Tools · Browser only
Small tools. Zero data collection.
Format, inspect, convert, and generate without an account or backend. Your data never leaves your browser.
10 tools
JSON Formatter
Format, minify, validate, and inspect JSON locally.
Regex Tester
Test JavaScript regular expressions with matches and capture groups.
Color Converter
Convert HEX colors to RGB, HSL, and HSV with contrast guidance.
JWT Decoder
Inspect JWT headers, payloads, and time claims without verification.
Timestamp Converter
Convert Unix timestamps, ISO dates, local time, and UTC.
Base64 Encoder & Decoder
Encode and decode Unicode text as Base64 in your browser.
Text Diff
Compare two texts with line-level changes and clear statistics.
Slug Generator
Create clean, configurable URL slugs from natural language.
UUID Generator
Generate one or more secure UUID v4 identifiers.
Markdown Preview
Write and safely preview GitHub-flavored Markdown.