How Do I Minimize Main Thread Work?

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Main thread work is any work that takes longer than a few milliseconds to complete. These are usually CPU-intensive tasks that cause a frame or animation on the webpage to lag. It’s always best to minimize and reduce main thread work because it can affect the user-experience of your website and app by decreasing the …

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What Is FID (First Input Delay)?

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First Input Delay (FID) is a metric, from Google, coming into force in May 2021 as part of the Page Experience Update. The metric will measure the time it takes from the user presses a key on their device and when the keystroke is registered in a browser. FID is part of Google’s efforts to …

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Optimizing JavaScript With Developers Using The PRI

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The Priority index rating (PRI) is used by developers to decide whether an asset should be deferred or inlined. Coupled with a ticket prioritization system, the PRI offers SEOs an opportunity to better engage with developers when it comes to optimizing JavaScript on a client’s website, and in theory with better collaboration will yield better …

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Improving Total Blocking Time

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TBT (total blocking time) is a metric found when optimising page load speeds. The TBT for a given page is calculated by adding up the time that is spent blocked (waiting for the network to catch up before proceeding) and the time that is spent loading. A TBT score of 0 means that there was …

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Ways Search Engines (May) Use Entities

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Entities are search engine-relevant data points about a subject. They can be individuals, places, events, or objects. Examples: [Beth] is an entity; [Samsung] is an entity; [Taiwan earthquake] is an entity; [From Russia with love] is an entity. Entities are important to SEO for a number of reasons, and search engines may use them in …

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