Developer Tools

Efficient, fast and reliable online tools to make your development workflow easier.

Formatting & Validation

JSON Formatter

Format and validate JSON, with syntax error detection

JSON Validator

Advanced JSON validation with JSON Schema support

YAML Formatter

Format YAML files and detect syntax errors

XML Formatter

Format and validate XML documents

SQL Formatter

Format SQL queries for readability

Converters

JSON / YAML

Convert between JSON and YAML formats

JSON / XML

Convert between JSON and XML formats

JSON / CSV

Convert between JSON and CSV formats

Timestamp Converter

Convert between timestamps and date/time formats

Color Converter

Convert between HEX, RGB, HSL and other color formats

Base64 Encode / Decode

Base64 encode and decode for text and files

Unit Converter

Convert between px, rem, em, vw and more

Age Calculator

Calculate accurate age from a birth date

Comparison

Text Diff

Compare two pieces of text and highlight differences

Image Tools

Image to ICO

Convert images to ICO favicons in multiple sizes

Batch Image Resize

Resize images in batch with multiple format support

Image ↔ Base64

Convert between images and Base64 strings

QR Code Generator

Customize colors, shapes, background and center logo

Generators

Mock Data Generator

Generate mock data for testing

UUID Generator

Generate random UUIDs / GUIDs

Password Generator

Generate strong random passwords with custom rules

Encoders / Decoders

URL Encode / Decode

URL encoding and decoding

HTML Entity Encode / Decode

Encode and decode HTML special characters

Unicode Converter

Convert between text and Unicode escapes

JWT Decoder

Decode and inspect JWT tokens

Code Tools

Regex Tester

Test and debug regular expressions

Cron Expression Builder

Generate and parse cron schedule expressions

Markdown to Image / Word

One-click export to image or copy to Word, with live preview

Markdown to Poster

Turn Markdown into a long social poster image