Delete some files from web library but not from desktop
dstillman
Zotero Team
This discussion was created from comments split from: If I delete the articles on my computer, will zotero still work ?.
Upgrade Storage
The point of Zotero syncing is to make your library available everywhere. You can configure it not to download files onto every device, but everything will always be available in the online library.
The main exception is that if you leave or delete a group, Zotero will ask you whether to keep an archived copy of the group locally (which will never be syncable again). But that's more of a special case, not something to rely on for normal usage.