awesome-wpo

Web Performance Optimization resource hub

A curated collection of resources and tools for optimizing website performance.

pencil A curated list of Web Performance Optimization. Everyone can contribute here!

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Language: JavaScript
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Awesome WPO / Books
HTTP/2 in Action by Barry Pollard Barry Pollard
Web Performance in Action by Jeremy Wagner Jeremy L. Wagner
Book of Speed Stoyan Stefanov
Designing for Performance: Weighing Aesthetics and Speed Lara Callender Hogan
Even Faster Web Sites: Performance Best Practices for Web Developers Steve Souders
High Performance Browser Networking: What every web developer should know about networking and web performance Ilya Grigorik
High Performance JavaScript Nicholas C. Zakas
High Performance Web Sites: Essential Knowledge for frontend Engineers Steve Souders
High Performance Responsive Design: Building Faster Sites Across Devices – Tom Barker
Lean sites – Barbara Bermes
Time Is Money: The Business Value of Web Performance – Tammy Everts
Using WebPagetest Rick Viscomi, Andy Davies, Marcel Duran
Web Page Size, Speed, and Performance Terrence Dorsey
Web Performance Daybook Volume 2 Stoyan Stefanov
Web Performance Tuning Patrick Killelea
You Don't Know JS: Async & Performance Kyle Simpson
Linux, Apache, MySQL, PHP Performance end-to-end Colin McKinnon
Web Components in Action Ben Farrell
Image Optimization Addy Osmani

Awesome WPO / Case studies
WPOStats Case studies and experiments demonstrating the impact of web performance optimization (WPO) on user experience and business metrics
Google Developers Case Studies Learn why and how other developers have used the web to create amazing web experiences for their users

Awesome WPO / Documentation
Browser Diet A collaborative guide about frontend performance
PageSpeed Insights Rules A guide created by PageSpeed Team. Deprecated. This is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse
Best Practices for Speeding Up Your site The list includes 35 best practices divided into 7 categories, created by Yahoo! Exceptional Performance team

Awesome WPO / Events / Conferences
We Love Speed – We Love Speed ​​was born from the desire to share knowledge and experiences in web performance as widely as possible
PWA Summit – A free, online, single-track conference focused on helping everyone succeed with Progressive Web Apps
Velocity – At Velocity, web operations, performance, and DevOps professionals learn to build fast, resilient, and highly available sites and apps
performance.now() – The performance.now() conference will return to Amsterdam! We're a single-track conference with fourteen world-class speakers, covering today’s most important web performance insights
#PerfMatters – #PerfMatters Conference is the ONLINE web performance conference by internationally renowned performance developers

Tools / Analyzers
Web.dev Get the web's modern capabilities on your own sites and apps with useful guidance and analysis from web.dev
Confess 874 over 8 years ago Uses PhantomJS to headlessly analyze web pages and generate manifests
DebugBear DebugBear is a site monitoring tool based on Lighthouse. See how your scores and metrics changed over time, with a focus on understanding what caused each change. DebugBear is a paid product with a free 30-day trial
Page Speed The PageSpeed family of tools is designed to help you optimize the performance of your site. PageSpeed Insights products will help you identify performance best practices that can be applied to your site, and PageSpeed optimization tools can help you automate the process
Lighthouse 28,401 6 days ago Auditing and performance metrics tool for Progressive Web Applications
Screpy AI-Based SEO Analysis & Monitoring Tool
YSlow 2,204 almost 2 years ago YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high-performance web pages
YSlow for PhantomJS YSlow for PhantomJS also introduces new output formats for automated test frameworks: TAP (Test Anything Protocol) and JUnit
Grunt-WebPageTest 35 about 6 years ago Grunt plugin for continuous measurement of WebPageTest. ( )
Grunt-yslow 91 over 7 years ago Grunt task for testing page performance using PhantomJS, a headless WebKit browser
Grunt-perfbudget 856 8 months ago A Grunt.js task for enforcing a performance budget ( )
Web Tracing Framework 2,646 almost 5 years ago Web Tracing Framework is a set of libraries, tools, and visualizers for the tracing and investigation of complex web applications
Yandex.Tank 2,460 8 days ago An extensible open-source load testing tool for advanced Linux users which is especially good as a part of an automated load testing suite
Yellow Lab Tools Online quick and easy tool that audits frontend bad practices, reveals performance issues, and profiles JavaScript
Pagelocity A web performance optimization and analysis tool
Varvy Test your site to see if it follows the Google guidelines for speed
Web Bloat Score Calculator Compare size of a page to a compressed image of the same page
Speed Racer 1,865 over 2 years ago Collect performance metrics for your library/application using Chrome headless
Speedrank Speedrank monitors the performance of your site in the background. It displays Lighthouse reports over time and delivers recommendations for improvement. Speedrank is a paid product with 14-day-trial
Lightest App Webpage load time is extremely important for conversion and revenue. Visualize web performance against competitors

