Images · Compress Images

Compress images on Mac

Shrink photos for email and the web.

Runs on your MacFinder Quick Action

Three steps. That's it.

1
Drop your files
Drag files onto Compress Images, choose them with Choose Files, or right-click them in Finder.
2
Choose the options
Set what you need in the options panel, such as quality from 10% to 100%. Your choices are remembered for next time.
3
Get the result
The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.

What Compress Images does

Re-save photos as JPEG or HEIC at the quality you choose and optionally cap their size, typically cutting file sizes by 60–90% with no visible difference.

It's also a Finder Quick Action: right-click files and choose OMT: Compress Images.

Options

Quality from 10% to 100%Save as JPEG, HEIC or AVIFMax size: 3840, 2048, 1600 or 1024 px

Great for

Email a batch of photos
Speed up a website
Upload photos to a form with a size limit

Questions about Compress Images

Does Compress Images upload my files?

No. Compress Images runs entirely on your Mac, so your files never leave it and it works offline.

Will Compress Images change my original files?

No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.

What does Compress Images need?

Just a Mac with macOS 26 or later. There's nothing else to install.

Can I use Compress Images from Finder?

Yes. Right-click files in Finder and choose Quick Actions › “OMT: Compress Images”. It runs in the background and notifies you when it's done.