pixelmatch

Good point on offloading it as for the amount of work that's required in setting up a wrapper for something like Puppeteer, Playwright etc that also works with a probably quite specific setup, I've found the best way to get a quality image consistently is to just subscribe to one of the many SASS' out there that already do this well. Some of the comments above suggest some decent screenshot-as-a-service products. Really depends on how valuable your time is over your (or your companies) money. I prefer going for the quality (and more $) solution rather than the solution that boasts cheap prices, as I tend to avoid headaches of unreliable services. Sam Vines Boots theory and all that. For image comparison I've always found using pixelmatch by Mapbox works well for PNG's https://github.com/mapbox/pixelmatch

I've had a lot of success using the pixelmatch library for image comparison / deduping https://github.com/mapbox/pixelmatch

You could absolutely get this working with GitHub Actions with a bit of creativity. I've been playing around with my own image-diff tool for this kind of thing, but it's not yet in a decent state: https://github.com/simonw/image-diff - there are other, better options out there such as https://github.com/mapbox/pixelmatch Needle is an older system that did this using Selenium - updating that to work with Playwright (or Playwight via shot-scraper) would be an interesting project: https://github.com/python-needle/needle

Thank you! I'd also like to list some of the building blocks of GL JS that remain open source and are heavily used in other open source projects: - GeoJSON-VT (fast GeoJSON processing) https://github.com/mapbox/geojson-vt - Earcut (triangulating polygons) https://github.com/mapbox/earcut - Supercluster (point clustering) https://github.com/mapbox/supercluster - vt-pbf (converting GeoJSON tiles to VT) https://github.com/mapbox/vt-pbf - vector-tile (decoding vector tiles) https://github.com/mapbox/vector-tile-js - pbf (fast reading/writing of protobuf) https://github.com/mapbox/pbf - TinySDF (generating SDF from local CJK fonts) https://github.com/mapbox/tiny-sdf - Potpack (generating sprite layouts) https://github.com/mapbox/potpack - grid-index (spatial index for collisions/querying) https://github.com/mapbox/grid-index - Pixelmatch (imag

Congrats on what you’ve made! What sort of noise are you running in to? (Curious) In an old project we actually did something a bit more based on visual changes. Basically detected visual diffs and got coordinates of offsets to the change. We then found the smallest html container that encompassed the diff and highlighted it. Using visual diff you can fuzz things a bit to handle artifact and small movements. A good lib we have some miles on https://github.com/mapbox/pixelmatch And this write up on niffy is pretty good https://segment.com/blog/perceptual-diffing-with-niffy/