Percy provides visual regression testing for web apps. Just like CI services continuously show you if tests are passing, Percy shows you exactly what pixels have changed with each pull request before those changes are launched to production or even to staging.

Percy can generate these pixel-by-pixel "visual diffs" for any page, any complex UI state, and fast enough to continuously integrate developer changes. Percy integrates with GitHub so you can do visual reviews right alongside code reviews and catch nasty style regressions before they get to production.

Automated visual testing for every PR

Approve visual changes in one click as part of your normal code review process.

Percy integrates directly into your test suite and development workflow to provide iterative and fast feedback about visual changes. Percy supports many common CI services and development environments.

Simple and fast visual diffs at scale

Designed to be integrated in minutes and have no performance impact on your tests. Percy handles all the heavy lifting of consistent screenshot rendering and visual diffing in our systems, so you don't have to. Percy was built to scale with the increasing size of your team and app.

Get started! Stop doing QA in the dark—automate your visual testing today.