Find MIME types by file extension. Comprehensive database for common file types and web formats.

Complete HTTP status code reference with descriptions. Includes 1xx, 2xx, 3xx, 4xx, 5xx categories. Searchable database.

Parse browser, OS, and device from User-Agent string. Extract detailed client information for debugging.

Generate random MAC addresses and validate format. Supports multiple notation styles for network configuration.

Convert between HTML entities and characters. Encode/decode special characters for web development with common entity reference table.

Encode or decode URLs and query parameters. Choose between encodeURI and encodeURIComponent. Free client-side tool for web development.