Web/API/Blob/text

The text() method in the Blob interface returns a Promise that resolves with a string containing the contents of the blob, interpreted as UTF-8.

Syntax

var textPromise = blob.text();

blob.text().then(text => /* do something with the text */);

var text = await blob.text();

Parameters

None.

Returns

A promise that resolves with a USVString which contains the blob's data as a text string. The data is always presumed to be in UTF-8 format.

Usage notes

The FileReader method readAsText() is an older method that performs a similar function. It works on both Blob and File objects. There are two key differences:

Blob.text() returns a promise, whereas FileReader.readAsText() is an event based API.
Blob.text() always uses UTF-8 as encoding, while FileReader.readAsText() can use a different encoding depending on the blob's type and a specified encoding name.

Specifications

Specification	Status	Comment
File APIThe definition of 'Blob.text()' in that specification.	Working Draft

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`text()`	Chrome Full support 76	Edge Full support 79	Firefox Full support 69	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 76	Chrome Android Full support 76	Firefox Android No support No	Opera Android Full support 54	Safari iOS No support No	Samsung Internet Android Full support 12.0

Legend

Full support: Full support
No support: No support