PixelPerfect
Automated visual regression testing that catches UI bugs before your users do
About
Every frontend deploy risks introducing unintended visual regressions — a CSS change that breaks a button on mobile, a font-weight shift that affects a headline you did not touch, a margin collapse that pushes content off-screen in a specific browser. Manual QA catches some of these. PixelPerfect catches all of them.
Connect PixelPerfect to your CI pipeline. On every pull request, it spins up a headless browser, navigates to every route in your application, takes screenshots across 5 viewport sizes and 3 browsers, and compares them pixel-by-pixel against the baseline from your main branch. Any regression above a configurable threshold fails the PR check with an annotated diff image.
Integration points
- GitHub Actions, CircleCI, and GitLab CI plugins
- Slack notifications with before/after diff images attached
- Allowlist for intentional changes: approve a diff to update the baseline
- Works with Next.js, React, Vue, and any server-rendered framework