PinusX DevTools - 26 free developer tools — no signup, no ads, 100% private

26 developer tools in one fast, clean interface. JSON Formatter, Regex Tester, SQL Formatter, JWT Decoder, Base64, UUID Generator, Webhook Tester, and 19 more. Every tool runs 100% in your browser — your data never hits a server. No signup, no ads, no tracking cookies. Built by a solo developer with React + Tailwind. Zero npm dependencies for core tool logic. Just paste and go.

Hey Product Hunt! 👋

I'm Hari, a solo developer. Over the past few months, I built 26 free developer tools — and I want to share them with you.

The backstory: I kept switching between 10+ different websites just to format JSON, decode a JWT, test a regex, or generate a UUID. Each one had different UIs, ads everywhere, and some even sent my data to their servers. I thought: why isn't there one clean, fast, private place for all of this?

So I built it.

What's included (26 tools): 🔧 Data tools: JSON Formatter, JSON Validator, JSON Diff, JSON Schema Validator, YAML Formatter, CSV↔JSON Converter 🔐 Encode/Decode: Base64, JWT Decoder, URL Encoder, HTML Entities ⚡ Generators: UUID, Hash (MD5/SHA), Lorem Ipsum, Color Converter 🛠️ Dev utilities: Regex Tester, SQL Formatter, Cron Parser, Timestamp Converter, Chmod Calculator, Text Diff, HTTP Status Codes, Markdown Preview, TOML Formatter 🌐 Testing: Webhook Tester with real-time request inspection

Key principles:

100% client-side — your data never leaves your browser
No signup required — just open and use
Zero ads — forever
Zero npm dependencies for core logic — every parser, formatter, and validator is built from scratch

I'm a solo dev building this in public. The entire frontend is React + Tailwind CSS, deployed on Vercel.

I'd love to hear: Which tool do you reach for most often? What's missing from your workflow that you wish existed?

PinusX DevTools - 26 free developer tools — no signup, no ads, 100% private

Replies