Diffy is a regression test tool for css regression testing. Diffy verifies your deployments by taking screenshots of pages and comparing them to find the differences. Great for web developers to save time on testing. Allows to test multiple environments like comparing Staging VS. Production or "before" VS "after" the deployment. Can test hundreds of pages in multiple breakpoints with a rich toolset to avoid false positives. Takes nearly zero time to get started. Proprietary screenshots comparison algorithm.