LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain "vanilla" JavaScript, it leve
Throttle your connection
Xray your HAR file and know all about the page
sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.
Core package for the Coach.
Browser instrumentation helper that makes it easier to capture UX speed metrics
The coach gives you advice on building a better web page
Analyze the web performance of your site using Gulp
LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain "vanilla" JavaScript, it leve
Convert blurhash strings to CSS objects
Analyze the web performance of your site using Grunt
PSI report
Performance measurment plugin for gulp based on Phantomas
Convert your HAR file to a summary of a page
Google PageSpeed score command line toolkit
Analyze the web performance of your site
A thin wrapper for the WebPageTest API that report specific metrics as csv/json or send them to Graphite/Statsv
Browser instrumentation helper that makes it easier to capture UX speed metrics
Easy performance improvements
The coach gives you advice on building a better web page,this version's advice is in Chinese