Feature Request: Extension icon indicates when an item has already been saved

Calorion · April 12, 2026

There should be an easy way to know when the page or article I’m currently viewing is already in my Zotero Collection. This would be *extremely* helpful.

cedricrossi · 2026-08-17T16:40:52+00:00

Seconded! I’m doing a literature review at the moment, and obviously I keep circling on the same references, and keep importing the same ones… The Duplicate search in Zotero is a god send, but still, I’m re-reading the abstracts to check if the source is pertinent, find them somehow familiar, check in Zotero if I have already imported them, etc.

Something like that would be perfect:
https://help.raindrop.io/install-extension#enabling-saved-page-indicator

The algorithm description is interesting too:
https://help.raindrop.io/duplicates#how-detection-works

Calorion · 2026-08-17T17:50:03+00:00

There’s a couple of solutions people have created for this—not as good as being baked into the official extension, but better than nothing.

For Firefox: https://addons.mozilla.org/en-US/firefox/addon/library-check-for-zotero/

For Safari (you’ve got to build it with Xcode): https://github.com/christianbrodbeck/ZoteroCheck

cedricrossi · 2026-08-17T18:26:25+00:00

Oh that’s wonderful, thank you!