Syncing Issue Happening again

🙋 Support
1

I never had an issue with syncing to ankiweb before, but now with the recent update to AnkiHub I am getting the message “Collection too large to sync” after vast amount of googling, and doing everything I can to fix the issue I have not been able to find a solution.

I had checked database, checked media, and emptied cards, still no solution. I have even exported all cards and synced and reuploaded them and no solution. I do not know what more to do. This issue only became apparent upon the most recent Ankihub update. The only other potential update that could’ve caused this problem is the recent update in Anking Note Type Add-on.

I am running MacOS 15.4.1. I am also utilizing Anki version 25.05 Beta 2. I have downgraded to 25.02.04 and 25.02 to see if there was a solution, which there was not.

I apologize if I come across frustrated, (because I am to be honest lol). But if there is any guidance for solving this issue, I would be all open!

2

I understand your frustration with syncing issues after the recent AnkiHub update. Let me search for some relevant information that might help solve this problem.

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Found 1 result for 'tags:official collection too large to sync ankihub status:public'

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Found 3 results for 'tags:official sync too large collection status:public'

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Found 1 result for 'tags:official collection too large sync error status:public'

I’m sorry to hear you’re experiencing syncing issues with your Anki collection after updating AnkiHub. The “Collection too large to sync” error is typically related to Anki’s core syncing functionality with AnkiWeb rather than being specific to AnkiHub, but let’s try to troubleshoot this issue.

Possible Solutions

Since this appears to be an AnkiWeb syncing issue rather than strictly an AnkiHub issue, here are some steps you can try:

1. Check your collection size

AnkiWeb has a 250MB collection size limit. Your collection might have grown beyond this limit, possibly due to:

  • Large media files
  • Accumulated review history
  • Large note types with embedded resources

2. Try these specific solutions:

  • Check media database again: Run Tools > Check Media and delete any unused media
  • Reduce collection size:
    • Remove unnecessary note history (Tools > Preferences > Backups > reduce number of backups)
    • Consider optimizing any images in your cards
    • Remove any unused note types or card templates

3. Force a one-way sync:

  1. Go to Tools > Preferences > Network
  2. Check “On next sync, force changes in one direction”
  3. Try syncing again and choose “Upload” when prompted

4. Backup and restore approach:

  1. Create a complete backup with File > Export (All decks, include scheduling and media)
  2. Sync with AnkiWeb (choose Download) to get a fresh collection
  3. Import your decks one by one, which may help identify if a specific deck is causing issues

5. Troubleshoot add-on conflicts:

  • Hold Shift while starting Anki to disable all add-ons
  • If syncing works, re-enable add-ons one by one to identify the problematic one

Since you mentioned this occurred after a recent AnkiHub update, there might be some interaction between AnkiHub and your collection that’s affecting the sync process. If the above solutions don’t work, please consider posting in the AnkiHub AI Q&A Chatbot for more personalized assistance.

Let me know if any of these solutions help or if you need further guidance!

3

Hello,

I would be happy to help. :slight_smile:

Unfortunately, since this is an error with AnkiWeb, rather than AnkiHub, you’ll likely want/need to reach out on the official Anki forums: https://forums.ankiweb.net/

There are a few reasons why this error can occur, and it’s generally not related to AnkiHub, but because the issue is on their server side there isn’t much that I can do to help over here I’m sorry to say.

If you do figure out what it is, though, please let me know so I can be better aware of how best to guide anyone who might experience this issue in the future to be of help in similar cases should they arise. :mending_heart:

2 Likes
4

Hello, after spending almost all day searching. I finally was able to find a solution, with the help of chagpt too. But I was able to delete reviews from 5 years ago and that was the issue all along. I apparently just hit the stored review history limit recently.