Developer Tools, Right in Your Browser
Fast, beautiful, and secure online tools for developers. Everything runs locally — your data never leaves your device.
All Tools
Click any tool to start using it instantly. No installation required.
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 strings instantly.
URL Encoder
Encode or decode URL components for safe transmission.
Hash Generator
Generate SHA-256, SHA-384, SHA-512 hashes using Web Crypto API.
Password Generator
Create strong, random passwords with customizable options.
Color Converter
Convert colors between HEX, RGB, and HSL formats with live preview.
QR Code Generator
Generate QR codes from any text or URL. Download as PNG.
Regex Tester
Test regular expressions with real-time matching and highlighting.
Lorem Ipsum
Generate placeholder text in paragraphs, sentences, or words.
Markdown Preview
Write Markdown and see a live HTML preview side by side.
Diff Checker
Compare two texts and see the differences highlighted.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) to see header and payload.
Why QuickTools?
🔒 Privacy-First
Every tool runs entirely in your browser using JavaScript. No data is ever sent to our servers. Your code, your text, your passwords — everything stays on your device.
⚡ Blazing Fast
No server round-trips. Tools respond instantly because they run locally. Works offline once loaded.
💯 Completely Free
No sign-up, no limits, no "premium" tier. Every tool is free to use forever. We believe developer tools should be accessible to everyone.