MDN’s new design is in Beta! A sneak peek:

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

The TextEncoder.encode method returns a Uint8Array containing the text given in parameters encoded with the specific method for that TextEncoder object.


b1 = encoder.encode(buffer, options);
b2 = encoder.encode(buffer);


Is a DOMString containing the text to encode.
options Optional
Is a TextEncodeOptions dictionary with the property:
A Boolean flag indicating if the encoding can be done in chunks or not. It defaults to false.


Specification Status Comment
The definition of 'TextEncoder.encode()' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 38 19.0 (19.0) [1] No support 25 No support
Available in Web Workers 38 20.0 (20.0) No support 25 No support
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support No support 19.0 (19.0) [1] 1.0.1 (19.0) No support ? No support
Available in Web Workers No support 20.0 (20.0) 1.0.1 (20.0) No support ? No support

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

See also

Document Tags and Contributors

 Contributors to this page: fscholz, realityking, kscarfone, teoli
 Last updated by: fscholz,