Encode or decode HTML entities like &, <, and .
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of any text.
Encode or decode text to and from Base64.
Encode or decode URL components and query strings.
Hide text inside other text using invisible zero-width Unicode characters.
Edit either side — the other one updates automatically. Decoding understands named entities (&amp;, &nbsp;, …) and numeric entities (&#39; / &#x27;).