(string $uri): ?string
     {
-        $isLocal = strpos(trim($uri), 'http') !== 0;
-
-        // Attempt to find local files even if url not absolute
-        $base = url('/');
-        if (!$isLocal && strpos($uri, $base) === 0) {
-            $isLocal = true;
-            $uri = str_replace($base, '', $uri);
+        $storagePath = $this->imageUrlToStoragePath($uri);
+        if (empty($uri) || is_null($storagePath)) {
+            return null;
         }
 
+        $storage = $this->getStorage();
         $imageData = null;
-
-        if ($isLocal) {
-            $uri = trim($uri, '/');
-            $storage = $this->getStorage();
-            if ($storage->exists($uri)) {
-                $imageData = $storage->get($uri);
-            }
-        } else {
-            try {
-                $imageData = $this->http->fetch($uri);
-            } catch (\Exception $e) {
-            }
+        if ($storage->exists($storagePath)) {
+            $imageData = $storage->get($storagePath);
         }
 
-        if ($imageData === null) {
+        if (is_null($imageData)) {
             return null;
         }
 
@@ -471,11 +449,44 @@ class ImageService extends UploadService
     }
 
     /**
-     * Gets a public facing url for an image by checking relevant environment variables.
-     * @param string $filePath
-     * @return string
+     * Get a storage path for the given image URL.
+     * Ensures the path will start with "uploads/images".
+     * Returns null if the url cannot be resolved to a local URL.
      */
-    private function getPublicUrl($filePath)
+    private function imageUrlToStoragePath(string $url): ?string
+    {
+        $url = ltrim(trim($url), '/');
+
+        // Handle potential relative paths
+        $isRelative = strpos($url, 'http') !== 0;
+        if ($isRelative) {
+            if (strpos(strtolower($url), 'uploads/images') === 0) {
+                return trim($url, '/');
+            }
+            return null;
+        }
+
+        // Handle local images based on paths on the same domain
+        $potentialHostPaths = [
+            url('uploads/images/'),
+            $this->getPublicUrl('/uploads/images/'),
+        ];
+
+        foreach ($potentialHostPaths as $potentialBasePath) {
+            $potentialBasePath = strtolower($potentialBasePath);
+            if (strpos(strtolower($url), $potentialBasePath) === 0) {
+                return 'uploads/images/' . trim(substr($url, strlen($potentialBasePath)), '/');
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Gets a public facing url for an image by checking relevant environment variables.
+     * If s3-style store is in use it will default to guessing a public bucket URL.
+     */
+    private function getPublicUrl(string $filePath): string
     {
         if ($this->storageUrl === null) {
             $storageUrl = config('filesystems.url');
diff --git a/app/Uploads/UploadService.php b/app/Uploads/UploadService.php
deleted file mode 100644
index 292e61e30..000000000
--- a/app/Uploads/UploadService.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php namespace BookStack\Uploads;
-
-use Illuminate\Contracts\Filesystem\Factory as FileSystem;
-use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
-
-abstract class UploadService
-{
-
-    /**
-     * @var FileSystem
-     */
-    protected $fileSystem;
-
-
-    /**
-     * FileService constructor.
-     * @param $fileSystem
-     */
-    public function __construct(FileSystem $fileSystem)
-    {
-        $this->fileSystem = $fileSystem;
-    }
-
-    /**
-     * Get the storage that will be used for storing images.
-     * @return FileSystemInstance
-     */
-    protected function getStorage()
-    {
-        $storageType = config('filesystems.default');
-        return $this->fileSystem->disk($storageType);
-    }
-
-    /**
-     * Check whether or not a folder is empty.
-     * @param $path
-     * @return bool
-     */
-    protected function isFolderEmpty($path)
-    {
-        $files = $this->getStorage()->files($path);
-        $folders = $this->getStorage()->directories($path);
-        return (count($files) === 0 && count($folders) === 0);
-    }
-}
diff --git a/tests/Entity/ExportTest.php b/tests/Entity/ExportTest.php
index e022f92f5..7c56a7268 100644
--- a/tests/Entity/ExportTest.php
+++ b/tests/Entity/ExportTest.php
@@ -3,7 +3,7 @@
 
 use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Models\Page;
-use BookStack\Uploads\HttpFetcher;
+use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Str;
 use Tests\TestCase;
 
@@ -154,14 +154,39 @@ class ExportTest extends TestCase
     public function test_page_export_sets_right_data_type_for_svg_embeds()
     {
         $page = Page::first();
-        $page->html = '<img src="http://example.com/image.svg">';
+        Storage::disk('local')->makeDirectory('uploads/images/gallery');
+        Storage::disk('local')->put('uploads/images/gallery/svg_test.svg', '<svg></svg>');
+        $page->html = '<img src="http://localhost/uploads/images/gallery/svg_test.svg">';
         $page->save();
 
         $this->asEditor();
-        $this->mockHttpFetch('<svg></svg>');
         $resp = $this->get($page->getUrl('/export/html'));
+        Storage::disk('local')->delete('uploads/images/gallery/svg_test.svg');
+
         $resp->assertStatus(200);
         $resp->assertSee('<img src="data:image/svg+xml;base64');
     }
 
-}
\ No newline at end of file
+    public function test_page_export_contained_html_image_fetches_only_run_when_url_points_to_image_upload_folder()
+    {
+        $page = Page::first();
+        $page->html = '<img src="http://localhost/uploads/images/gallery/svg_test.svg"/>'
+            ."\n".'<img src="http://localhost/uploads/svg_test.svg"/>'
+            ."\n".'<img src="/uploads/svg_test.svg"/>';
+        $storageDisk = Storage::disk('local');
+        $storageDisk->makeDirectory('uploads/images/gallery');
+        $storageDisk->put('uploads/images/gallery/svg_test.svg', '<svg>good</svg>');
+        $storageDisk->put('uploads/svg_test.svg', '<svg>bad</svg>');
+        $page->save();
+
+        $resp = $this->asEditor()->get($page->getUrl('/export/html'));
+
+        $storageDisk->delete('uploads/images/gallery/svg_test.svg');
+        $storageDisk->delete('uploads/svg_test.svg');
+
+        $resp->assertDontSee('http://localhost/uploads/images/gallery/svg_test.svg');
+        $resp->assertSee('http://localhost/uploads/svg_test.svg');
+        $resp->assertSee('src="/uploads/svg_test.svg"');
+    }
+
+}