- Starting price
- $149/mo
- Website
- happo.io
About Happo
Happo is a visual regression and accessibility testing tool for front-end teams. It catches visual changes and accessibility violations in CI on every commit, helping large teams ship UI with confidence.
Key Features
In practice, Happo analyzes changes as you push commits, surfacing exactly what changed and why it matters across browsers:
Visual regression checks
Takes screenshots and generates side-by-side diffs to show precisely what changed between code versions, across Chrome, Firefox, Safari, and Edge.
Accessibility checks
Detects common issues like color contrast and focus order, flags violations, and records where fixes are needed in the UI.
Cross-browser rendering
Renders components in multiple browsers from a single codebase so what you ship matches user expectations everywhere.
CI integration & workflows
Works with Storybook, Cypress, Playwright, and custom pipelines; runs automatically on every commit and surfaces diffs for quick review.
Summary
Best for frontend engineers, design-system teams, and QA or release teams guarding UI changes.
Pricing
View pricingPlans and prices as listed on happo.io as of Sep 18, 2026.
Starter
$149 / month
- Unlimited users, concurrent runs, and access to the Happo API
- 50,000 snapshots
- $0.006 for each additional snapshot
- Accessibility testing
- Screenshots in Chrome and Firefox
Growth
$399 / month
- Unlimited users, concurrent runs, and access to the Happo API
- 150,000 snapshots
- $0.006 for each additional snapshot
- Accessibility testing
- Screenshots in Chrome, Firefox, and Safari
Pro
$749 / month
- Unlimited users, concurrent runs, and access to the Happo API
- 300,000 snapshots
- $0.006 for each additional snapshot
- Accessibility testing
- Screenshots in Chrome, Firefox, Safari, iOS-Safari, and Microsoft Edge
- Annual billing available
Enterprise
Custom pricing
- Unlimited users, concurrent runs, and access to the Happo API
- 1M+ snapshots
- Annual plans, SLAs, and more
- Single Sign-On (SSO)
- Enterprise-level support in US and EU timezones
- Accessibility testing
- Screenshots in Chrome, Firefox, Safari, iOS-Safari, and Microsoft Edge
