This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

The TextDecoder interface represents a decoder for a specific method, that is a specific character encoding, like utf-8, iso-8859-2, koi8, cp1261, gbk, ... A decoder takes a stream of bytes as input and emits a stream of code points. For a more scalable, non-native library, see StringView – a C-like representation of strings based on typed arrays.


The TextDecoder interface doesn't inherit any properties.

TextDecoder.encoding Read only
Is a DOMString containing the name of the decoder, that is a string describing the method the TextDecoder will use.
TextDecoder.fatal Read only
Is a Boolean indicating whether the error mode is fatal.
TextDecoder.ignoreBOM Read only
Is a Boolean indicating whether the byte order marker is ignored.


Returns a newly constructed TextDecoder that will generate a code point stream with the decoding method specified in parameters.


The TextDecoder interface doesn't inherit any method.

Returns a DOMString containing the text decoded with the method of the specific TextDecoder object.


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

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 38.0 19.0 (19.0) [1] Not supported 25 Not supported
Available in Web Workers 38.0 20.0 (20.0) Not supported 25 Not supported
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support Not supported 38.0 19.0 (19.0) [1] 1.0.1 (19.0) Not supported ? Not supported 38.0
Available in Web Workers Not supported 38.0 20.0 (20.0) 1.0.1 (20.0) Not supported ? Not supported 38.0

[1] An earlier, and slightly different, version of the specification was implemented in Firefox 18.

See also


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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Encoding Experimental Expérimental