Free Developer Tools

No sign-up required. No ads. Just tools.

JSON Escape

Escape or unescape strings for safe JSON embedding

Encode / Decode

Convert strings between base64, URL, HTML, hex, and punycode

Hash Generator

Generate MD5, SHA-256, SHA-512, BLAKE3, and HMAC hashes

UUID / ULID Generator

Generate and decode UUIDs (v4, v7) and ULIDs

Regex Tester

Test, match, and extract with regular expressions

Case Converter

Convert between camelCase, snake_case, kebab-case, and more

Word Counter

Count characters, words, sentences, lines, bytes, and tokens

QR Code Generator

Generate QR codes as PNG or SVG with custom colors