Kaleidoscope 6.6 is out today, introducing AI-powered image alignment built on Apple’s Vision framework. Whether you’re comparing screenshots or photographs, Kaleidoscope will now automatically align images based on their content. In addition, this release brings refinements to the recently introduced Pixel Comparison.
Following a tradition we started last year, this post collects a few illustrated tips about lesser-known additions to Kaleidoscope in 2025. Small features that can come in very handy once you know they exist.
With Kaleidoscope 6.4 we introduced a complete rewrite of the Image Comparison. With that groundwork in place, we can now start to build on it and innovate further.
Pixel Comparison in Kaleidoscope 6.5 is the first major step—a new way to inspect and compare the exact values of individual pixels, down to the smallest color differences.
It took us a tad longer than we had initially hoped, but here it is: the final version of Kaleidoscope 6.4 with the all new Image Comparison — a complete rewrite of one of Kaleidoscope’s three core features.
Today, we’re excited to introduce an all-new Image Comparison in Kaleidoscope 6.4 Beta! This (pre-)release is all about getting the foundation right. We’ve rebuilt the Image Comparison on a completely new technology stack. That means it’s faster, more reliable, and ready for future innovation. From here on out, adding new features will be easier.
Users updating their Mac to macOS Tahoe can rest assured that Kaleidoscope has been updated to embrace the new design and tested extensively.
Whether you’re syncing code, backing up photos, or pruning big directories, folder diff just got both smarter and safer.
A greatly enhanced Raycast extension is the latest result of our continuous quest to improve your productivity and integrate Kaleidoscope with apps you love.
Learn how to go from comparing text in Kaleidoscope 6.1 to editing it in your favorite editor/IDE with just a single click.
Kaleidoscope can now hide equal blocks of text by collapsing them into a single expandable line. This significantly shortens text comparisons when most of the text in A and B is identical. Collapsing unchanged lines lets you quickly focus on the differences.