Ask HN: Why does Chrome use subpixel rendering on every site except Gmail?

When black fonts are displayed on a monitor, they are smoothed in two ways: - regular font smoothing - grey pixels are used to make lines seem smoother - subpixel rendering - colored pixels are used, to effectively increase horizontal resolution When I look at some text on Google Chrome, I see different techniques used to render black text in different places: - subpixel rendering: tab bar, URL bar, PDFs, Google home page, other random web pages - regular font smoothing: Gmail Even if I zoom out a lot (making the text almost illegible), Gmail is still rendered without subpixel rendering. It seems like a weird choice (assuming it's not somehow unique to my setup). Does anyone have an idea why? In case it's relevant, I'm using: - Ubuntu 22.04.2 LTS - Google Chrome 112.0.5615.49 - NVidia driver version 525.85.12