The toolbox
Small tools. Useful results.
Eight focused utilities that run locally in your browser. Input stays on your device.
JSON Formatter
Format, minify and validate JSON with helpful errors.
Base64 Encoder / Decoder
Encode Unicode text and decode UTF-8 safely.
URL Encoder / Decoder
Escape URL components and inspect encoded text.
SHA-256 Generator
Calculate a cryptographic digest locally.
Unix Timestamp Converter
Move between seconds, milliseconds and dates.
IPv4 CIDR Calculator
Find networks, masks and usable host ranges.
UUID Generator
Generate secure random version 4 identifiers.
HTTP Status Explorer
Look up registered status codes and their use.
A note on sensitive data
The tools do not send your input to a server. Your browser extensions, clipboard and shared computer can still access data. Clear the fields when you finish.