Optimization measures include

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Compress CSS & JavaScript, remove unnecessary
Compress images & upload to required size
Use page caching & cache preloading
2. First Input Delay (FID)
Measures the time during page loading until users can interact with the page (click buttons, etc.)

Optimization measures include:

Split long tasksAvoid excessive DOM sizeUse a slim philippines cell phone number list WordPress theme3. Cumulative Layout ShiftShows how much the page layout shifts during page loading, e.g. buttons that change position or slip during page loading.Optimization measures include:Add width and height to imagesAvoid Flash of Unstyled TextAvoid Flash of Invisible Text
Learn more about the Page Experience Update on the Google Webmaster Central blog. Blogmojo provides a detailed checklist for optimizing your Core Web Vitals.
The Payday Update represents an anomaly. The Payday or Payday Loan Update is not the classic Google update that, for example, penalizes pages with purchased links in the rankings.

Rather, this June 2013 update is Google's response to spammy content that uses illegal black hat SEO tactics to gain multiple clicks, for example, by advertising large "paydays." The update therefore affects not individual pages, but entire markets characterized by high spam volumes.