Data Locations

Picturesque keeps three kinds of data (Data):

Data	Where	Safe to delete?
Photos and sidecars	The library folder you chose (library_root)	No: these are your imported photos.
Catalog (catalog.sqlite)	Application data folder (below)	No: it holds metadata, decisions and import history.
AI models (models/)	Application data folder (below)	Yes, but they must be downloaded again (Local AI).
Thumbnails and previews	Application cache folder (below), in v1/grid (512 px), v1/preview (2048 px) and v1/full (photos zoomed to 100%)	Yes: they are recreated when needed.

Platform	Data folder	Cache folder
Linux	~/.local/share/io.github.denyszorinets.picturesque/	~/.cache/io.github.denyszorinets.picturesque/
macOS	~/Library/Application Support/io.github.denyszorinets.picturesque/	~/Library/Caches/io.github.denyszorinets.picturesque/
Windows	%APPDATA%\io.github.denyszorinets.picturesque\	%LOCALAPPDATA%\io.github.denyszorinets.picturesque\

The development server keeps both under target/devserver-data/ (cache/ inside it), or under PICTURESQUE_DATA_DIR.

Thumbnails

Thumbnails are JPEGs named after the content hash of the file they are made from, so they never go out of date. They are generated in the background after every import and when the app starts, and on demand for anything still missing. RAW files use the preview the camera embedded, which is fast; a RAW without one is fully decoded, which takes longer. Thumbnails are always upright: the photo’s EXIF orientation is applied.