Tools / Analyzers - API
Node-yslowjs 9 almost 9 years ago YSlow.js on Node.js is a simple Node.js wrapper for programmatically running phantomjs yslow.js
PSI 3,104 over 3 years ago PageSpeed Insights for Node.js - with reporting

Application Performance Monitoring
Datadog APM End-to-end distributed tracing and APM at scale, correlated to all telemetry
BetterUptime A good website monitoring tool (bundling status page, incident notification)
Pingdom A tool to get the uptime of your website (with probes from different locations)
UptimeRobot Another uptime monitoring tool (with a generous free plan)
RoboMiri RoboMiri is a stable Uptime Monitor that offers a wide range of monitors: cronjob, keyword, website, port, ping. 25 uptime checks with 3 minutes interval checks for free. Alerts via Phone Call, SMS, Email, and WebHook
StatusList Uptime, performance monitoring with debug details, and hosted status page in one simple dashboard

Application Performance Monitoring / Bundle Analyzer
Bundlesize 4,473 2 months ago Keep your bundle size in check
source-map-explorer 3,834 over 1 year ago Analyze and debug bundle space usage through source maps
Bundlephobia Helps you find the performance impact of adding an npm package to your frontend bundle
Webpack bundle analyzer 12,588 23 days ago webpack plugin and CLI utility that represents bundle content as a convenient interactive zoomable treemap
Disc Visualise the module tree of browserify project bundles and track down bloat
Lasso-analyzer 4 over 3 years ago analyze and Visualise project bundles created by Lasso
Packtracker.io Check your webpack bundle stats on every pull request, and track them over time
Compression webpack plugin 1,413 23 days ago Prepare compressed versions of assets to serve them with Content-Encoding
BundleStats 570 4 days ago Generate bundle report(bundle size, assets, modules, packages) and compare the results between different builds

Application Performance Monitoring / Benchmark - CSS
CSS-perf 573 over 7 years ago Completely unscientific way of testing CSS performance. Most of these tests will revolve around methodologies and techniques for determining effective CSS architecture. Put another way, I want to know what works best given a particular comparison of CSS strategies

Application Performance Monitoring / Benchmark - JavaScript
JSPerf jsPerf aims to provide an easy way to create and share test cases, comparing the performance of different JavaScript snippets by running benchmarks
Benchmark.js A robust benchmarking library that works on nearly all JavaScript platforms, supports high-resolution timers, and returns statistically significant results
JSlitmus 168 about 14 years ago JSLitmus is a lightweight tool for creating ad-hoc JavaScript benchmark tests
Matcha 563 about 4 years ago Matcha allows you to design experiments that will measure the performance of your code. It is recommended that each bench focus on a specific point of impact in your application
Timing.js 1,495 over 4 years ago Timing.js is a small set of helpers for working with the Navigation Timing API to identify where your application is spending its time. Useful as a standalone script, DevTools Snippet, or bookmarklet
Stats.js 8,732 about 1 month ago This class provides a simple info box that will help you monitor your code performance
PerfTests 1 over 9 years ago Performance tests of JavaScript inheritance models
Memory-stats.js 2,096 over 9 years ago minimal monitor for JS Heap Size via performance memory

Application Performance Monitoring / Benchmark - PHP
PHPench 53 about 5 years ago PHPench creates a graphical output for a PHP benchmark. Plot the runtime of any function in realtime with GnuPlot and create an image out of the result
php-bench 13 almost 10 years ago Benchmark and profile PHP code blocks whilst measuring the performance footprint

