A testing system for catching visual regressions in Web applications

This project hasn't been updated in two years. A couple of active alternatives:

https://github.com/BBC-News/wraith Wraith: A responsive screenshot comparison tool.

https://github.com/garris/BackstopJS BackstopJS: visual regression testing by comparing DOM screenshots over time.

https://github.com/Huddle/PhantomCSS PhantomCSS: Visual/CSS regression testing with PhantomJS.

It's been replaced by Jest: https://facebook.github.io/jest/

A couple of weeks ago, idle speculation led me to discover both the existence of screenshot-diffing QA as well as some other options:

https://news.ycombinator.com/item?id=13136205

Looks like Facebook doesn't use this anymore. I wonder what they replaced it with?

For people interested in this topic/catching visual regressions take a look at Kontrast

https://github.com/harrystech/kontrast

I tried to set up a system like this for catching differences between browsers but eventually gave up. I used selenium which didn't work well at all as the browsers constantly lost connection ur hung. I think testcafe [1] looks like a promising alternative. Image diffing is the simplest part but getting consistent images to compare can be tricky. Automatically finding regressions with few false positives ain't easy. [1]: https://github.com/DevExpress/testcafe

I have used https://ghostinspector.com/ which is a fremium alternative.

FYI: Halted project.