Free guide · Oct 11, 2026

Patchy: edit a layered PSD and check the round trip

How to open a Photoshop file safely, make a reversible layer edit, and save and reopen the result.

The short version

I would start with a duplicate Photoshop file in the browser, then decide whether I need the desktop build. Patchy is a free MIT image editor focused on editable PSD compatibility. It runs on Windows, Apple Silicon macOS, Linux and locally in the browser. This guide follows current official documentation; I haven't independently verified Photoshop round-trip parity.

What's in the full guide

  1. 011. Choose a small test file
  2. 022. Inspect what imported
  3. 033. Try one reversible edit
  4. 044. Save to a new file and reopen
  5. 055. Move to desktop when needed
  6. 06If something looks wrong
  7. 07Sources

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