content-visibility: the new CSS property that boosts your rendering performance

Coming to Chromium 85 is content-visibility (part of Display Locking):

content-visibility enables the user agent to skip an element’s rendering work, including layout and painting, until it is needed. Because rendering is skipped, if a large portion of your content is off-screen, leveraging the content-visibility property makes the initial user load much faster. It also allows for faster interactions with the on-screen content. Pretty neat.

You see that correct in the image above: rendering went from 232ms down to 30ms … that’s a 7x improvement!

Now don’t go plastering this all over your site, but use it carefully. As Una noted:

Combined with contain-intrinsic-size it’d look like this:

.story {
  content-visibility: auto;
  contain-intrinsic-size: 1000px;
}

content-visibility: the new CSS property that boosts your rendering performance →

Published by Bramus!

Bramus is a Freelance Web Developer from Belgium. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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