Encode special characters for safe use in URLs, or decode an encoded URL back to plain text.
Convert special characters to HTML entities and back.
Generate SHA-1, SHA-256, and SHA-512 hashes from any text.
Generate random UUID v4 identifiers, one at a time or in bulk.
Convert between Unix timestamps and human-readable dates.
Strip comments and whitespace from CSS to cut file size.
Strip comments and whitespace from HTML to cut file size.
Donaldson R F