Application Performance Monitoring / Bookmarklets
Yahoo YSlow for Mobile/Bookmarklet YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high-performance web pages
PerfMap 3,792 over 7 years ago A bookmarklet to create a frontend performance heatmap of resources loaded in the browser using the Resource Timing API
DOM Monster 561 over 2 years ago A cross-platform, cross-browser bookmarklet that will analyze the DOM & other features of the page you're on, and give you its bill of health
CSS Stress CSS Stress is a Testing and Performance Profiling
Performance-Bookmarklet 1,141 over 1 year ago Analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - Sort of a light live WebPageTest. As and under the name Performance-Analyser

Application Performance Monitoring / CDN
Cloudflare CDN A content delivery network that uses next-gen tech to deliver fast, reliable, CDN services
PageCDN A state-of-the-art opensource CDN with aggressive content optimization using brotli-11 compression, HTTP/2 server push, better HTTP/2 multiplexing, and more. Supports 100s of libraries and 2000+ WordPress themes already. Easy to use, easy to link, and very fast
jsDelivr 5,660 5 months ago Similar to Google Hosted Libraries, jsDelivr is an open-source CDN that allows developers to host their own projects and anyone to link to our hosted files on their sites
Google Hosted Libraries Google Hosted Libraries is a content distribution network for the most popular, open-source JavaScript libraries
CDNjs An open-source CDN for JavaScript and CSS sponsored by CloudFlare that hosts everything from jQuery and Modernizr to Bootstrap
Amazon CloudFront A content delivery network by Amazon that integrates nicely with other Amazon services or can be used standalone
jQuery jQuery CDN – Latest Stable Versions, powered by MaxCDN
UpYun CDN CDN provided by upyun
Bootstrap 中文网开放 CDN 服务 Bootstrap Chinese net open CDN service (only HTTP)
Yandex CDN Yandex Content Delivery Network hosts popular third-party JavaScript and CSS libraries (best for use in Russia)

Application Performance Monitoring / CDN - Monitor
CDNperf finds you fast and reliable JavaScript CDNs that make your sites snappy and happy

Application Performance Monitoring / CDN - Utilities
Gulp-google-cdn 82 almost 4 years ago Replaces script references with Google CDN ones

Application Performance Monitoring / Extensions
Browser Calories 131 over 8 years ago The easiest way to measure your performance budget

Application Performance Monitoring / Generators
AtBuild 35 almost 4 years ago JavaScript code generation tool that lets you write JavaScript that outputs JavaScript. Good for unrolling loops and writing libraries that compile away the runtime
Glue 2,552 almost 2 years ago Glue is a simple command-line tool to generate sprites:
Pitomba-spriter 19 about 10 years ago Spriter is a simple and flexible dynamic sprite generator for CSS, using Python. It can process CSS both synchronous and asynchronous as it provides classes to be used in your Python code and also a watcher that listens to your filesystem and changes CSS and sprite as soon as a static is changed
Grunt-spritesmith 1,136 over 2 years ago Grunt task for converting a set of images into a sprite sheet and corresponding CSS variables
Grunt-sprite-css-replace Grunt task that generates a sprite from images referenced in a style sheet and then updates the references with the new sprite image and positions
Grunt-svg-sprite SVG sprites & stacks galore — Grunt plugin wrapping around svg-sprite that reads in a bunch of SVG files, optimizes them and creates SVG sprites and CSS resources in various flavors
Gulp-sprite 15 about 9 years ago gulp task for creating an image sprite and the corresponding style sheets for Gulp
Gulp-svg-sprites 334 over 3 years ago gulp task for creating SVG sprites
SvgToCSS 2 over 8 years ago Optimizes and renders SVG files in CSS / Sass sprites
Assetgraph-sprite 36 13 days ago Assetgraph transform for auto-generating sprites based on the CSS dependency graph
Sprite Cow Sprite Cow helps you get the background-position, width, and height of sprites within a spritesheet as a nice bit of copyable CSS
ZeroSprites ZeroSprites is a CSS sprites generator aimed at area minimization using algorithms used in the field of VLSI floorplanning
CSS Sprite Generator CSS sprites allow you to combine multiple images into a single file
Sprity 481 almost 3 years ago A modular image sprite generator with a lot of features: supports retina sprites, supports different output formats, generates sprites and proper style files out of a directory of images, etc
Sprite Factory 621 9 months ago The sprite factory is a ruby library that can be used to generate CSS sprites. It combines individual image files from a directory into a single unified sprite image and creates an appropriate CSS style sheet for use in your web application

