I built 59 free browser-based dev tools in vanilla JS — here's what I learned
I've been quietly building Antigravity Tools — a collection of 59 free, browser-based developer utilities — and today I'm sharing everything I built and learned. Why vanilla JS? No React, no build step. The main constraint I set for myself: zero dependencies, zero server, zero telemetry . When you paste your JWT token into jwt.io, it goes to their server. When you use an online regex tester, your…
I have quietly developed Antigravity Tools, a collection of 59 free, browser-based developer utilities. The project is built entirely with vanilla JavaScript, without using React or any build process. My main constraint was to have zero dependencies, zero server interaction, and zero telemetry. Each operation runs directly in your browser using native APIs such as Web Crypto API, Canvas API, Web Audio API, and IndexedDB.
There are eight categories of tools: Security & Auth Tools, RSA & ECC Key Generator, Hash & Password Generator, PII Masker, Universal Encoder/Decoder, AI & Prompting Tools, AI Text Humanizer, and Dev & Code Tools. These tools allow you to decode JWT tokens, generate cryptographic keys, create hash values, mask personally identifiable information, encode and decode various data formats, assist with AI prompting and token cost estimation, build and manage JSON data, convert cURL commands to JavaScript, Python, Go, or PHP code, test regular expressions, plan cron schedules, and build git commands interactively. You can explore all the tools at https://antigravitytools.app.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
