HTML Entity Encoder/Decoder Online - EXUtil Extended Utilities

Free online HTML entity encoder and decoder. Convert between named entities and numeric entities to prevent XSS and rendering issues.

How to use

  1. Paste or import the content you want to process.
  2. Choose an available action and run the tool.
  3. Review the result, then copy or download the output.

Frequently asked questions

What are HTML entities?
HTML entities are codes used to display special characters in web pages, like &lt; for < and &amp; for &. They prevent characters from being interpreted as HTML tags.
When is HTML entity encoding needed?
When user input needs to be displayed as plain text, to prevent HTML tags from being executed and avoid XSS attacks. Also used to display reserved characters in HTML.
What's the difference between named and numeric entities?
Named entities like &lt; &gt; are memorable but limited in number; numeric entities like &#60; &#62; can represent any Unicode character and are more universal.
Do all characters need encoding?
No. Only HTML reserved characters (< > & " ') and special control characters need encoding. Regular alphanumeric characters can be used directly.
How to prevent XSS attacks?
HTML-encode all user input before displaying it to ensure malicious scripts cannot execute. Also use CSP and other security measures.