NDEFRecord: NDEFRecord() constructor

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The NDEFRecord() constructor of the Web NFC API returns a newly constructed NDEFRecord object that represents data that can be read from, or written to, compatible NFC devices; e.g., NFC tags supporting NDEF.

Syntax

new NDEFRecord(options)

Parameters

options

An object with the following properties:

data Optional

Contains the data to be transmitted. It can be a string, an ArrayBuffer, a TypedArray, a DataView, or an array of nested records.

encoding Optional

A string specifying the record's encoding.

id Optional

A developer-defined identifier for the record.

lang Optional

A valid BCP 47 language tag.

mediaType Optional

A valid MIME type.

recordType

A string indicating the type of data stored in data. It must be one of the following values:

"absolute-url": An absolute URL to the data.
"empty": An empty NDEFRecord.
"mime": A valid MIME type.
"smart-poster": A smart poster as defined by the NDEF-SMARTPOSTER specification.
"text": Text as defined by the NDEF-TEXT specification.
"unknown": The record type is not known.
"URL": A URL as defined by the NDEF-URI specification.

Return value

A new NDEFRecord.

Specifications

Specification
Web NFC # dom-ndefrecord-constructor

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`NDEFRecord()` constructor Experimental	Chrome – No support Chrome footnote No support	Edge – No support Edge footnote No support	Firefox – No support Firefox footnote No support	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 89 (Release date: 2021-03-02) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 63 (Release date: 2021-04-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 15 (Release date: 2021-08-13) footnote Full support	WebView Android – Full support WebView Android 89 (Release date: 2021-03-02) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

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Full support: Full support
No support: No support
: Experimental. Expect behavior to change in the future.

This page was last modified on Sep 24, 2025 by MDN contributors.

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