FolioSort vs PhotoPrism (2026): Desktop App or Self-Hosted?

Of the two, FolioSort is the one that reorganizes an existing library on disk, removes similar duplicates and writes Takeout metadata back into the photos, on a Mac or PC with nothing to host. PhotoPrism is the one that puts the library on your phone and in any browser, for several users, from a server you control.

Disclosure: FolioSort is made by an independent developer, Tiago Trindade, who also wrote this page. That is why every PhotoPrism claim below is limited to what PhotoPrism itself publishes on its website and in its documentation.

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PhotoPrism is a server. You install it — PhotoPrism recommends Docker Compose — on a machine that stays on: a NAS, a home server, a Raspberry Pi, or a hosted instance. It indexes a folder of originals into a database, builds thumbnails in its storage folder, and serves the library to a web browser. That is what makes it reachable from a phone, a tablet or another computer, and what lets several people share it with their own accounts.

That reach has a cost in administration. Someone has to keep the server running, update it, back up its database as well as the photos, and decide whether and how it is reachable from outside the home network. PhotoPrism documents all of this well, but it is a job. On a Windows PC or a Mac, PhotoPrism runs inside Docker Desktop rather than as a regular app.

FolioSort is a desktop app. You install it like any other program, point it at a folder or a drive, and it works there — on internal drives, external drives and SMB shares on a Synology, QNAP or TrueNAS. The Library shows everything as a timeline, a map, people and events across every drive you add, without importing anything. There is no server to keep running and nothing to expose to a network. The trade is just as clear: FolioSort has no phone app and no web interface, and nobody else can open your library through it.

This is the difference people most often miss. PhotoPrism is built to leave your originals alone. Its documentation says it generally does not write to the originals folder, apart from a short list of cases such as rotating an image, unstacking files, importing or uploading, deleting from the interface, or managing files over WebDAV — and the originals folder can be mounted read-only. Titles, dates and locations you edit are kept in its database and written to YAML sidecar files in its storage folder, which also serve as a backup if the database is lost.

The same principle applies to folders. PhotoPrism indexes your originals where they are, and its docs say most people with an existing library should do exactly that, leaving file and folder names unchanged. Its optional import feature gives new files a canonical name in year and month folders, but it does not rearrange what is already there. Asked whether it can sort files into a configurable folder structure, PhotoPrism's FAQ recommends external tools.

That is FolioSort's core job. It sorts any existing folder by the EXIF capture date (not the file date, which copying rewrites) into a template you choose, shows the new folder tree before anything moves, copies by default with checksum verification, and keeps undo for the last 50 runs. It removes exact and visually similar duplicates — resized, re-compressed or lightly edited copies — where PhotoPrism skips exact duplicates when indexing and lists browsing and deleting them as planned. When you ask it to, FolioSort writes capture dates, place names and AI keywords into standard EXIF, IPTC and XMP fields, with a sidecar for RAW files, so the work is in the files and stays there whatever app opens them next.

Both read the JSON files that come with a Google Takeout export. PhotoPrism reads them when it indexes, so the dates and places Google kept can appear inside PhotoPrism. Since PhotoPrism generally does not write to originals, the photos themselves are left as they were.

FolioSort's Google Takeout repair matches every photo to its JSON file and writes the capture date and GPS back into the photo, together with favourites (as a 5-star rating), the people tagged in Google Photos (as XMP keywords) and captions. It is free on every tier with no file limit, and it runs offline in a normal window on Mac and Windows. With Pro, the same app then sorts the export into dated folders and removes the copies Takeout makes for every album.

If PhotoPrism is where the library will end up, the two steps fit together: repair and sort the export in FolioSort first, and PhotoPrism indexes photos whose dates are already correct inside the files.

Choose PhotoPrism, not FolioSort, when any of these is the real requirement:

• You want the library on your phone. PhotoPrism works in any mobile browser and as a Progressive Web App, and PhotoSync can back up iOS and Android phones to it in the background. FolioSort has no phone app and no web interface.
• Several people need to see it. PhotoPrism has user accounts with roles and shareable album links. FolioSort is one person at one computer.
• You run Linux or a NAS, and no Mac or Windows PC. PhotoPrism runs on Linux, FreeBSD, Raspberry Pi and many NAS devices. FolioSort is macOS and Windows only.
• You want the files left exactly as they are. PhotoPrism can index a read-only originals folder and keep every edit in its database and sidecars. FolioSort's purpose is to change the folders and files, carefully and undoably, but change them.
• You want free and open source. PhotoPrism Community is free under the AGPL. FolioSort has a free plan with limits and is paid once to remove them.

If none of those applies — one computer, no need for phone access — a server is a machine to look after in exchange for features you will not use, and FolioSort does the library work on the computer you already have. Our photo manager guide for Windows walks through that question with other options, Immich among them.

1. Gather the sources. Takeout exports, old drives, phone dumps. Download FolioSort for Mac or Windows and repair any Takeout export first — that part is free.
2. Clean and sort. Merge the sources into one library, remove exact and similar duplicates, blurry shots and screenshots, and sort everything into folders such as {YYYY}/{MM} by real capture date. FolioSort can write straight to an SMB share on a Synology, QNAP or TrueNAS.
3. Point PhotoPrism at the result. Use that folder as PhotoPrism's originals folder and let it index. Finish reorganizing before it indexes, so its index starts from the final layout instead of files that just moved.
4. Browse anywhere. Open PhotoPrism on your phone or in any browser. On your Mac or PC, keep using FolioSort for the jobs PhotoPrism leaves to other tools: re-sorting, duplicate cleanup, and writing dates, places and keywords into the files.

The metadata meets in the files. Dates, places and keywords FolioSort writes go into standard EXIF, IPTC and XMP fields; PhotoPrism's documentation says it indexes embedded XMP through ExifTool and reads keywords from standalone .xmp sidecar files.