HTML Entity Encode / Decode

Writing < > & " ' directly in HTML breaks structure or is read as tags, so they must be escaped into entities (&lt; &gt; &amp; …). Escaping user input also prevents XSS. This tool converts both ways: encode turns special chars into entities (optionally Unicode / emoji into &#… too), decode turns entities back to plain text.

Decoding uses the browser natively, supporting named entities (&copy;) and numeric ones (&#169; / &#xA9;). All local, never uploaded.