"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

4.0 out of 5
3 Ratings

3 Ratings

NoTiff ,

IT’S NOW OK if you want to squash Tiffs. SEE MY UPDATED REVIEW BELOW.

Sadly, this app does not do what it purports to be able to do.
I bought it to quickly compress Tiffs and convert them to JPEG, which is an advertised feature of this app.
Every Tiff I have tried gives the error message "Sorry, we don't support that file type”. Hopefully this is just a development glitch that will be rectified soon.
I am not the only one with this problem and wonder if the app was properly tested before release, or whether it was rushed through to hit the Black Friday weekend.
For my needs it is not fit for purpose without this feature. That said it works pretty well with JPEG, RAW, and PNG (Slowly) so I am prepared to give it a few days to let the developer sort out the Tiff problem before asking for a refund.

I’ve received a response from the developer: 'Sorry, but somehow the tiff conversion got lost in the release. It'll be fixed on the next update’ Please be aware if you are buying this to convert TiFFs it will not do so until there is a revision beyond 2.0.1

UPDATED REVIEW: Since version 2.02 the problem I experienced with compressing Tiffs has been fixed. Squash now does a very decent job of compressing Tiffs and converting them to JPEG. As a photographer I tend to keep the JPEG quality set to the higher end of the slider but even at the lower end the results are acceptable if you just want to get a low resolution proof off quickly. On a calibrated monitor there is a slight shift in the depth of the colours but this is only likely to be of concern to professionals who depend on producing colour critical output for their clients, otherwise Squash now does a very good job of compressing high data images quickly with hardly any noticeable difference to the image quality. I shall up my rating to 4 stars because of the very slight colour issue. If that can be resolved the Squash will move to a near perfect app for photographers to use.

Developer Response ,

Thanks for the feedback. I'm pleased to say JPG to TIFF conversion has now been fixed in the latest release (2.0.2). If you have a spare moment, I'd really appreciate it if you could revise your review and star rating to reflect the latest release of Squash.

If you need any further help with Squash please get in touch via email
Happy Squashing!

Benwho? ,

Used to work well until Catalina

But as seems to be classic with this Dev, they make a slick app at first then seem to drop it after a few years. This isn't the first app I've paid good money for from them, but I won't be buying from them again until they acknowledge this and do right by their customers.

Ivan Opinion ,

Poor compression compared with PhotoShrinkr

It “squashed” 36KB out of a 1.6MB file ..leaving the file still around 1,580KB.

In comparison, PhotoShrinkr works faster (but without any pretty animation) and delivers a 684KB file from the same source, in other words shrinks the original to about one third of its size.

This was very poor performance for £5.99 - it promises plenty, and delivers VERY LITTLE.


Developer Response ,

Be sure to check out he Preferences as you can tweak the amount of compression applied. Hope that helps!


Realmac Software Limited
9.8 MB

OS X 10.10 or later, 64-bit processor



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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