JSPM

Extract the minimal CSS used in a set of URLs with puppeteer

Holy Loader is a lightweight, customizable top-loading progress bar component for React applications.

StaticDelivr simplifies image delivery by optimizing performance through CDN integration, format conversion, and dynamic resizing. Perfect for React applications.

Ultralight JS for Ethereum

A CLI tool for monitoring web performance in modern web projects

A comprehensive Model Context Protocol (MCP) server that provides web performance auditing, accessibility testing, SEO analysis, security assessment, and Core Web Vitals monitoring using Google Lighthouse. Enables LLMs and AI agents to perform detailed we

AI-native JSON-LD schema utility with automated URL-to-Schema generation, intelligent content analysis, caching, rate limiting, performance monitoring, and AI optimization (ChatGPT, Voice). Complete automation & scale features. Zero runtime dependencies.

网页性能监控 18 项数据指标，浏览器信息，错误收集上报方案，前端工程化。

js monitor

Automatically test each Netlify build with DebugBear

Client-side JavaScript log, exception and tracing library for APM

🚀 A powerful, lightweight browser image compression library with TypeScript support. Compress JPEG, PNG, GIF images with multiple output formats (Blob, File, Base64, ArrayBuffer) and zero dependencies.

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

Client-side JavaScript exception and tracing library

Zero-tracking web performance monitoring - measure Core Web Vitals, errors, and resource timing without compromising user privacy. TypeScript-first with tree-shaking support.

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

🚀 A powerful, lightweight browser image compression library with TypeScript support. Compress JPEG, PNG, GIF images with multiple output formats (Blob, File, Base64, ArrayBuffer) and zero dependencies.

Modify from skywalking-client-js

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。

Dynamically load scripts & stylesheets when required.

This is the `webpack` plugin used to send bundle data to the <a href="https://yaba.io" target="_blank">Yaba application</a>.

A powerful Node.js tool to analyze, optimize, and detect duplicate inline SVGs in HTML from URLs or local files. Provides detailed optimization reports with color-coded output and potential file size savings.

专业的Web性能数据提取和分析工具，支持HAR和Performance Timeline文件分析，自动生成AI分析友好的报告

A modern, lightweight performance monitoring SDK for web applications. Monitor Core Web Vitals (LCP, FCP, FID, CLS, TTFB) with sendBeacon support.

High-performance webpage quality analyzer with 115 comprehensive metrics - powered by Rust + WebAssembly

Lightweight JavaScript library for viewport detection with debounced callbacks - intersection observer, lazy loading, scroll animations, infinite scroll, element visibility tracking with TypeScript support. Zero dependencies, ~1KB gzipped.

Zero-configuration framework-agnostic static prerendering for SPAs

Advanced React performance optimization toolkit - Built with modern React best practices and performance optimization techniques

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

plugin for lighthouse that uses Eco index's calculation methods to give a green it score

Extract the minimal CSS used in a set of URLs with puppeteer

Load testing CLI + React UI with live analytics

A lightweight, zero-configuration performance profiler for Node.js applications with real-time dashboard

🚀 Observability library with automatic capture - Just 1 line of code! Automatically captures clicks, errors, HTTP calls, and console logs with flexible error handling.

NextJs RTL Loader is a sleek, customizable top-loading progress bar for Next.js and React applications, designed with built-in RTL support.

Vue.js directives for viewport detection - v-inview and v-outview directives powered by @opuu/inview. Perfect for Vue 3 lazy loading, scroll animations, infinite scroll, analytics tracking with TypeScript support.

A powerful React performance monitoring component that helps you identify and fix performance issues in your React applications

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

Client-side JavaScript exception and tracing library for StackInsights APM

MCP server for Google PageSpeed Insights API - analyze web performance with Claude

A powerful JavaScript memory monitoring SDK for Web and mobile applications. Features real-time monitoring, data visualization, automatic reporting, and memory leak detection.


Pixel Perfect CSS is a powerful utility package designed to streamline the creation of visually appealing and responsive web application. With a focus on modern UI/UX principles, Pixel Perfect CSS provides a comprehensive set of CSS utilities to enhance y

A CLI tool for measuring the carbon footprint and energy consumption of web pages using the Cardamon model

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

A Next.js package for fullres.com analytics

Detect and remove unused CSS selectors with intuitive browser UI. Analyze HTML/CSS files and safely clean up unused styles with real-time preview.

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

A responsive lazy-loading image component for React

A comprehensive library for optimizing website performance with easy API

Stylesnap is a powerful CSS optimization tool that analyzes your content files, extracts used classnames and tags, and generates a minimal CSS file. Ideal for reducing CSS file size and improving web performance in TailwindCSS, Bootstrap, or custom framew

CLI tool to inject Dynatrace RUM JS into HTML by Matrex Softwares

web performance analysis monitoring tools

网页性能监控 18 项数据指标，浏览器信息，错误收集上报方案，前端工程化。

A performance booster for Next.js applications with Tailwind CSS, UI library selection, and optimized configurations.

Unofficial Node.js client for the WebPageTest REST API

网页性能监控 18 项数据指标，浏览器信息，错误收集上报方案，前端工程化。

Create a React application to show the output from @modus/gimbal

Advanced Web Performance Metrics SDK for real-time monitoring and analysis

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

Lightweight resource preloading SDK that intelligently utilizes browser idle time for optimal performance. Features smart concurrency control, dynamic time slicing, and user experience first design.

CLI tool for web ecoconception analysis based on GreenIT best practices. Validates W3C compliance, cache headers, and other performance optimizations.

A package that adds css breakpoints code to your css files

mmp-client-js

An intelligent MCP server with a fully automated batch pipeline for web-ready images. Features include noise reduction, auto levels/curves, JPEG artifact removal, 4K resizing, smart sharpening with shadow/highlight enhancement, and advanced WebP conversio

A Webpack plugin to perfume.js

Fork of minimalcss to patch some issues.

Client-side JavaScript exception and tracing library for Apache SkyWalking APM

skywalking-client-js

修复 skywalking-client-js includes 报错

js monitor