Mass delete note attachements

[MrKanister]

Maybe this script could help you?

Scripts to remove orphaned resources

Please note that these scripts will become obsolete in the future, when the resource bugs are fixed! A word of caution: I use the scripts myself and haven’t experienced any issues. However, use them at your own risk! It’s always a good idea to create a backup first. There’s also the --dry-run or -n option to see what happens without actually doing anything. Use at your own risk! Why are there 2 scripts to remove resources? The first script jnrmor removes orphaned resources from the database a…

Another way would be to clear the server database and reupload everything cleanly. Do you have only one syncing user account on your server?