The Document.characterSet read-only property returns the character encoding of the current document. The character encoding is the character set used for rendering the document, which may be different from the encoding specified by the page. (The user can override the encoding.).

The properties document.charset and document.inputEncoding are legacy aliases for document.characterSet. Do not use them anymore.


var string = document.characterSet


<button onclick="console.log(document.characterSet);">
  Show character set
<!-- logs document's character set, such as "ISO-8859-1" or "UTF-8" -->


Specification Status Comment
The definition of 'characterSet' in that specification.
Living Standard Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 45.0 (Yes) (Yes) ? ? 9 (possibly earlier)
charset Made read-only in 45 (Yes) 44 (44) ? ? 9 (possibly earlier)
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 45.0 (Yes) (Yes) (Yes) ? ? ? 45.0
charset ? ? (Yes) 44.0 (44) 2.5 ? ? ? ?

Document Tags and Contributors

 Last updated by: arronei,