PageSpeed Insights
PageSpeed Insights (formerly Google PageSpeed ) is an online service provided by Google to examine and, if necessary, optimize the loading time of a website . In addition to the structure of HTML, CSS and JavaScript files, PageSpeed Insights also takes into account the integration of images without interlacing or the website's cache requirements. In addition to an online service, Google offers an extension for the Apache HTTP Server and Nginx and, under the name Lighthouse, also a browser plug-in and an audit tool developed in Google Chrome .
PageSpeed was first introduced in 2011 at the Google I / O technology conference . In July 2011, a hosting offer called Google Page Speed Service was also introduced. Over the years, Google has provided a variety of tools to measure and optimize load time. In addition to PageSpeed Insights and the Chrome DevTools, there is also Google Lighthouse. To create a standardization here, Google launched the Web Vitals Initiative, which uses 3 key metrics for the user experience: loading time, interactivity and visual stability. There is a key figure for each of the three aspects. These are Largest Contentful Paint (LCP), First Input Delay (FID) and Cumulative Layout Shift (CLS).
Websites: online service
Google PageSpeed Insights can be accessed directly in the browser. The visitor only has to enter the URL of a website. Typically, PageSpeed will show a report in less than two minutes, broken down into high, medium, and low priority categories. PageSpeed calculates a total value for each page that can reach a maximum of 100 points. Separate reports are issued for the mobile and desktop versions of the website. It is not only important to optimize the loading times of images, CSS and JavaScript files, but also to test various caching functions in order to present the visitor with a fast-loading website. Tips, hints, tutorials and lots of code snippets can be helpful.
Other call options
The analysis tool is integrated into the developer tools of Google Chrome under the name Lighthouse. A separate browser plug-in for Chrome is also offered. Alternatively, an API is available through which Page Speed Insights queries are carried out automatically and the results are returned in machine-readable form and which can also be accessed by plugins.
Web server
At the Google I / O 2011, mod_pagespeed was shown for the first time, which is supposed to automatically improve the loading time of a website. The optimization suggestions that Google Page Speed Online or the browser plug-in make to a webmaster are mostly implemented automatically. Since July 2011 there is also a hosted version called Google Page Speed Service, with which no intervention in the server configuration is necessary. Instead, Google delivers the website via its own data centers, where the speed optimization takes place. The offer was partly criticized in the media as an attack on the independence of webmasters.
Web links
Individual evidence
- ↑ Netzwelt.de: Faster surfing with Google Page Speed , accessed on July 30, 2011
- ^ Web Vitals. Retrieved May 10, 2020 (English).
- ↑ Page-Speed.ent: Page Speed Tips , accessed on July 4, 2012
- ↑ Google Page Speed Insights API
- ↑ Spiegel Online: Google lures webmasters with short loading times , accessed on July 30, 2011