Show HN: Percy.io, a continuous visual integration tool

This looks like a great project! It looks pretty similar to PhantomCSS, but you're taking the pain out of hosting, which I appreciate: https://github.com/Huddle/PhantomCSS

One of my biggest struggles is introducing development practices like regression testing to traditional designers, a problem which is compounded by a lack of good tooling. Hopefuly Percy (and other tools like it) can help to alleviate this Problem.

I wonder if we could eventually even have TDD for designs. So once a component is designed in Photoshop, the first step would be to submit an image into Percy and then subsequent commits would check if the CSS had evolved to the point where it matched the original static design.

Doesn't say what it does. I can deduce from the title and landing page that it has something to do with UIs and CI. From the FAQ it seems it is web only, as it mentions "the page" (assume that is an html page).

Is this an appropriate summary?

"It can help you visually review changes made to a web front end as part of CI/QA"

Would be neat if you could plug any kind of front end screenshot rendering and not just web.

My favorite in this space is Applitools eyes (https://applitools.com/).

Eyes has really advances image processing capabilities, which meant two huge advantages over everything else I looked at:

1. It's not prone to rendering differences. I can set a baseline in one browser/OS combo, run it on other combinations and set it to only consider real regressions as a failure.

2. It can validate the layout of the page even with dynamic content.