@@ -27,6 +27,7 @@ public class BookStorageService : IBookStorageService
         var uploadsFolder = Path.Combine(_environment.WebRootPath, "uploads");
         EnsureDirectoryExists(uploadsFolder);
 
+        fileName = SanitizeFileName(fileName);

@@ -21,3 +21,3 @@
-    private static readonly Regex ImageTagRegex = new(@"<img\b(?<before>[^>]*?\bsrc=[""'])(?<src>[^""']*?)(?<after>[""'][^>]*?>)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
+    private static readonly Regex ImageTagRegex = new(@"(?<before><img\b[^>]*?\bsrc=[""'])(?<src>[^""']*?)(?<after>[""'][^>]*?>)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
     private static readonly Regex BodyMatchRegex = new(@"<body\b[^>]*>(.*?)</body>", RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Compiled);
     private static readonly Regex ParagraphMatchRegex = new(@"<(p|h[1-6]|ul|ol|blockquote|pre)\b[^>]*>.*?</\1>|<hr\b[^>]*>|<img\b[^>]*>", RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Compiled);

@@ -30,3 +32,4 @@
+    private static readonly Regex EmptyBlockRegex = new(@"^(</?(p|h[1-6]|ul|ol|li|blockquote|pre|div|span|br)\b[^>]*>|&nbsp;|\s)*$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
     public EpubReaderService(
         IDbContextFactory<AppDbContext> dbContextFactory,

@@ -8,7 +8,7 @@
 @inject IReaderStateService StateService

@@ -62,5 +62,5 @@
                 </div>
             }
         </div>
 
         @if (_isLoadingChapter)

@@ -34,5 +34,5 @@
     }
 
     public MobileReaderTab ActiveTab
     {
         get { lock (_lock) return _activeTab; }

@@ -44,6 +45,17 @@ export function initScrollListener(dotNetHelper, scrollContainerSelector) {
             // Ensure bounds

@@ -121,6 +122,17 @@ builder.Services.AddAuthentication(options =>
         options.DefaultScheme = IdentityConstants.ApplicationScheme;