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An In-Depth Guide To Measuring Core Web Vitals

Smashing Magazine

Google uses anonymized data from Chrome users to feedback metrics and makes these available in the Chrome User Experience Report (CrUX). CrUX data is available in a number of tools, including in Google Search Console for your site. CrUX is also available as a free API to get more precise figures for those percentages.

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Front-End Performance Checklist 2021

Smashing Magazine

Usually, the most specific and relevant ones are: Time to Interactive (TTI) The point at which layout has stabilized , key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Image source ). Large preview ).

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Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]

Smashing Magazine

Usually, the most specific and relevant ones are: Time to Interactive (TTI) The point at which layout has stabilized, key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Image source ). Getting started with Webpack can be tough though.

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Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]

Smashing Magazine

Time to Interactive (TTI) The point at which layout has stabilized, key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Long FMP usually indicates JavaScript blocking the main thread, but could be related to back-end/server issues as well.