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slightlyoff@toot.cafe ("Alex Russell") wrote:

But seriously, a 20% win for a one-line change? Incredible.

The "fix" (in addition to faster selectors and font fallback ordering) was to make footnotes *also* c-v deferred. Because a lot of my content is in footnotes (below the fold), this has a massive effect, cutting style and layout costs in ~half for first load.

https://developer.mozilla.org/en-US/docs/Web/CSS/content-visibility

https://web.dev/articles/content-visibility

Attachments:

• WPT side-by-side video showing the improved version of infrequently.org rendering 500ms faster on a low-end device, which given the slow emulated network is only a 20% win. For users on slow devices but faster networks, the gains will be even larger (as a fraction of total time). (remote)