Developer Tools

Formatters, encoders and utilities for developers and makers.

Developer Tools

JSON Formatter and Validator

Beautify, minify and validate JSON instantly β€” with clear error messages when something is off.

Developer Tools

Base64 Encoder and Decoder

Encode and decode Base64 strings in your browser, with full UTF-8 support.

Developer Tools

QR Code Generator

Turn any URL, text or contact info into a scannable QR code β€” download it in seconds.

Developer Tools

Unix Timestamp Converter

Convert any Unix timestamp to a readable date β€” or any date to a timestamp β€” in milliseconds, seconds and more.

Developer Tools

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 cryptographic hashes instantly β€” runs entirely in your browser, nothing sent to any server.

Developer Tools

UUID Generator

Generate unique UUIDs instantly β€” one at a time or in bulk.

Developer Tools

CSV ↔ JSON Converter

Convert between CSV and JSON instantly β€” paste, upload, transform, download.

Developer Tools

Text Diff Checker

Paste two versions of any text and instantly see every difference highlighted in color.

Developer Tools

Chart & Graph Maker

Turn your data into beautiful charts β€” free, instant, no signup.

Developer Tools

Regex Tester

Write, test and debug regular expressions in real time β€” free and instant.

Developer Tools

Markdown Editor & Preview

Write Markdown, see your HTML instantly β€” free, no account, no limits.

Developer Tools

Favicon Generator

Turn any image or emoji into a complete favicon set β€” free and instant.

Developer Tools

Cron Expression Builder

Build cron schedules visually β€” get the expression, the description, and the next run times instantly.

Developer Tools

CSS Box Shadow Generator

Design multi-layer box shadows visually and copy production-ready CSS instantly.