Web

Encode and decode URL-formatted strings

Escape and unescape HTML entities

Parse URL parts and query parameters

Show browser, screen, and device details

Generate HTTP Basic Authorization headers

Generate Open Graph meta tags

Generate HOTP/TOTP one-time passwords

Look up common MIME types by extension or type

Inspect keyboard event key, code, and modifiers

Convert text to URL-friendly slugs

Edit rich text and export HTML

Parse browser and OS from a user-agent string

Searchable reference for HTTP status codes

Compare two JSON documents and highlight differences

Extract the original URL from Outlook SafeLinks

Download YouTube videos at your chosen quality or extract audio as MP3.