Utilhub.dev

Fast, focused developer tools. Format JSON, test regex, encode hashes — no clutter.

Browse Tools

Regex Tester

Test regular expressions

UUID Generator

Generate UUID v4

JSON Formatter

Format, validate, minify JSON

JWT Parser

Decode and inspect JWT tokens

Base64 Encode/Decode

Encode and decode Base64

URL Encode/Decode

Percent-encode strings

Hash

SHA256, SHA512 hashing

Text/JSON Diff

Side-by-side diff

Timestamp Converter

Unix ↔ ISO ↔ human

Crontab Generator

Validate and human-readable cron

YAML ↔ JSON

Bidirectional conversion

Lorem Ipsum

Placeholder text