Base64 Encoder / Decoder
Quickly encode plain text to Base64 or decode Base64 strings back to readable text.
Password Generator
Generate strong, random passwords with custom length and character options.
Markdown → PDF
Write or paste Markdown and export a beautifully formatted PDF instantly in the browser.
JSON & jq Viewer
Visualize, format, and query JSON data using jq expressions with a live tree view.
JWT Decoder
Decode and inspect JSON Web Tokens — view header, payload claims, expiry status, and algorithm details.
Regex Tester
Write and test regular expressions with real-time match highlighting, capture groups, and replace preview.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates, pick a datetime to get its timestamp, and see a live clock.
World Timezone Viewer
Browse all timezones with live time, search quickly, and pin your frequently used zones.
Text Diff Checker
Compare two blocks of text and see exactly what was added, removed, or unchanged — unified or side-by-side view.
UUID Generator
Generate RFC 4122 version 4 UUIDs in bulk with secure browser randomness and one-click copy.
Data Transfer Calculator
Estimate transfer time from file size and speed using Megabit/Gigabit units with output in seconds, minutes, hours, and days.
YAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML instantly with parser-based validation and copy-ready output.