Developer Tools

Essential tools for developers

Developer tools save hours of manual work for software engineers, web developers, and DevOps professionals. Our free online developer tools help you format and validate JSON, encode/decode URLs and Base64, generate UUIDs, decode JWTs, minify CSS and JavaScript, generate QR codes, and more — all running instantly in your browser without any installation.

Common Use Cases

›Format messy API response JSON to inspect data structure
›Encode query parameters before inserting them into URLs
›Generate unique IDs for database records or session tokens
›Inspect JWT tokens to debug authentication issues
›Minify CSS and JS files to improve page load speed

All Developer Tools Tools (9)

JSON Formatter & Validator

Format, validate and minify JSON data

Developer Tools

URL Encoder / Decoder

Encode or decode URL strings

Developer Tools

Base64 Encoder / Decoder

Encode or decode Base64 strings

Developer Tools

UUID Generator

Generate random UUID v4 strings

Developer Tools

HTML Entity Encoder / Decoder

Encode or decode HTML entities like < > &

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CSS Minifier

Minify CSS by removing whitespace and comments

Developer Tools

JS Minifier

Minify JavaScript by removing whitespace and comments

Developer Tools

JWT Decoder

Decode and inspect JWT token header and payload

Developer Tools

QR Code Generator

Generate QR codes from text or URLs and download as PNG

Developer Tools