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HTML Entity Encoder & Decoder - Convert Characters & Entities Online

Encode and decode characters to HTML named and numeric entities (such as &, <, >) to prevent XSS and formatting bugs.

This tool runs in your browser.

Your text is processed locally in this browser.

How to use

  1. 01Paste text or entities into the input area.
  2. 02Choose Encode or Decode.
  3. 03Copy the converted result.

FAQ

Why is HTML entity encoding critical in web applications?

Characters like <, >, and & can be misinterpreted as markup tags by browsers or exploited for XSS attacks. Entities ensure safe display as text.

Does this tool support both named and numeric entities?

Yes. It converts between character literals and named entities (&copy;), decimal codes (&#169;), and hex codes (&#xa9;).

Can I configure whether non-ASCII characters are converted?

Yes. You can limit conversion to unsafe HTML characters or expand it to encode unicode symbols and emojis into numeric entities.