[troupo]

> But at the end of the day, it's just mostly WebKit (and Blink derived from it) and Firefox

Blink is a separate engine, as it has significantly diverted from WebKit.

[atonse]

How significantly could it actually change? Maybe the process model, etc but I doubt most of the layout algorithms etc have changed much.

[solardev]

Blink forked from Webkit more than a decade ago. There are tests that try to measure their compatibility, like https://wpt.fyi/results/?label=experimental&label=master&ali... (part of https://web-platform-tests.org/). They also have different JS engines these days (V8 vs JSCore).

That said, as a frontend dev, I very very rarely run into real world issues between Safari and Chrome. More often it's Firefox/Gecko that lags behind, usually in some sort of graphics optimization (SVG and canvas stuff). Also some differences in WebGL and webgpu support, but those are niche enough that it's not a big deal yet.