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PhotoPrism vs PiGallery2: catalog facts
PhotoPrism	PiGallery2
Freemium Free and open source under the AGPL 3.0. Sponsored membership unlocks some extra features…	Free Free to download and run.
Self-hosted, Web	Web, Self-hosted
Automatic labelling and face recognition running on your own machine Powerful combined search across labels, place, colour and quality	Follows your existing folder layout Runs well on a Raspberry Pi
Indexing and face recognition are demanding; a Raspberry Pi will struggle Docker is the supported install route, which is a barrier for some	Gallery rather than a full photo backup solution Needs a server to run
Self-hosted, Web application	Self-hosted
Open source	Closed source
License: AGPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.