Application Performance Monitoring / Image Optimizers
Shortpixel Compress Your Image by removing unnecessary bytes of the image and Convert it into WebP/AVIF
Grunt-smushit 83 over 8 years ago Grunt plugin to remove unnecessary bytes of PNG and JPG using Yahoo Smushit
Gulp-smushit 33 over 6 years ago Gulp plugin to optimize PNG and JPG using Yahoo Smushit. Made on top of smosh
Smush it Smush it uses optimization techniques specific to image format to remove unnecessary bytes from image files. It is a "lossless" tool, which means it optimizes the images without changing their look or visual quality
Imagemin 5,577 2 months ago Minify images seamlessly with Node.js
Sharp 29,275 17 days ago The typical use case for this high-speed Node.js module is to convert large images of many formats to smaller, web-friendly JPEG, PNG, and WebP images of varying dimensions
Gm 6,956 11 months ago GraphicsMagick and ImageMagick for Node.js
Exexif 12,681 2 months ago Pure elixir library to extract tiff and exif metadata from JPEG files
ExifCleaner GUI app to remove EXIF metadata from images and video files with drag and drop. Free and open source
OptiPNG OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information
Grunt-contrib-imagemin 1,213 5 months ago Minify PNG and JPEG images for Grunt
Gulp-imagemin 1,903 7 months ago Minify PNG, JPEG, GIF and SVG images with imagemin for Gulp
Grunt-WebP 118 over 8 years ago Convert your images to WebP format
Gulp-WebP 220 about 1 year ago Convert images to WebP for Gulp
Imageoptim Free app that makes images take up less disk space and load faster, without sacrificing quality. It optimizes compression parameters, and removes junk metadata and unnecessary color profiles
Grunt-imageoptim 479 over 5 years ago Make ImageOptim, ImageAlpha, and JPEGmini part of your automated build process
ImageOptim-CLI 3,455 2 months ago Automates ImageOptim, ImageAlpha, and JPEGmini for Mac to make batch optimization of images part of your automated build process
Tapnesh-CLI 21 over 4 years ago Tapnesh is a CLI tool that will optimize all your images in parallel easily and efficiently!
Tinypng Advanced lossy compression for PNG images that preserves full alpha transparency
Kraken Web-interface Optimize your images and will be available for download for 12 hours
Compressor Online image compressor for JPG, PNG, SVG and GIF
Shrinkray One-click optimization for images in your GitHub repos
mozjpeg 5,475 4 months ago Improved JPEG encoder
Jpegoptim 1,591 4 months ago Utility to optimize/compress JPEG files
ZopfliPNG 3,429 3 months ago A command-line program to optimize PNG images
AdvPNG Recompress PNG files to get the smallest possible size
Leanify 831 7 months ago Lightweight lossless file minifier/optimizer
Trimage A cross-platform tool for losslessly optimizing PNG and JPG files
ImageEngine Cloud service for optimizing, resizing and caching images on the fly with great mobile support
ImageKit.io Intelligent real-time image optimizations, image transformations with a global delivery network and storage
Optimizt 938 about 1 year ago CLI image optimization tool. It can compress PNG, JPEG, GIF and SVG lossy and lossless and create WebP versions for raster images

Application Performance Monitoring / Lazyloaders
lazyload 938 almost 4 years ago Lazyload images, iframes, widgets with a standalone JavaScript lazyloader ~1kb
lozad.js 7,455 6 months ago Highly performant, light ~0.9kb, and configurable lazy loader in pure JS with no dependencies for responsive images, iframes, and more

Application Performance Monitoring / Loaders
HeadJS 4,157 over 1 year ago The only script in your HEAD. for Responsive Design, Feature Detections, and Resource Loading
RequireJS RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino and Node.js
Labjs is an open-source (MIT license) project supported by Getify Solutions. The core purpose of LABjs is to be an all-purpose, on-demand JavaScript loader, capable of loading any JavaScript resource, from any location, into any page, at any time
Defer.js 69 over 11 years ago Async Everything: Make the meat of your pages load faster with this JS morsel
InstantClick 5,513 over 6 years ago InstantClick makes the following links in your site instant
JIT 509 over 6 years ago A JIT (Just In Time) plugin loader for Grunt. The load time of Grunt does not slow down even if there are many plugins

