Phil Glass
Monzo
Happo allows us to make changes to components used on hundreds of screens and upgrade core UI dependencies with confidence. It has been a big productivity boost over our previous workflow.
Visual testing with Happo and Playwright
Elevate your Playwright tests with powerful visual testing that detects UI changes automatically. Convert time-consuming manual reviews into fast, reliable checks while maintaining visual precision throughout your application.
Easy integration
Integrate Happo with Playwright in minutes. Use your existing tests and inject Happo screenshots for key UI states.
View setup instructionsStable & cross-browser
Happo captures screenshots in real browsers — Chrome, Firefox, Safari, Edge and iOS Safari. We parallize test runs across our large fleet of browsers to give you fast results.
Learn about browsersResponsive testing
Tell Happo to take screenshots in different viewport sizes. This will ensure your UI looks good no matter what device they are rendered on.
Configure viewport sizesCI integration
With minimal setup, Happo will run with your Playwright tests in your CI/CD pipeline. We support GitHub, Bitbucket, Azure, CircleCI, and more.
CI integration docsLess flake
Happo will automatically silence animations, wait for asynchronous assets, fonts, and more. And you can specify a color-delta tolerance for visual changes so that you don't have to worry about minor differences.
Learn how to silence flake
Adam Neary
Airbnb
Happo is a straight up life-saver. How many times did you think your change was contained only to discover that ten other teams started using what you built, and your change breaks three of the ten? Without Happo, you might not know.
Denitsa Kulezich
Happo supports the latest versions of most browsers and emulators. Their speed of image comparison is impressive. They also have Github and CI integration and plugins to support Storybook and Cypress directly.
Spot differences with ease
Happo's set of tools make it easy to spot differences between screenshots. When side by side isn't enough, the Diff view will highlight exactly where the change is located, and the swipe view allows you to quickly switch between the before and after.
To reduce noise, you can set a color-delta tolerance for visual changes. Happo will then treat changes below this threshold as noise and ignore them. This is great for image compression noise, anti-aliasing, and other minor differences.
