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Layout instability #122

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Description

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This GitHub issue is for collecting web developer signals for Layout instability.

The layout-shift performance entry and LayoutShift API measures the layout stability of web pages based on movements of the elements on the page. They're used to calculate Cumulative Layout Shift (CLS), a common metric for perceived stability.

Browser support

chromeavailable edgeavailable firefoxunavailable safariunavailable
  • Chrome 84 (Jul 27, 2020)
  • Chrome Android 84 (Jul 27, 2020)
  • Edge 84 (Jul 16, 2020)
  • Firefox: not supported
  • Firefox for Android: not supported
  • Safari: not supported
  • Safari on iOS: not supported

Give us feedback

If you're pressed for time, but you want this feature to be available in all browsers, please give this issue a thumbs up 👍 reaction.

However, a much better guide for us is to know how you'd use this feature, and what you're having to do in the meantime. This helps us judge the priority versus other features.

Copy the template below in a comment, and add the details that matter to you.

## What I want to do with this feature

<!-- Add your specific use-cases, even if they seem obvious to you. -->

## What I'm having to do in the meantime

<!--
Are you having to use another feature instead, a polyfill, or is it blocking you completely?
Why are the alternatives worse than using this feature?
-->

All comments are expected to adhere to the Code of Conduct.

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You can learn more about this feature here:

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