Blob: text() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

Note: This feature is available in Web Workers.

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

Syntax

js
text()

Parameters

None.

Return value

A promise that resolves with a string 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
File API
# dom-blob-text

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
text()

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
Has more compatibility info.

See also