ASCII to HTML Entities Converter

Special escape sequences that represent characters the HTML parser would otherwise treat as markup. Named entities like & and < are readable; numeric entities like A (decimal) or A (hex) can represent any Unicode code point.

To render <script> as text instead of executing it, to show HTML snippets inside documentation, and to smuggle non-ASCII characters through systems that only cope with 7-bit text. It’s the first line of defence against XSS.

Named entities are human-readable (<, &) but only cover a fixed table. Numeric entities (< or <) cover every Unicode code point. This tool uses named entities for the five HTML-special characters and numeric entities for everything else when you pick a numeric mode.

Yes. Encoding runs entirely in your browser – nothing is uploaded, cached, or tracked. After the page loads you can disconnect the network and keep encoding indefinitely.

The “Safe XSS escape” mode performs the minimum safe escaping for HTML text content: &, <, >, ", and ' (via '). That is enough for rendering text inside element bodies. For attribute values, URL parameters, or inline JavaScript you still need context-specific escaping – this tool is for HTML text content, not a universal sanitiser.

Yes. HTML, CSS, and JavaScript are self-contained. Once the page has loaded, you can turn off Wi-Fi and the tool keeps working.

Yes, 100% free with no cap on input length or number of conversions. No sign-up, no premium tier, no watermark.

Only in the numeric modes with “Skip printable ASCII” off. The default Safe mode touches only the five HTML-special characters, and the numeric modes with skip-printable on leave letters and digits readable – encoding only what actually needs it.

Yes. Iteration uses Array.from + codePointAt, so 😀 encodes as one 😀 (decimal) or 😀 (hex), not as a pair of surrogate halves. CJK, Cyrillic, Arabic, Devanagari all round-trip correctly.

Use the sibling HTML Entities to ASCII decoder. It accepts named and numeric (decimal and hex) entities and restores the original characters, including emoji and CJK.