💻 Free Online Developer Tools

Free online developer tools — JSON formatter, Base64 encoder, regex tester, JWT decoder, hash generator, code minifier, and 25+ more tools for developers.

⭐ Most Popular

JSON Formatter

Format and validate JSON instantly

Base64 Encode/Decode

Encode or decode Base64 text and files

URL Encode/Decode

Encode or decode URL strings

HEX / RGB / HSL

Convert between color formats

CSS Minifier

Minify CSS and reduce file size

JS Minifier

Minify JavaScript code

HTML Beautifier

Format and indent HTML code

Regex Tester

Test regex with real-time matching

JWT Decoder

Decode and inspect JSON Web Tokens

Diff Checker

Compare two texts side-by-side

Hash Generator

Generate MD5, SHA-256, SHA-512 hashes

Lorem Ipsum

Generate placeholder text instantly

Timestamp Converter

Convert Unix timestamps to dates

Cron Generator

Build cron expressions visually

Markdown to HTML

Convert Markdown to HTML

HTML to Markdown

Convert HTML to Markdown

UUID Generator

Generate random UUID v4

📚 All Developer Tools

SQL Formatter

Format and beautify SQL queries

YAML / JSON

Convert between YAML and JSON

XML Formatter

Format and validate XML

cURL to Code

Convert cURL commands to code

JWT Generator

Create signed JWT tokens

HTML Escape

Escape and unescape HTML entities

Color Palette

Generate harmonious color palettes

Number Base Converter

Convert between binary, hex, octal, decimal

.htaccess Generator

Generate Apache .htaccess rules

User Agent Parser

Parse and analyze user agent strings

Box Shadow Generator

Create CSS box-shadow visually

Gradient Generator

Create CSS gradients visually