Application Performance Monitoring / Metrics Monitor
Phantomas 2,258 7 days ago PhantomJS-based web performance metrics collector and monitoring tool
Showslow open source tool that helps monitor various site performance metrics over time. It captures the results of YSlow, Page Speed Insights, WebPageTest and dynaTrace Ajax Edition
Bench 25 about 9 years ago Using Phantomas (a PhantomJS-backed client performance metrics scrapper). Benchmark a page, store results in MongoDB, and display results via the built-in server
Keepfast 104 over 6 years ago Tool to monitor indicators related to the performance of a web page
GTmetrix GTmetrix uses Google Page Speed and Yahoo! YSlow to grade your site's performance and provides actionable recommendations to fix these issues
Pingbreak.com Free site and SSL Monitoring with response time alerting (on Slack, Twitter, Mattermost, Discord or custom Webhook)
Pingdom site Speed Test Test the load time of that page, analyze it, and find bottlenecks
Dotcom-tools analyze your website's speed in real browsers from 20 locations worldwide
WebPageTest Run a free site speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds. You can run simple tests or perform advanced testing including multi-step transactions, video capture, content blocking and much more. Your results will provide rich diagnostic information including resource-loading waterfall charts, Page Speed optimization checks and suggestions for improvements
Sitespeed.io Sitespeed.io is an open-source tool that will check your site against web performance best practice rules and use the Navigation Timing API to collect metrics. It will create XML & HTML output of the result
Grunt-phantomas 285 almost 8 years ago Grunt plugin wrapping phantomas to measure frontend performance
Perfjankie Runtime Browser Performance regression suite ( )
BrowserView Monitoring Continually checks web page load times in Internet Explorer, Chrome and Firefox from multiple points around the world
New Relic Browser Monitoring Monitor your browser-side applications in real time, with a focus on real end users’ experiences
DareBoost Real Browser Monitoring. Offers complete reports about web performance and quality using YSlow, Page Speed and numerous custom tips
Bytes Matter Real User Monitoring Full featured Real User Monitoring solution. Free tier for smaller sites. Includes monitoring for Google's Core Web Vitals

Application Performance Monitoring / Metrics Monitor - API
WebPageTest API Wrapper for Node.js 1,640 16 days ago WebPageTest API Wrapper is an npm package that wraps WebPageTest API for Node.js as a module and a command-line tool

Application Performance Monitoring / Metrics Monitor - EMAIL
WebPerformance Report Web performance report every week in your inbox. Get a Personalized Report on the Status of the E-commerce or Website that you want to monitor in terms of Web performance and Web optimization, Core Web Vitals are included

Application Performance Monitoring / Minifiers - HTML
HTMLCompressor HtmlCompressor is a small, fast, and very easy to use Java library that minifies given HTML or XML source by removing extra whitespaces, comments, and other unneeded characters without breaking the content structure. As a result page become smaller in size and load faster. A command-line version of the compressor is also available
Django-htmlmin 542 almost 2 years ago django-html in an HTML minifier for Python with full support for HTML 5. It supports Django, Flask and any other Python web framework. It also provides a command-line tool that can be used for static sites or deployment scripts
HTMLMinifier 4,942 7 months ago HTMLMinifier is a highly configurable, well-tested, Javascript-based HTML minifier, with lint-like capabilities
Grunt-contrib-htmlmin 425 5 months ago A grunt plugin to minify HTML that uses HTMLMinifier
Gulp-htmlmin 727 about 5 years ago A gulp plugin to minify HTML that uses HTMLMinifier
Grunt-htmlcompressor 35 10 months ago Grunt plugin for HTML compression, using htmlcompressor
HTML_minifier 12 over 8 years ago Ruby wrapper for kangax html-minifier
HTML_press 35 over 8 years ago Ruby gem for compressing html, that removes all whitespace junk, and leaves only HTML
Koa HTML Minifier 31 over 1 year ago Middleware that minifies your HTML responses using html-minifier. It uses html-minifier's default options which are all turned off by default, so you have to set the options otherwise it's not going to do anything
HTML Minifier Online A HTML min tool by kangax (HTMLMinifier Creator)
Minimize 162 over 4 years ago Minimize is an HTML minifier based on the node-htmlparser,currently, HTML minifier is only usable server-side. Client-side minification will be added in a future release
Html-minifier 134 2 months ago A simple Windows command-line tool to minify your HTML, Razor views & Web Forms views

