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PiGallery2 vs Immich: catalog facts
PiGallery2	Immich
Free Free to download and run.	Free Free to use with every feature; the project states nothing will be put behind a paywall…
Web, Self-hosted	Self-hosted, Web, Android, iOS
Follows your existing folder layout Runs well on a Raspberry Pi	Automatic background backup from Android and iOS with selective album backup, album sync and Free Up Space to… Search by metadata, objects, faces and CLIP; facial recognition and clustering; reverse geocoding and a global map
Gallery rather than a full photo backup solution Needs a server to run	Server needs Docker with at least 6 GB RAM and 2 CPU cores (8 GB and 4 cores… The Postgres database must not sit on NTFS, exFAT or a network share and should use local SSD
Self-hosted	Self-hosted, Web application, Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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