Build & Ship · Testing & Quality
0 paid against 10 free you can run yourself.
Paid against free › Build & Ship › Testing & Quality › Visual Testing · Building the product on Repo Radar
Visual testing catches unintended changes to how a UI looks by comparing new screenshots with approved baselines and letting a team review the differences. Hosted platforms include Percy, Chromatic, Applitools, Argos, Happo, TestMu AI SmartUI, Vizzly and Pixeleye for components and pages, Diffy for whole websites, and Ghost Inspector as part of broader browser testing. On the open-source side, Argos and Visual Regression Tracker give you a self-hosted review platform, BackstopJS, reg-suit, Testplane and Creevey run visual tests, Swift Snapshot Testing covers iOS, and jest-image-snapshot, pixelmatch and odiff are building blocks. Marks come from vendor pricing pages and project READMEs as of 19 October 2026; nothing was tested hands-on.
Prices and free tiers as checked, dated on each review.
Paid tools for this job are being added. The free alternatives below are ready to use.
Free to use. You run it on your own server.
They do this job.
Catch CSS curve balls.
★ 7.2kFreePImapbox/pixelmatchThe smallest, simplest and fastest JavaScript pixel-level image comparison library
★ 7kFreeSWpointfreeco/swift-snapshot-testing📸 Delightful Swift snapshot testing.
★ 4.4kFreeJEamericanexpress/jest-image-snapshot✨ Jest matcher for image comparisons. Most commonly used for visual regression testing.
★ 3.9kFreeODdmtrKovalenko/odiffA very fast SIMD-first image comparison library (with nodejs API)
★ 3.3kFreeREreg-viz/reg-suit:recycle: Visual Regression Testing tool
★ 1.3kFreeTEgemini-testing/testplaneTestplane (ex-hermione) browser test runner based on mocha and wdio
★ 832FreeVIVisual-Regression-Tracker/Visual-Regression-TrackerBackend and Frontend application for tracking differences via image comparison
★ 722FreeARargos-ci/argosThe open source visual testing platform for teams and AI agents. Review the product, not just the code.
★ 642FreeCRcreevey/creeveyCross-browser screenshot testing tool for Storybook with fancy UI Runner.
★ 435FreeA second choice: they cover part of this job or are a building block for it.
One job at a time: the paid tools worth paying for, the free ones you can run yourself, and who should pick which.
No tracking pixels. One click to leave. We use your address to send Stack Radar and nothing else. Privacy.