"In my tests, the detail looked just as good in the compressed images as in the original. There are no visible compression artefacts." — 9to5Mac

Squash is a simple, powerful app for compressing and converting images for the web and more.

Squash Features:
- Drag and drop simplicity, single or multiple images supported
- Reduce file size of images and photos for faster uploading
- Compress JPG, and PNG without losing image quality
- Convert PNGs into JPGs
- convert PSD's, RAW, and TIFF files into JPGs
- Optionally remove private JPG meta data
- Batch convert a folder full images
- Custom prefix file names for converted images

Why Use Squash?
- Reducing the size of files for sending as email attachments.
- Optimize images for websites and email campaigns so they load instantly online.
- Slow internet? Drop images on Squash to save time when uploading to Facebook or Twitter!
- Converting TIFF and RAW files into JPG's so they are web friendly.
- And so much more.

What’s New

Version 2.0.4

- Now compatible with High Sierra
- TIFF images are now squashed correctly
- Other minor bug fixes and enhancements

Ratings and Reviews

3.5 out of 5
13 Ratings

13 Ratings

DanKatzLAX ,

Dead simple to use. Limited File I/O.

I can always go free with open source tools, but when you have a well-designed Mac app that just works fast and easy like this, I’m happy to pay for it. That said, I do hope the file type in/out options expand over time. TIFF/JPG/PNG doesn’t cover a lot of ground. And if there’s any FEATURE I’d say was missing, it would be the option to set a megabyte limit for a batch. Enter a value, and the compression would vary on each image to automatically limit file size to that value. Otherwise, nice work.

Pixietale ,

Does what it says

I’ve had and used this app for quite some time now and I need to remember to use it more often. If only the rest of the Internet would use such apps like this more often the Internet as a whole would be so much better-off.

This app really does exactly what they say it does. For highly-compressed JPEG files I still manage to squash an average of 25K out of them. Sure, 25K may seem like nothing, especially in these days of broadband, but every kilobyte saved adds-up. Imagine those graphic-heavy pages, 10 images would be 250K saved. 25 would be 750K. Seriously. I remember the days when a 25K file would take 20 minutes to download. Just because we have blazing speed with broadband these days is really no excuse for not optimizing your images for the Internet.

And it’s not just web pages. An optimized image plopped into your MS Word file makes that Word file smaller. And when that Word file is converted into a PDF file that PDF file is smaller.

Get a clue, people, get this (or something equally as useful) and optimize your junk before plugging up my bandwidth! Hahahah


AHChef ,

Sqush Vs Photoshop Export

Here is a comparison of Squash to Photoshop export. The default Squash compression on .jpg is a 70% compression in Photoshop. Setting both Squash and Photoshop to 60% created equal pixilation in the output file. Output files sizes were: Photoshop: 137kb / Squash 139kb (starting file size: 442kb). For .png files the quality of the exported files was equal between Photoshop and Squash. Output files were: Photoshop: 410kb / Squash 366kb (starting file size 446kb). Bottom line, if you do not have Photoshop, this is a very good tool to compress files for the web. If you have Photoshop, the .png file compression is worth the price of purchase.


Realmac Software Limited
9.8 MB

OS X 10.10 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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