KeroTools

Image Compressor For Mac

Our Image Compressor feels right at home on a Mac — open it in Safari or Chrome, drag a file in from Finder, and get a result without installing anything from outside the App Store.

No uploads — 100% privateRuns in your browserFree, no account needed

Use Cases

  • Converting a screenshot taken with Cmd+Shift+4 for a doc that needs a different format

  • Compressing images before adding them to a Keynote or Pages file

  • Quick conversions without opening Preview or a heavier app

  • Prepping assets for a project without installing design software

Tips & Best Practices

  • Drag and drop straight from Finder into the browser window
  • Works in Safari, Chrome, or Firefox — whichever is your default
  • Save results to Downloads, then Quick Look with spacebar to check them
  • No dock icon, no background process — it's just a browser tab

How It Works

  1. 1

    Upload Your Images

    Drag in one photo or a whole batch — JPG, PNG, WebP, and more are all supported.

  2. 2

    Set Your Quality Level

    Drag the quality slider and watch the before/after preview update in real time.

  3. 3

    Download the Compressed Files

    Grab each image individually or download the whole batch at once — instantly, no waiting.

Frequently Asked Questions