Google pagespeed

Time to Interactive (TTI) is one of six metrics tracked in the Performance section of the Lighthouse report. Each metric captures some aspect of page load speed. Measuring TTI is important because some sites optimize content visibility at the expense of interactivity. This can create a frustrating user experience: the site appears to be ready, but when the user tries to interact with it, nothing happens. Lighthouse displays TTI in seconds: TTI measures how long it takes a page to become fully interactive. A page is considered fully interactive when: • The page displays useful content, which is measured by the • Event handlers are registered for most visible page elements, and • The page responds to user interactions within 50 milliseconds. See the One improvement that can have a particularly big effect on TTI is deferring or removing unnecessary JavaScript work. Look for opportunities to These two Diagnostic audits provide additional opportunities to reduce JavaScript work: • • To learn how to measure when TTI actually occurs on your users' devices, see Google's TTI can be difficult to track in the wild. Tracking Unless you have a specific reason for focusing on a particular metric, it's usually better to focus on improving your overall Performance score. Use the Opportunities section of your Lighthouse report to determine which improvements will have the most value for your page. The more significant the opportunity, the greater the effect it will have on your Performance...

Optimized websites score well across hundreds of As a result, they rank higher and always have a competitive advantage. One factor that Google utilizes to determine website rankings is the website’s loading speed. Websites that have longer loading times receive weaker rankings than equivalent websites page load quickly. Google offers Google PageSpeed Insights tool is an online tool that webpage admins can use to learn how Google determines their Users enter the target URL, and Google generates a report that displays an optimization percentage and specific suggestions that can improve the website’s loading time. Who wouldn’t want a Google PageSpeed Insights score that looks like this? The closer to 100% a website earns, the more likely that Google will favor the website in search result rankings. Table of Contents • • • • • • • • • The Importance of Webpage Loading Times Websites that appear on the first page of search results receive far more web traffic than search results on subsequent pages. Since Google factors loading times into their search rankings, focusing on lightweight, quick-loading webpages will increase the chances of a webpage landing on the first page of search results. Sites that consistently appear on the first page of search results had common characteristics: • Rapid loading times • High levels of optimization • Low instances of viewers leaving the website before it finished loading Impatient users may leave a website that does not load According to rec...

Release notes for PageSpeed Insights API and PageSpeed Insights UI Note: The API is versioned as v5, however the Lighthouse version is independent and updated regularly. May 10, 2023 Interaction to Next Paint (INP) is no longer an experimental metric, and is now a For the API specifically, the response now has metric INTERACTION_TO_NEXT_PAINT, which contains the same data as EXPERIMENTAL_INTERACTION_TO_NEXT_PAINT. EXPERIMENTAL_INTERACTION_TO_NEXT_PAINT will be removed from the response in 90 days (August 8, 2023). March 16, 2023 Announcing a new feature in the UI: shareable links! Now, analyzing a URL will take you to a new /analysis path, with a unique identifier in the link. This page contains a shareable snapshot of the report, with a timestamp at the top that denotes the time of analysis. Clicking the "Copy Link" button copies the link to your clipboard, which is shareable for 30 days after creation. Note that the previous /report path will redirect to the analogous /analysis path. March 14, 2023 PageSpeed Insights and the API have been updated from Lighthouse 9.6.x to full-page-screenshot and updated Url properties. The Oct 27, 2022 The UI now has more Lighthouse categories in the lab data section, in addition to Performance. The added categories are Accessibility, Best Practices, and SEO. See May 10, 2022 Introducing two new experimental field metrics to both the API and UI: The UI has a new loading experience as well. Changes include: • Field and lab data load in pa...

As of March 3, 2021, PageSpeed Insights uses http/2 to make network requests, if the server supports it. With this change, network connections are often established quicker. If your page does not support h2, the report will now show an audit that estimates the performance improvement if the page were to support h2. PageSpeed Insights uses simulated CPU and connection throttling to simulate mobile conditions people may experience when they visit your site on a smartphone. Not everyone has a flagship phone (far from it), so PageSpeed Insights slows down its server's CPU speed to simulate the slower CPU speeds of mid- and low-end phones. Likewise, PageSpeed Insights also simulates a 3G connection to account for when people are on the move or out of wifi connection. PageSpeed Insights adds additional latency and slows down up- and download speeds to reflect this type of connection. Yes, click the share button to save your current collection of pages and get a link to share. For privacy and security reasons, all saved and public collections expire and become inaccessible after 90 days. Although page collections are publicly available, they are not disclosed anywhere on this website for privacy reasons. The saved collections contain all the information you see on the screen, but the Lighthouse filmstrips are missing due to the sheer size of this data.

This article contains content that is written like Please help ( March 2022) ( ( Google PageSpeed is a family of tools by PageSpeed Modules [ ] The PageSpeed Modules are the Since PageSpeed module is an The installation can be done in two ways: from packages or build from source on the following supported platforms: • • Ports [ ] Other servers that offer a PageSpeed optimization module based on Google's Page Speed SDK: • • Filters [ ] Pagespeed module filters are settings, based on which a webpage optimization rule is applied. They can be divided into five main categories: • • • • • Stylesheets optimizations [ ] These filters change Filter Name Description Combine CSS If a page requires several Extend Cache for Stylesheets Increases the time that cached Flatten CSS Imports Replaces all “@import” rules with the contents of imported files, if the size of the affected Inline @import To Link Transforms “@import” rules into corresponding “” Inline CSS Inserts small external stylesheet files’ content directly into Inline Google Fonts API CSS Inserts any Move CSS Above Scripts Rearranges the order of loading Move CSS to Head Places stylesheets inclusion before any elements are introduced, which decreases the loading time by eliminating re-flows of a webpage Outline CSS Experimental filter which puts inlined CSS rules on an external resource. The idea behind it is to create parallel connections to different servers rather than consecutive ones to the same host. This filter will t...