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Recent articles
How to grow your Happo coverage without losing control of your bill
Happo coverage often stalls when teams worry about snapshot bills growing with their component count. Happo's new `--only` flag renders only the stories affected by a PR — dropping our own builds by 40% — so you can keep adding coverage without the cost anxiety.
Build vs. buy: scaling snapshot testing with Happo
When a major social media platform's in-house Android snapshot testing hit scaling limits with hundreds of developers, Happo built a Gradle plugin bridge. It preserved their existing Roborazzi setup while offloading storage, diffing, and reporting — showing that build vs. buy isn't always binary.
Screenshot testing challenges for native mobile apps
Screenshot testing is well-established on the web, but mobile developers often face different challenges: bloated repositories, slow builds, and scaling pain from storing PNGs directly in the repo. This interview with Henric explores how Happo solved these problems for one large social media platform.
Building accessibility into everyday development
In this interview, Happo co-founder Henric explains how <A11y/> makes accessibility testing continuous rather than one-time. The tool integrates with Storybook, Playwright, and Cypress to surface WCAG violations on every pull request — Happo’s own product started with over 1,400 violations before using it.
Meet the grandfather of the EAA 2025
Joe Lencioni helped bring accessibility into the mainstream at Airbnb in 2016, co-shaping eslint-plugin-jsx-a11y into a tool downloaded over 16 million times weekly. His latest work, <A11y/> by Happo, makes continuous accessibility testing as natural as visual regression testing.