Small utilities that run entirely in your browser.
JSON formatter
Format, validate and minify JSON.
YAML ↔ JSON
Convert YAML to JSON and back.
Regex tester
Test regular expressions with live match highlighting.
Text diff
Compare two texts line by line.
Base64 encoder / decoder
Encode text to Base64 or decode it back, instantly.
URL encoder / decoder
Encode, decode and inspect URLs.
UUID generator
Generate random UUIDs, v4 or time-ordered v7.
Number base converter
Convert numbers between binary, octal, decimal and hex.
Timestamp converter
Unix timestamp to date and back, in any timezone.
Cron explainer & builder
Understand cron expressions and build them from fields.
Bup → Midi converter
Extracts MIDI tracks from Yamaha backup files.