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What you can do with Rembrandt

Rembrandt is a free, open-source photo editor for macOS, Windows and Linux that develops RAW files, manages a photo library and runs AI features on your own computer.

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thesnarkitecht/rembrandt on GitHub

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What do you want to do?

5 use cases

  • Self-host a photo editor for your home network

    Serve your photo folder from one computer and edit it in any browser on your network.

    View prompt
    Using the repo thesnarkitecht/rembrandt, run the self-host install on <target-computer> with the --server option and report the private link it prints. Verify that the photo folder you chose still contains only its original photos and that any edit creates an XMP file beside the photo.

  • Edit RAW photos in a free desktop app

    Install a free RAW editor with masks and AI tools and skip the subscription.

    View prompt
    Using the repo thesnarkitecht/rembrandt, download the installer for <platform> from the project's Releases page and confirm the file's SHA-256 matches the published checksum. Report the file name and whether the checksum matched.

  • Move a Lightroom Classic catalog into Rembrandt

    Bring edits, keywords and collections from Lightroom Classic into a free editor.

    View prompt
    Using the repo thesnarkitecht/rembrandt, run a Lightroom Classic catalog import into Rembrandt for the catalog at <catalog-path>. Report the count of imported edits, keywords and collections, and list every item in the import report that did not come over.

  • Pick the best frames and match exposure across a shoot

    Keep the sharpest frames and make the rest of the shoot look consistent in one pass.

    View prompt
    Using the repo thesnarkitecht/rembrandt, run Pick the best on the shoot at <folder-path> and then Make these consistent using <hero-frame-name> as the hero. Report how many frames were picked and rejected, and check that your own flags were kept.

  • Find photos by describing them, on your own computer

    Search a photo library in plain words without tagging or uploading anything.

    View prompt
    Using the repo thesnarkitecht/rembrandt, turn on Smart search in Preferences and search the library at <folder-path> for <description>. Report the number of matching photos and confirm that no photo or search text was sent off the computer.

How to use Rembrandt

  1. Check you have what it needs: A computer running macOS, Windows or Linux with a photo folder you want to edit; A terminal for the Linux and self-host install commands; A GPU with WebGL 2 support is helpful; the README says older graphics cards are supported at reduced working size.
  2. Open thesnarkitecht/rembrandt on GitHub and read the README and license.
  3. Open a terminal on the Linux or macOS computer that holds your photos.
  4. Run curl -fsSL https://raw.githubusercontent.com/thesnarkitecht/rembrandt/main/install.sh | bash -s -- --server
  5. When asked, choose the photo folder to use. The installer starts the server at login and prints a private link.
  6. Open the private link in a browser on the same computer, then run the same command with --lan added if you want other devices on your network to reach it.

These steps come from our top use case, Self-host a photo editor for your home network, which also has a copy-paste agent prompt.

Rembrandt alternatives · Best AI repos for Content

About this repo

  • Who it is forPhotographers and hobbyists who want a free, local RAW editor without a subscription, and people who want to self-host an editor for their own photo folder.
  • Why it is hot
  • LanguageC++
  • Sourcegithub.com/thesnarkitecht/rembrandt · Back to Hot repos

Requirements

  • A computer running macOS, Windows or Linux with a photo folder you want to edit
  • A terminal for the Linux and self-host install commands
  • A GPU with WebGL 2 support is helpful; the README says older graphics cards are supported at reduced working size
  • Permission to open unsigned builds (System Settings › Privacy & Security › Open Anyway on macOS, More info › Run anyway on Windows)
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Questions about Rembrandt

What is Rembrandt?

Rembrandt is a free, open-source photo editor for macOS, Windows and Linux that develops RAW files, manages a photo library and runs AI features on your own computer. It is an open-source project on GitHub: https://github.com/thesnarkitecht/rembrandt.

Who is Rembrandt for?

Photographers and hobbyists who want a free, local RAW editor without a subscription, and people who want to self-host an editor for their own photo folder.

What can I do with Rembrandt?

5 use cases so far, for example: Self-host a photo editor for your home network; Edit RAW photos in a free desktop app; Move a Lightroom Classic catalog into Rembrandt. Each has steps and a copy-paste agent prompt.

What do I need to run Rembrandt?

A computer running macOS, Windows or Linux with a photo folder you want to edit; A terminal for the Linux and self-host install commands; A GPU with WebGL 2 support is helpful; the README says older graphics cards are supported at reduced working size; Permission to open unsigned builds (System Settings › Privacy & Security › Open Anyway on macOS, More info › Run anyway on Windows).

What are alternatives to Rembrandt?

Other hot AI repos in Content: Voice Studio, Anatomy, Comfy UI, Hyperframes, Earshot.

Is Rembrandt safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.