Diffy

Diffy is a visual regression testing service for websites, aimed in particular at agencies managing many complex sites. It takes screenshots of a site and compares them to find unexpected changes.

Production can be compared with staging, development or any other environment side by side, and scheduled comparisons monitor sites so that broken layouts, missing content or style drift are flagged when they appear. Screenshots can also be compared with Figma designs. AI-generated summaries group the changes by type, such as layout, content or style, and prioritise them by impact.

Diffy is a commercial service.