Application Performance Monitoring / Minifiers - JS & CSS
YUI Compressor 3,014 about 3 years ago JavaScript compressor which, in addition to removing comments and white-spaces, obfuscates local variables using the smallest possible variable name. This obfuscation is safe, even when using constructs such as 'eval' or 'with' (although the compression is not optimal is those cases) Compared to jsmin, the average savings is around 20%
UglifyJS2 13,164 5 days ago UglifyJS is a JavaScript parser, minifier, compressor or beautifier toolkit, written in JavaScript
CSSO 3,762 5 months ago CSS minimizer unlike others. In addition to usual minification techniques, it can perform structural optimization of CSS files, resulting in smaller file size compared to other minifiers
CSSmin.js 76 about 13 years ago cssmin.js is a JavaScript port of YUICompressor's CSS minifier
Grunt-contrib-concat 812 5 months ago A Grunt plugin to concatenate files
Grunt-contrib-uglify 1,482 5 months ago A Grunt plugin to concatenate and minify JavaScript files
Clean-css 4,166 about 1 month ago A fast, efficient, and well-tested CSS minifier for node.js
Django-compressor 2,802 about 1 month ago Compresses linked and inline JavaScript or CSS into a single cached file
Django-pipeline 1,517 25 days ago Pipeline is an asset packaging library for Django, providing both CSS and JavaScript concatenation and compression, built-in JavaScript template support, and optional data-URI image and font embedding
JShrink 749 11 months ago JShrink is a PHP class that minifies JavaScript so that it can be delivered to the client quicker
JSCompress The most minimalistic online JS Compress tool
CSSshrink 1,054 about 7 years ago Because CSS is ospon the critical path to rendering pages. It must be small! Or else!
Grunt-cssshrink 28 almost 9 years ago This is just a grunt wrapper for CSS Shrink
Gulp-cssshrink 22 over 8 years ago Shrinks CSS files using cssshrink for Gulp
Prettyugly 6 over 10 years ago Uglify (strip spaces) or prettify (add consistent spaces) CSS code
Grunt-contrib-cssmin 793 5 months ago CSS Minifier for Grunt
Grunt-uncss 3,825 over 1 year ago A grunt task for removing unused CSS from your projects
Gulp-uncss 938 over 7 years ago A gulp task for removing unused CSS from your projects

Application Performance Monitoring / Miscellaneous
Socialite.js Socialite provides a very easy way to implement and activate a plethora of social sharing buttons — any time you wish. On document load, on article hover, on any event
uCSS 1,620 almost 8 years ago uCSS is made for crawling (large) sites to find unused CSS selectors, but not remove unused CSS
HTTPinvoke 344 almost 9 years ago A no-dependencies HTTP client library for browsers and Node.js with a promise-based or Node.js-style callback-based API to progress events, text, and binary file upload and download, partial response body, request and response headers, status code
Critical 10,036 about 2 months ago Extract & Inline Critical-path CSS in HTML pages (alpha)
Csscolormin 12 almost 6 years ago Utility that minifies CSS colors, example: min("white"); // minifies to "#fff"
Lazysizes 17,543 8 months ago High-performance lazy loader for images (responsive and normal), iframes, and scripts, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration
Perf-Tooling Perf Tooling is a shared resource to keep track of new and existing performance tools
TMI 1,634 almost 8 years ago TMI (Too Many Images) - discover your image weight on the web

Application Performance Monitoring / SVG
SVGO 21,020 about 1 month ago SVGO is a Nodejs-based tool for optimizing SVG vector graphics files
SVG OMG SVGOMG is SVGO's Missing GUI, aiming to expose the majority, if not all the configuration options of SVGO
Grunt-svgmin 433 about 1 year ago Minify SVG using SVGO for Grunt
Gulp-svgmin Minify SVG with SVGO for Gulp
Scour Scour is an open-source Python script that aggressively cleans SVG files, removing a lot of 'cruft' that certain tools or authors embed into their documents
SVG Cleaner 1,628 about 3 years ago SVG Cleaner could help you to clean up your SVG files from unnecessary data. It has a lot of options for cleanup and optimization, works in batch mode, and provides threaded processing on multicore processors

