Product Development

Photokompressor.

Photos off a phone are far larger than they need to be. Photokompressor squeezes them down — typically 70–90% smaller with nothing you can see — straight from the right-click menu, Finder or Explorer. Select one photo or four hundred, right-click, and a small window opens where your cursor is.

• JPEG, WebP or PNG out
• iPhone HEIC in
• Any size batch
• Optional resize
• Works offline

macOS 1.2.0 · Windows 1.2.0 — free & open source

Download for macOS ↓

8.9 MB DMG Apple Silicon, macOS 13+ Version 1.2.0

Needs an Apple Silicon Mac (M1 or newer) on macOS 13 Ventura or later — it isn't notarized by Apple, so the first launch needs one extra click (below)

1. Open the .dmg and drag Photokompressor.app onto the Applications shortcut — or run it from wherever you put it, it doesn't need to live there. Eject the disk image when you're done.
2. macOS will refuse to open it the first time. The app isn't notarized — notarization needs a paid Apple Developer account, and this project is free. Open System Settings → Privacy & Security, scroll to the bottom, and click Open Anyway next to the Photokompressor line, then confirm. (On macOS 14 and earlier you can instead right-click Photokompressor.app, choose Open, then Open again.) Only needed once.
3. Click the round gear icon, switch on “Right-click menu”, and you're done. Right-click any photo in Finder and choose Compress with Photokompressor from Quick Actions.

SHA-256   9a9f15a98be1f93da3b7a785e18bdeef1c22a2caf9c760cf920432c0ef4447bc

Download for Windows ↓

19.7 MB ZIP Windows 10 & 11, 64-bit Version 1.2.0

Needs the .NET 8 Desktop Runtime, which most machines already have — the app will say so if yours doesn't

1. Unblock the ZIP before extracting it — right-click it, Properties, tick Unblock, OK. Windows otherwise treats every extracted file as downloaded-from-the-web.
2. Extract it somewhere permanent. The right-click menu remembers where the app lives, so moving the folder afterwards breaks the entry.
3. Windows will say the publisher is unknown. The app isn't code-signed — a certificate costs more per year than this project does. Choose More info → Run anyway.
4. Click the round “i”, switch on “Right-click menu”, and you're done. On Windows 11 the entry sits under Show more options.

SHA-256   fb097067e65b1d85be8a8a4e256cd932b98024229a2f53bb6276ac91239dcbd9

Source on GitHub All releases MIT licence Third-party notices

Please keep backups. Compression throws away image data on purpose, and EXIF and GPS tags are stripped from the output. If you turn off Keep originals the originals go to the Recycle Bin on Windows or the Trash on macOS — on Windows the app refuses to run that way anywhere it can't use the Recycle Bin, but neither a Recycle Bin nor a Trash is a backup. Provided as is, without warranty, and used entirely at your own risk.

Nothing you compress ever leaves your computer. There is no account, no upload, no telemetry — the app makes no network connections at all. Under the hood it uses libvips built against mozjpeg, which is why the files come out so much smaller than a plain “save as JPEG” at the same visible quality.