Compresto — Mac download

What's the point?

Compresto shrinks video and image files offline. Nothing goes to a server. Drag in a large screen recording or a folder of RAW photos, pick a compression level, and get a smaller file back. It's a utility for anyone who emails attachments, posts to Slack, or archives work without keeping multi-gigabyte originals.

FFmpeg handles most codecs, exports to MP4 or WebM

Common video and image formats. The app uses FFmpeg under the hood, so it handles most codecs you would throw at it. You can export compressed video as MP4 or WebM, and transparent video is supported.

Private compression without uploading to a web tool

Small teams and solo workers who need a quick, private way to reduce file sizes. It replaces the cycle of uploading to a free web compressor, waiting, and wondering where your file just went.

Right-click a file in Finder to compress it instantly

Compresto works where your files live, not in a separate library. A few integrations make it feel native to macOS:

• Finder Quick Actions — Right-click a file and send it straight to Compresto. No launching the app first.
• Raycast extension — Type the file name in Raycast and push it to a watched folder or a one-off compression. The extension ships with version 1.30.1.
• Watched folders — Point any folder at Compresto. Drop a file in, get a compressed version out. Works with screenshot utilities (like CleanShot X), camera imports, and browser download folders.
• Share sheet — The macOS share menu picks up Compresto as a destination, so you can compress from Preview, Photos, or Quick Look.
• Shortcuts support — Wrap a compression step into a Shortcut. Useful for automated export workflows: edit in Final Cut, export to a hot folder, auto-compress, then attach to an email.

Because the app stays offline, none of these integrations ever wait on a server. The compresto mac app finishes a batch while you switch to the next task.

Quality 5 barely shrinks files; level 2 or 3 suits Slack

Three things trip up new users on compresto mac:

1. Picking the highest quality for everything. Quality level 5 preserves near-lossless output, but the file barely shrinks. For Slack or email, level 2 or 3 is usually plenty. Reserve level 5 for archival masters.
2. Dropping an entire folder into a watched folder without checking the preset. Watched folders inherit whatever quality and format you last set. A common slip: compressing a folder of finished client videos to WebM at level 1 because that was the preset for internal review drafts. Lock the preset before pointing a hot folder at production assets.
3. Assuming the app can read any codec without components. Compresto relies on FFmpeg components. If compression fails on a niche format, check that the components installed correctly — version 1.30.1 fixed a failure here, but a quick reinstall of components solves most silent errors.

Version 1.31.1 is available now. The developer has posted the full list of changes on the Compresto site.

• macOS 13 or later
• Apple Silicon or Intel 64-bit processor