🛠️ 1088+ 纯前端在线工具集 | 单文件·零构建·可离线·隐私优先 | Pure HTML Tools - Single file, Zero build, Offline-ready, Privacy-first

a soft toolkit for curious makers — free, open source tools for electronics, generative text, color, zines & more.

A curated collection of useful and fun bookmarklets to enhance your browsing experience.

Rui Quintino (with 🤖) Web Snippets Playground

Metronome Online is a simple and intuitive metronome app that provides an animated metronome and sound to help you keep time while practicing music. With an adjustable BPM, it's perfect for musicians of all levels.

The ultimate professional suite of 30+ developer tools and 30+ technical guides. Built for speed, security, and enterprise-grade performance

A simple collection of helpful online tools I often use and recommend.

A collection of powerful, private-first online utilities for calculations, file metadata, and web development. 100% client-side and secure.

A privacy-first suite of web utilities. 100% client-side data processing.

A lightweight Node.js tool for checking HTTP redirects for large lists of URLs and exporting results to CSV.

Bookmark_Cleaner is a Python tool designed to automatically scan, organize, and clean your browser bookmarks. It detects and removes duplicates, dead links, and empty folders, making your bookmark collection tidy and efficient. Ideal for anyone who wants to maintain a well-organized set of online resources.

WebToolsLibrary is a curated collection of free online tools designed for developers, webmasters, and SEO professionals to perform quick checks, conversions, and technical analyses directly in the browser.

Common TypeScript web utilities

Vixaren is a free online tools platform offering a wide range of utilities for web diagnostics, text processing, data conversion, and everyday technical tasks. All tools are accessible directly in the browser with no registration required.

🔗 Minimal vanilla JS directory listing app for managing multi-environment service links in Distroless Docker image

A simple, client-side AI chatbot that runs entirely in your browser. Features real-time streaming, tool support, and local persistence for your chats and API keys. No backend needed-just plug in your key and start chatting.

A fully open-source, high-performance, single-page web utilities platform featuring exactly 100 client-side production tools across 5 major categories (PDF Docs, Image Filters, Text Mechanics, Dev Helpers, and Math Conversions). Requires zero server hosting fees and runs 100% in-browser.

A lightweight, privacy-first suite of universal web utilities running 100% on the client side. Convert Excel to customized vCards, calculate metrics, and more instantly offline.

134+ free browser-based online tools — no signup, no download