There are well-established tools for automating the testing of how software behaves, but very few that automate the testing of how software looks. This is how Friday does visual regression testing. We first started investigating visual regression testing in 2012, starting with Wraith and subsequently forking it to use Selenium webdriver rather than PhantomJS. We’ve also tried Backstop and PhantomC
![How we do visual regression testing](https://cdn-ak-scissors.b.st-hatena.com/image/square/7f0c3941897f1864480f77dae25558d010d48f40/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F1%2AUdTRHecNzCe9bReGEmNhjg.jpeg)