Squash delivers a focused, privacy-first workflow that makes optimizing images fast, reliable, and refreshingly easy.
download squashIf you can imagine, I resize and compress dozens of images every day. When I do, I have to go through several steps to get them optimized for posting along with their respective articles. I’m constantly looking for ways to update my process. Squash is a great tool to help people optimize their images by quickly batch converting, editing, and resizing images.
About Squash for Mac
Squash for Mac is a powerful, privacy-first image compression app built exclusively for macOS. With support for popular formats like JPEG, PNG, HEIC, and WebP, it offers an intuitive drag-and-drop interface, batch processing, and features like metadata removal and watermarking—all designed to help users reduce file sizes without sacrificing quality. Built using Swift and SwiftUI, Squash is modern, fast, and designed to take full advantage of the Apple ecosystem, with an eye toward future expansion across other platforms. The current version, Squash 3, launched in June 2021, following Squash 2’s release in 2017.
As a fully local image editor, Squash keeps your content private and secure—nothing is sent to the cloud, making it a trustworthy alternative to online tools. Beyond Squash, the development team also works on RapidWeaver Classic, RapidWeaver Elements, and DevAnt. Squash is developed by Realmac Software, an independent software company based in Brighton, England. Founded in November 2002 by Dan Counsell, Realmac has a long-standing reputation for creating award-winning, user-friendly applications for macOS and iOS.
Realmac Software remains committed to crafting delightful, high-quality applications that enhance productivity and creativity for Mac users worldwide.
Main Features
Resize Convert Watermark Compress Adjust Filters Export Metadata Rename Presets Grid View Zen ModePricing and Availability
Squash for Mac is available for download from realmacsoftware.com/store for $49.00 for a one-year subscription. This means that you get updates for that time period. You can continue using the app but it may not be the most up-to-date version. It is also available for download in the Mac App Store. There are two in-app subscription options with the Mac App Store version — $2.99 for a monthly plan and $29.99 for a 1-year plan. This app is also available for subscribers of SetApp.
Privacy Policy
According to the Mac App Store, no data is collected from the app. The full privacy policy can be read here.
Setup & Installation
Setup of the app is very easy. Once you download the app — if you do it through the RealMac website or SetApp — all you have to do is drag the app into your Applications folder. The Mac App Store version is a little different as far as installation goes. The App Store automatically places the app into your applications folder.
User Experience
Squash is incredibly easy to use. To get started, you select the photos you want to batch edit/export and import them into Squash. Then you select the options you want to use on those photos from the tools in the right-hand tool drawer. Once you have all your settings prepped, you select Export Images. That’s it. It’s a very quick process.
The first time I used Squash I didn’t think anything happened. So, I clicked Export again and then I had duplicate files. I was able to resize several pictures and adjust their quality as JPEGs before they exported and this greatly reduced the file size of each image. My original files totaled approximately 46MB and after I resized them, they were 3.9MB. After I ran the images through Squash, I dropped them into ImageOptim to see if they could be further compressed.
ImageOptim is a similar image optimization tool, but it only compresses and optimizes image files — it does not give you the same options that Squash does for resizing, image adjustments, or any of the other edits Squash provides. ImageOptim’s sole purpose is to reduce file size. So, I took the images I squashed and dropped them into ImageOptim, and the file sizes were reduced to a total of 1.5 MB. So, even though ImageOptim compressed them further, I would still say that Squash did a great job with the resizing.
Limitations and Areas for Improvement
One important thing to note is that all edits or adjustments you make are applied to the entire batch—you can’t edit individual images within a batch. For example, if you have five images and only one needs brightness adjustment, you’ll need to process that image separately. This limitation makes Squash ideal for images shot under similar conditions (e.g., all from one photo session) but less ideal if you need per-image fine-tuning.
Another limitation is the basic-level image adjustments. You have the ability to change Brightness, Contrast, Sepia, Monochrome, Blur, Sharpen, and Vibrance levels, but there are no exposure, white balance, or sharpness controls. These aren’t necessarily dealbreakers, especially if you’re using Squash as a quick processing tool—but they’re good to keep in mind.
Performance and Workflow
Squash handled my medium-sized batches without issue. The export process was fast and used minimal CPU, even when batch processing 50+ images. It doesn’t bog down your system, and having the ability to save presets means you can apply your exact setup repeatedly with one click. This is a huge time-saver if your workflow is consistent. I also appreciated features like Zen Mode, which minimizes distractions while you work, and Grid View to keep track of everything at a glance.
Conclusion
Squash for Mac is a thoughtfully designed utility that hits the sweet spot between simplicity and functionality. It’s especially handy for users who regularly handle batches of images and need a quick, private, and efficient way to resize, compress, and optimize them. While it lacks some advanced editing and automation features, its streamlined interface and focus on speed and privacy make it a standout tool for content creators, bloggers, and web designers. If you’re looking for a local-first app that balances power with ease of use, Squash is well worth considering.
For more information, visit realmacsoftware.com
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