All Developer Tools

39 free tools organized by category. All run in your browser.

{ }Formatters & Beautifiers

JSON Formatter & Validator

Format, beautify, validate, and minify JSON

HTML Formatter

Format and indent HTML code

CSS Formatter

Beautify and minify CSS stylesheets

SQL Formatter

Format SQL queries with proper indentation

XML Formatter

Format and validate XML documents

JavaScript Beautifier

Format and beautify JavaScript code

B64Encoders & Decoders

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings

URL Encode/Decode

Percent-encode or decode URL components

HTML Entity Encode/Decode

Convert special characters to HTML entities

JWT Decoder

Decode and inspect JSON Web Tokens

#Generators

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

UUID Generator

Generate random UUID v4 identifiers

Password Generator

Create strong random passwords

Lorem Ipsum Generator

Generate placeholder text for designs

.gitignore Generator

Generate .gitignore files for any language, framework, or IDE

Code Screenshot Generator

Create beautiful code images with syntax highlighting and custom themes

⇄Data Converters

JSON to TypeScript

Convert JSON to TypeScript interfaces

JSON to CSV

Convert JSON arrays to CSV format

JSON to YAML

Convert JSON to YAML format

JSON to XML

Convert JSON to XML format

YAML to JSON

Convert YAML to JSON format

CSV to JSON

Convert CSV tables to JSON arrays

XML to JSON

Convert XML to JSON format

JSON to Go Struct

Convert JSON to Go struct types

AaText Tools

Word Counter

Count words, characters, sentences, reading time

Diff Checker

Compare two texts and highlight differences

Regex Tester

Test regular expressions with real-time matching

Regex Reference

Complete regex syntax reference and cheat sheet

Case Converter

Convert between camelCase, snake_case, etc.

Markdown Preview

Preview rendered Markdown in real-time

#Web & Number Tools

Color Picker

Pick colors and convert HEX, RGB, HSL

Color Converter

Convert colors between HEX, RGB, HSL, and HSV

CSS Gradient Generator

Create linear, radial, and conic CSS gradients visually

Timestamp Converter

Convert Unix timestamps to dates and back

Cron Expression Builder

Build and validate cron schedules visually

Crontab Generator

Generate crontab entries with a visual editor

Number Base Converter

Convert between binary, octal, decimal, hex

chmod Calculator

Calculate Unix file permissions and chmod values

JSON Path Tester

Test JSONPath expressions against JSON data