Application Performance Monitoring / Web Components
Polymer Bundler 430 5 days ago Polymer-bundler is a library for packaging project assets for production to minimize network round-trips
Gulp-vulcanize 100 almost 4 years ago Concatenate a set of Web Components into one file that use Vulcanize

Application Performance Monitoring / Web server Benchmarks
HTTPerf 991 over 2 years ago httperf is a tool for measuring web server performance. It provides a flexible facility for generating various HTTP workloads and for measuring server performance
Apache JMeter Open source load testing tool: It is a Java platform application
Locust An open-source load testing tool. Define user behaviour with Python code, and swarm your system with millions of simultaneous users
Autoperf 179 about 10 years ago Autoperf is a ruby driver for httperf, designed to help you automate load and performance testing of any web application - for a single endpoint, or through log replay
HTTPerf.rb 13 almost 4 years ago Simple Ruby interface for httperf, written in Ruby
PHP-httperf 5 over 10 years ago PHP Port of HTTPerf.rb
HTTPerf.js 25 over 10 years ago JS Port of HTTPerf.rb
HTTPerf.py 11 almost 10 years ago Python Port of HTTPerf.rb
Gohttperf 5 over 9 years ago Go Port of HTTPerf.rb
wrk 38,001 11 months ago A HTTP benchmarking tool (with optional Lua scripting for request generation, response processing, and custom reporting)
beeswithmachineguns 6,448 8 months ago A utility for arming (creating) many bees (micro EC2 instances) to attack (load test) targets (web applications)
k6 An open-source load testing tool built for developers. Easy to integrate into CI pipelines. Tests are written in ES6 JS and you can test APIs, microservices and sites using HTTP/1.1, HTTP/2 and WebSocket

Application Performance Monitoring / Web server Modules
PageSpeed Module PageSpeed speeds up your site and reduces page load time. This open-source web server module automatically applies web performance best practices to pages and associated assets (CSS, JavaScript, images) without requiring that you modify your existing content or workflow. PageSpeed is available as a module for Apache 2.x and Nginx 1.x
WebP-detect 242 about 6 years ago WebP with Accept negotiation

Specs
Web Performance Working Group The mission of the Web Performance Working Group, part of the Rich Web Client Activity, is to provide methods to measure aspects of application performance of user agent features and APIs
Page Visibility This specification defines a means for site developers to programmatically determine the current visibility state of the page in order to develop power and CPU-efficient web applications
Navigation Timing This specification defines a unified interface to store and retrieve high resolution performance metric data related to the navigation of a document
Resource Timing This specification defines an interface for web applications to access the complete timing information for resources in a document
User Timing This specification defines an interface to help web developers measure the performance of their applications by giving them access to high-precision timestamps
Performance Timeline This specification defines a unified interface to store and retrieve performance metric data. This specification does not cover individual performance metric interfaces
CSS will-change This specification defines the CSS property which allows an author to declare ahead-of-time what properties are likely to change in the future, so the UA can set up the appropriate optimizations some time before they’re needed. This way, when the actual change happens, the page updates in a snappy manner
Resource Hints This specification defines the dns-prefetch, preconnect, prefetch, and prerender relationships of the HTML Link Element (<link>). These primitives enable the developer, and the server generating or delivering the resources, to assist the user agent in the decision process of which origins it should connect to, and which resources it should fetch and preprocess to improve page performance

Stats
HTTP Archive It's a permanent repository of web performance information such as size of pages, failed requests, and technologies utilized. This performance information allows us to see trends in how the Web is built and provides a common data set from which to conduct web performance research

Other Awesome Lists
iamakulov/awesome-webpack-perf 958 over 3 years ago A curated list of webpack tools for web performance
bayandin/awesome-awesomeness 32,092 6 months ago
sindresorhus/awesome 333,816 23 days ago
imteekay/web-performance-research 800 15 days ago Research in Web Performance

Backlinks from these awesome lists:

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