Screenshot testing for developers

Ship UI with confidence: find visual regressions early, see the effect of style updates, and prevent bugs across multiple browsers and platforms.

Before
After
Before
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Trusted by the industry

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Happo is a trusted solution for software companies across the globe. Our customers range from Fortune 500 companies in San Francisco to innovative web agencies in Brazil, and established insurance companies in Japan. Organizations of all sizes and industries rely on Happo to stabilize their user interfaces.

Happo takes screenshots of your user interfaces

Find bugs before your code is shipped to production. Visual regression testing with Happo lets you move faster and with more confidence. Use it with Storybook, Cypress, Playwright, or create your own integration.

⨠ happo run
Initializing...
Pre-rendering 1,238 examples...
Waiting for Chrome results...
Waiting for Firefox results...
Done! View results here:
https://happo.io/a/1/report/a5cdf4d

Get notified when bugs are introduced

  • See the effects of changes directly

  • Test individual components in isolation

  • Say goodbye to tedious manual testing

Example of the Happo GitHub status check

Happo build flow

We provide integrations with developer tools like Storybook, Cypress, GitHub Actions, Circle CI, and others. Focus on writing the code and we will take care of producing consistent screenshots.

Push your code
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Run Happo in (any) CI
Happo takes screenshots
Compare with previous versions

Cross-browser and platform agnostic

For web projects, Happo uses Chrome, Firefox, Safari, iOS Safari, and Edge to take screenshots of components. Native apps can integrate directly with the Happo API.

Chrome logo
Example of the Happo comparisons UI
Example of the Happo comparisons UI
Firefox logo
Example of the Happo comparisons UI
Example of the Happo comparisons UI
Safari logo
Example of the Happo comparisons UI
Example of the Happo comparisons UI
Edge logo
Example of the Happo comparisons UI
Example of the Happo comparisons UI