Developer Tools
JSON formatter, encoders & dev utilities
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting and a tree view.
Base64 Encoder/Decoder
Encode and decode Base64 strings for text, files, and images with URL-safe support.
Regex Tester
Test and debug regular expressions with real-time match highlighting and capture group extraction.
UUID Generator
Generate UUID v1, v4, v5, and ULID identifiers with bulk generation and format options.
Cron Expression Generator
Build and validate cron expressions with a visual schedule builder and next-run preview.
Color Converter
Convert colors between HEX, RGB, HSL, HSV, and CMYK with shades, tints, and a named colors palette.
Diff Checker
Compare two texts or code snippets side-by-side or in unified view with line-level diff.
Markdown Editor
Write and preview Markdown with live HTML rendering, toolbar, and export to .md or .html.
JWT Decoder
Decode and inspect JWT tokens to view header, payload claims, and expiry status.
About Developer Tools Tools
Powerful free developer tools for formatting, encoding, decoding, and debugging. Essential utilities for web developers, backend engineers, and DevOps professionals.