Diffy
Visual Regression Testing
Diffy is a visual regression testing tool that captures screenshots of web pages across environments and compares them to detect visual changes and regressions before they reach production. It supports comparisons between production, staging, development, local sites, and Figma designs, helping teams identify layout shifts, missing content, and style drift.
Key features include AI-generated diff summaries that group changes by type and prioritize by impact, a Claude skills plugin for running comparisons from an editor, and a CLI tool for CI/CD integration. It supports GitHub Actions, GitLab, CircleCI, Jenkins, and other CI platforms, along with hosting providers like Pantheon, Tugboat, Upsun, Cloudflare, and Vercel. Additional capabilities include screenshots as logged-in users, dynamic content mocking, CSS/JavaScript injection, multiple breakpoints, Chrome and WebKit engines, and integrations with Playwright, Figma, Slack, Zapier, and webhooks.
Diffy is designed for developers, QA engineers, and project managers working on complex websites. It offers a free plan with 500 screenshots per month, two environments, and one month of data retention. A Pro plan provides multiple environments, CI automation, and six months of data retention, with usage-based screenshot volumes and annual billing options.
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