MangaDex Sync

Export and import your MangaDex library to/from MyAnimeList and AniList — with scores, statuses, and optional chapter progress — all from a single clean app.

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Features

• Single app — Export, Import, and Convert in one place, no switching between scripts
• Import — Restore your library from a MangaDex JSON backup or a MAL/AniList XML file
• Fast mode — Exports titles + status in minutes (recommended)
• Deep mode — Also fetches your last read chapter per manga (slower)
• MAL XML — Ready to import at myanimelist.net/import.php (includes .gz)
• AniList XML — Same format, ready to import at AniList
• JSON backup — Full local backup of your library data
• Scores — Fetches your MangaDex ratings and carries them over
• Resume — Saves a checkpoint so it can pick up if interrupted
• Skipped list — Shows exactly which manga had no MAL ID
• Export history — Logs every export with timestamp and file list
• Dry run mode — Simulate without writing any files
• Native window — Opens as a desktop app via pywebview (or falls back to browser)

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Requirements

• Python 3.10 or newer
• A MangaDex account
• A MangaDex API Personal Client (free to create)

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Installation

pip install mangadex-sync

Everything including the native desktop window is included — no extra steps needed.

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Usage

mangadex-sync

This opens a native desktop window. You can also open http://localhost:7337 in any browser — useful for accessing it from another device on the same network.

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Step-by-step Guide

1. Get your MangaDex API credentials

1. Go to mangadex.org/settings
2. Scroll to API Clients → click Create
3. Give it any name, set type to Personal
4. Copy your Client ID and Client Secret

2. Export your library

1. Open the app and go to the Export tab
2. Fill in:
   • Client ID and Client Secret (from step 1)
   • Username and Password (your MangaDex login)
   • Save folder — where to save the output files
3. Choose Fast or Deep mode (Fast is recommended)
4. Click Extract entire library (or press Ctrl+Enter)

MAL User ID and MAL Username are optional. You do not need to fill them in to generate a working XML file. MAL identifies you by your login session when you upload — the ID and username fields in the XML header are just metadata and are ignored during import. Leave them blank if you don't know them.

3. Convert to XML

After export finishes, the Convert tab auto-fills with your exported files. Just:

1. Click Generate import files
2. Files are saved to your chosen folder

4. Import to MAL / AniList

• MAL: Go to myanimelist.net/import.php and upload the mal_*.xml file
• AniList: Go to anilist.co/settings/import and upload the anilist_*.xml file

5. Import back to MangaDex

Use the Import tab to restore your library from:

• A mdex_*.json backup file (exported by this app)
• A MAL XML file (mal_*.xml)
• An AniList XML file (anilist_*.xml)

1. Browse or paste the path to your file
2. Optionally enable Import Scores to restore your ratings
3. Click Start import

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Fast vs Deep Mode

	Fast	Deep
Speed	⚡ Minutes	🐢 15–60+ min
Titles & status	✓	✓
Ratings/scores	✓	✓
Last read chapter	✗	✓
Recommended	✓	Only if you need progress

Deep mode fetches every individual chapter you've ever read to find your last one per manga. This can mean 5,000–10,000+ API calls for a large library, which is why Fast mode exists.

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Output Files

For each status group (reading, completed, etc.) the app creates:

File	Description
mdex_{status}_{timestamp}.xlsx	Raw export data — used by Convert tab
mdex_{status}_{timestamp}.json	Full JSON backup — used by Import tab
mal_{status}_{timestamp}.xml	MAL import file
mal_{status}_{timestamp}.xml.gz	Compressed version (also accepted by MAL)
anilist_{status}_{timestamp}.xml	AniList import file

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Resume

If the export is interrupted (crash, network error, you stopped it), the app saves a checkpoint after each completed status group. Click Resume on the Export tab to continue from where it left off.

To start fresh, go to Settings → Resume checkpoint → Clear checkpoint.

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Troubleshooting

"Authentication failed"

• Double-check your Client ID, Client Secret, username, and password
• Make sure your API client is set to Personal type and is approved on MangaDex
• Click Verify credentials first: it checks your login against MangaDex and shows how long the token is valid

"Failed to set status" during import

• Make sure your API client exists and is approved at mangadex.org/settings
• Check that your credentials are correct

Native window doesn't open

• The app will fall back to your browser automatically with instructions on how to fix it
• On Linux you may need to install a GTK system package — the app will tell you the exact command for your distro

Manga missing from MAL after import

• Those titles are listed in the Skipped panel (with a one-click MAL search for each) — they have no MAL ID on MangaDex
• Add them manually on MAL

Slow export speed

• The API enforces rate limits — the app already waits the minimum required between requests
• Deep mode is inherently slow for large libraries — use Fast mode if chapter progress isn't critical

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Dependencies

Package	Purpose
flask	Local web server
requests	MangaDex API calls
pandas	Excel file read/write
openpyxl	Excel engine for pandas
pywebview	Native desktop window
PyQt6 + PyQt6-WebEngine	Qt backend for pywebview
qtpy	Qt abstraction layer

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Credits

Based on the original export scripts by Seriousattempts. Rewritten and extended with a web UI, Fast/Deep mode, import support, resume, score export, and AniList output.