Batch Image Compression on Mac

Why batch compression matters

Optimizing images one at a time wastes hours when you have dozens or hundreds of files. Web projects, blog migrations, photography exports, and app assets all benefit from batch processing: compress everything in one step.

How to batch compress with TrimrPix

Open TrimrPix on your Mac
Select or drag hundreds of images at once, in any mix of formats
Choose your quality level (10% to 100%, or a preset)
Click Optimize, and every image is processed
Done. Files that got smaller are saved beside the originals. Anything that would not shrink is left exactly as it was.

Watch Folder: automatic compression

TrimrPix includes a Watch Folder feature. Set any folder on your Mac as a watched folder, and every new image added to it is optimized automatically, with no manual steps.

This is ideal for:

Download folders: compress images as they arrive
Screenshot folders: auto-optimize macOS screenshots
Export directories: automatically compress exports from Figma, Sketch, or Photoshop

Supported formats

TrimrPix handles JPEG, PNG, GIF, AVIF and HEIC in a single batch. You can mix formats freely. The app detects each file type and applies the right compression. For details on when to use each format, see the Image Formats Guide.

Use cases

Web developers: compress site assets before deployment
Bloggers: optimize post images before uploading to WordPress or Ghost
Photographers: reduce file sizes for sharing or portfolio sites
App developers: compress App Store screenshots and assets