CheckOps home

Tools directory

H

CheckOps

Happo

Happo is a commercial cross-browser visual regression testing service that renders Storybook stories, Playwright, Cypress and other tests in Chrome, Firefox, Safari, Edge and iOS, plus native iOS and Android apps, on every pull request.

Visit website

Latest public signals

Not refreshed yet. Refresh reads the public site and, when the entry has a GitHub repository, the latest release.

Visit Website

Introduction

Happo says it ‘catches visual regressions of every kind, from a button that moved to a contrast that dropped to an animation that changed, on every pull request’, whether a developer or an AI agent wrote the change (vendor claims).

Its key differentiator is real cross-browser rendering: Happo renders every story or test in Chrome, Firefox, Safari and Edge, on iPhone and iPad, and in native iOS and Android apps. Sources include Storybook stories and Playwright, Cypress and other tests. Happo then compares results with the baseline and posts a status on the pull request for review.

The free tier includes 5,000 snapshots a month with no credit card needed.

In the quality loop it supports component and end-to-end visual checks across browsers before merge.

Features

  1. Cross-browser rendering: Chrome, Firefox, Safari, Edge and iOS.
  2. Native apps: iOS and Android screenshots.
  3. Storybook support: Render every story.
  4. E2E integrations: Playwright, Cypress and more.
  5. PR reviews: Status checks and approvals.

Pros

  1. Real browser coverage: Catches browser-specific issues.

Cons

  1. Snapshot-based pricing: Costs rise with coverage.
  2. SaaS only: Screenshots processed externally.
  1. Install the Happo integration for Storybook or Playwright.
  2. Add your API key and secret in CI.
  3. Open a pull request and review the Happo report.

Resources:

Pricing

Free 5,000 snapshots/month; paid plans from about $149, $399 and $749 per month. See site.

  1. Design-system teams needing cross-browser component checks.
  2. Not a fit for teams needing self-hosting.

Conclusion

Happo stands out for real multi-browser and native app visual testing.

On CheckOps, Happo is filed under the End-to-end & functional and Prototype & UX testing stages. Related tools listed here include Percy, Chromatic, Applitools, Argos, Visual Regression Tracker and LambdaTest. Before choosing, compare them on licence, supported languages and platforms, hosting model, and how well each fits your existing CI pipeline. Facts on this page were checked against the official website, documentation and repository on 11 November 2026; statements the vendor makes about its own product are marked as vendor claims.

Alternatives

Other tools on CheckOps that cover similar ground. Open a page, or compare one with Happo side by side.