JSPM

Create HAR files from Chrome Debugging Protocol data.

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.

Xray your HAR file and know all about the page

Throttle your connection

CSS selectors complexity and performance analyzer

A SVG-based LQIP image placeholder generator

Imagemin meets Rollup!

Package with the lighthouse-viewer files from the official repositories of Lighthouse

Page not found plugin for sitespeed.io

HTML plugin for sitespeed.io

Accessibility statement plugin for sitespeed.io

Lighthouse plugin for sitespeed.io

Javascript plugin for sitespeed.io

WebPerf plugin for sitespeed.io

Headless Chromium-based web performance metrics collector and monitoring tool

This component is a React wrapper for the lighthouse-viewer. It depends on [lighthouse-viewer](../lighthouse-viewer), package that exports the original lighthouse-viewer from Google as an ES modules package.

Cascading Style Sheets plugin for sitespeed.io

This component is a Svelte wrapper for the lighthouse-viewer. It depends on [lighthouse-viewer](../lighthouse-viewer), package that exports the original lighthouse-viewer from Google as an ES modules package.

Gulp plugin to optimize PNG and JPG using reSmush.it

A tool that audits a webpage for performance and front-end quality issues

A Vue.js component for viewing Lighthouse reports

Analyzes an image and detects potential improvements for a webpage

A Vue 3 component for viewing Lighthouse reports

InfluxDB plugin for sitespeed.io

Convert blurhash strings to CSS objects

Grunt plugin to remove unnecessary bytes of PNG and JPG using Yahoo Smushit

Measure browser rendering performance metrics

Create HAR files from Chrome Debugging Protocol data.

The coach gives you advice on building a better web page

Analyze the web performance of your site using Grunt

Analyze the web performance of your site using Gulp

Monitor your asset size over time, in your browser, or using the provided HTTP API.

A prognosticating client-side DNS prefetcher for outbound links.

web performance analyze tool base on remote debugging protocol,fex

A grunt kitchen that reduces your web ingredients down to their essence for optimal serving. Bon appétit

Convert your HAR file to a summary of a page

A nano-sized `preconnect` hint wrapper.

Analyze the web performance of your site

The sitespeed.io server

Browser instrumentation helper that makes it easier to capture UX speed metrics

From a Chrome Dev Tools recorded timeline saved as JSON, this will help you identify quickly wich domain name eats most of the CPU

Find multiple concurrent <script> or <link> tags and turn 'em into single, combo-handled tags

Analyze the web performance of your site

前端性能监控,采集以及上报。用于测量第一个dom生成的时间(FP/FCP/LCP)、用户最早可操作时间（fid|tti）和组件的生命周期性能,，网络状况以及资源大小等等。向监控后台报告实际用户测量值。

This component is a React wrapper for the lighthouse-viewer. It depends on [lighthouse-viewer](../lighthouse-viewer), package that exports the original lighthouse-viewer from Google as an ES modules package.

PSI report

GPSI plugin for sitespeed.io

A test runner for sitespeed.io server.

Performance budget plugin for Webpack

CSS Selector Scene Investigation. Analyses a git codebase for unused CSS selectors against a given CSS files set

A JavaScript library for measuring FCP, LCP. Report real user measurements to tracking tool.

Mesure scripts parse and execution time with this simple browser proxy

Browser instrumentation helper that makes it easier to capture UX speed metrics

Analyze the web performance of your site

Analyze the web performance of your site

JavaScript library that measures First (Contentful) Paint (FP/FCP) and First Input Delay (FID). Annotates components’ performance for Vanilla and Angular applications, into the DevTools timeline. Reports all the results to Google Analytics or your favorit

Measure browser rendering performance metrics

web performance analyze tool base on remote debugging protocol,fex

Web Performance Command Line Tools

CLI tool and lib to gather performance metrics

Discover the percent of unused JS on a page with this simple browser proxy

Third party web content database

PhantomJS-based web performance metrics collector

Browser instrumentation helper that makes it easier to capture UX speed metrics

Node module to optimize and compress PNG, JPG, Gif images using CheetahO compression algorithms

Unofficial Node.js client for the WebPageTest REST API

This is a fork of sitespeedio/coach. The coach gives you advice on building a better web page

A browser cache that only downloads the diff of modified files

Compare HAR files.

atf (above-the-fold) prints out above-the-fold css for whatever site you want.

A beautifully simple CLI for running Lighthouse audits on a statically generated (SSG) website

Create HAR files from Chrome Debugging Protocol data.

PageSpeed Green official Command Line Client (CLI)

elasticsearch reporter for phantomas

phantomas reportrer for AWS Cloudwatch

Enable to call sitespeed.io with an API Rest

phantomas reporter for zabbix (zabbix_sender)

Create HAR files from Chrome Debugging Protocol data.

build tool agnostic perfromance and benchmarking tool

The coach gives you advice on building a better web page,this version's advice is in Chinese

Create HAR files from Chrome Debugging Protocol data.

A thin wrapper for the WebPageTest API that report specific metrics as csv/json or send them to Graphite/Statsv