diff --git a/Source/AzwConverter/AzwConverter.cs b/Source/AzwConverter/AzwConverter.cs
index 031c7c3..700695d 100644
--- a/Source/AzwConverter/AzwConverter.cs
+++ b/Source/AzwConverter/AzwConverter.cs
@@ -77,8 +77,17 @@ public async Task ConvertOrScanAsync()
             var syncer = new TitleSyncer();
 
             // Number of books is stable after title syncing.
-            var added = await syncer.SyncBooksToTitlesAsync(books, titles, archive);
-            Console.WriteLine($"Added {added} missing title{added.SIf1()}");
+            var (added, skipped) = await syncer.SyncBooksToTitlesAsync(books, titles, archive);
+
+            Console.Write($"Added {added} missing title{added.SIf1()}");
+            if (!Settings.ConvertAllBookTypes)
+            {
+                Console.WriteLine($" (skipped {skipped})");
+            }
+            else
+            {
+                Console.WriteLine();
+            }
 
             var archived = syncer.SyncAndArchiveTitles(titles, convertedTitles, archive, books);
             Console.WriteLine($"Archived {archived} title{archived.SIf1()}");
diff --git a/Source/AzwConverter/AzwSettings.json b/Source/AzwConverter/AzwSettings.json
index b60d069..1a73293 100644
--- a/Source/AzwConverter/AzwSettings.json
+++ b/Source/AzwConverter/AzwSettings.json
@@ -34,6 +34,11 @@
   // Note: SaveCover must also be true for SaveCoverOnly to work. 
   "SaveCoverOnly": false,
 
+  // Normally CbzMage only scans and converts books where the BookType is "comic".
+  // If you run into books that are ignored and you're sure they're comics try
+  // changing ConvertAllBookTypes to true.
+  "ConvertAllBookTypes": false,
+
   // The converted titles directory is a subdirectory of TitlesDir. The default
   // name is "Converted Titles", you can change it to something else below. Don't
   // forget to rename the actual directory if you do.
diff --git a/Source/AzwConverter/Settings.cs b/Source/AzwConverter/Settings.cs
index df6e7df..11c602f 100644
--- a/Source/AzwConverter/Settings.cs
+++ b/Source/AzwConverter/Settings.cs
@@ -25,6 +25,8 @@ public static void SetConvertedTitlesDir(string dir)
 
         public static string CbzDir { get; set; }
 
+        public static bool ConvertAllBookTypes { get; set; }
+
         public static bool SaveCover { get; set; }
         public static bool SaveCoverOnly { get; set; }
         public static string? SaveCoverDir { get; set; }
diff --git a/Source/AzwConverter/TitleSyncer.cs b/Source/AzwConverter/TitleSyncer.cs
index 6b7abf6..9f71d37 100644
--- a/Source/AzwConverter/TitleSyncer.cs
+++ b/Source/AzwConverter/TitleSyncer.cs
@@ -1,4 +1,5 @@
 using AzwConverter.Engine;
+using CbzMage.Shared.Extensions;
 using MobiMetadata;
 using System.Collections.Concurrent;
 
@@ -6,11 +7,13 @@ namespace AzwConverter
 {
     public class TitleSyncer
     {
-        public async Task<int> SyncBooksToTitlesAsync(IDictionary<string, FileInfo[]> books, 
-            IDictionary<string, FileInfo> titles, ArchiveDb archive)
+        public async Task<(int skippedBooks, int ignoredBooks)> SyncBooksToTitlesAsync(
+            IDictionary<string, FileInfo[]> books, IDictionary<string, FileInfo> titles, ArchiveDb archive)
         {
             var booksWithErrors = new ConcurrentBag<string>();
-            var newOrArchivedTitles = new ConcurrentDictionary<string, FileInfo>();
+            var skippedBooks = new ConcurrentBag<string>();
+
+            var addedTitles = new ConcurrentDictionary<string, FileInfo>();
 
             await Parallel.ForEachAsync(books, Settings.ParallelOptions, async (book, ct) =>
             {
@@ -36,6 +39,12 @@ await Parallel.ForEachAsync(books, Settings.ParallelOptions, async (book, ct) =>
                             var engine = new MetadataEngine();
                             (metadata, disposables) = await engine.ReadMetadataAsync(bookFiles);
 
+                            if (!metadata.MobiHeader.ExthHeader.BookType.EqualsIgnoreCase("comic"))
+                            {
+                                skippedBooks.Add(bookId);
+                                return;
+                            }
+
                             MetadataManager.CacheMetadata(bookId, metadata, disposables);
                         }
                         catch (MobiMetadataException)
@@ -63,7 +72,7 @@ async Task SyncAsync(string titleFile)
                         await File.WriteAllTextAsync(file, bookId, CancellationToken.None);
 
                         // Add archived/scanned title to list of current titles
-                        newOrArchivedTitles[bookId] = new FileInfo(file);
+                        addedTitles[bookId] = new FileInfo(file);
                     }
                 }
             });
@@ -73,12 +82,17 @@ async Task SyncAsync(string titleFile)
                 books.Remove(bookId);
             }
 
-            foreach (var title in newOrArchivedTitles)
+            foreach (var bookId in skippedBooks)
+            { 
+                books.Remove(bookId);
+            }
+
+            foreach (var title in addedTitles)
             {
-                titles.Add(title);                
+                titles.Add(title);
             }
 
-            return newOrArchivedTitles.Count;
+            return (skippedBooks: addedTitles.Count, ignoredBooks: skippedBooks.Count);
         }
 
         private static string TrimPublisher(string publisher)
@@ -95,7 +109,7 @@ private static string TrimPublisher(string publisher)
             return publisher;
         }
 
-        public int SyncAndArchiveTitles(IDictionary<string, FileInfo> titles, 
+        public int SyncAndArchiveTitles(IDictionary<string, FileInfo> titles,
             IDictionary<string, FileInfo> convertedTitles,
             ArchiveDb archive, IDictionary<string, FileInfo[]> books)
         {
@@ -118,7 +132,7 @@ public int SyncAndArchiveTitles(IDictionary<string, FileInfo> titles,
                 // Sync title -> converted title
                 if (convertedTitles.TryGetValue(bookId, out var convertedTitleFile)
                     && convertedTitleFile.Name != titleFile.Name)
-                { 
+                {
                     var newConvertedTitleFile = Path.Combine(convertedTitleFile.DirectoryName!, titleFile.Name);
                     convertedTitleFile.MoveTo(newConvertedTitleFile);
                 }