I love this! I'm pretty biased, but I think everyone should be doing VRT. I used to work at Percy and now I'm building Vizzly. :p

Playwright uses pixelmatch, which is decent but limited. It returns the number of mismatched pixels and a diff image, but nothing about where changes cluster or what kind of change you're looking at. I built Honeydiff (https://github.com/vizzly-testing/honeydiff) for Vizzly to go further: spatial clustering to group changes into regions, SSIM for perceptual scoring, and intensity stats to characterize what actually changed. My comparison vs odiff & pixelmatch here: https://vizzly.dev/blog/honeydiff-vs-odiff-pixelmatch-benchm...

I love OSS (https://vizzly.dev/open-source/), so if anyone wants to drop Vizzly into their project to get baseline management, review workflows, dynamic content handling, local VRT TDD, etc, it's there.

Anyway, I've been thinking about and building around this problem for a while now. Love to see others doing it too. I feel like a lot of folks have a bad experience that turns them off and I'm hopeful I can make a dent in that problem.