Mutag

A simple MP3 file tag parser.

You can use it to get album photo, album name, date, style and other information in MP3 music files.

中文文档

Preview

Demo

Installation

npm install mutag

Usage

In the browser, you should import dist/mutag.min.js and then use window.mutag.

<script src="../dist/mutag.min.js"></script>
<script>
    const mutag = window.mutag;
    // the type of input element is 'file'
    const inputDOM = document.querySelector('.file-input');
    inputDOM.addEventListener('change', e => {
        const file = e.target.files[0];
        mutag.fetch(file).then((tags) => {
            //get all tags
            console.log(tags);
        });
    }, false);

In Node.js, Mutag should be introduced with the require method.

const fs = require('fs');
const mutag = require('mutag');
 
fs.readFile('path/to/file.mp3', (err, data) => {
  mutag.fetch(data).then((tags) => {
    //get all tags
    console.log(tags);
  });
});

API

mutag.fetch(blob)

Parse the MP3 file and return a Promise object. The parameter is a Blob object. In the browser, the Blob object can be obtained by listening for the onchange event of the input (attribute type="file"), or by listening for the element's ondrop event, or passing Ajax. In Node.js, we can get it with the fs.readFile() API. Return value is a Promise object. if there is no error, you can get all existing MP3 file tags in the callback function resolve with its then method.

mutag.version

Return the version number of Mutag.

Tag description

Mutag can parse ID3v2.3. Some common tags are as follows:

Tag	Description
APIC	Attached picture, mostly in JPG format, few in PNG format
COMM	Comments, release notes for music files
GEOB	General encapsulated object
PRIV	Private frame, a series of private labels defined by Windows Media
TALB	Album/Movie/Show title
TCOM	Composer
TCON	Content type, music style, different numbers represent different styles, here are details.
TIT2	Title/songname/content description
TPE1	Lead performer(s)/Soloist(s)
TPUB	Publisher
TRCK	Track number/Position in set
TYER	Year

For more information on tags, please check here.

Browser compatibility

I use some newer APIs such as TextDecoder, Blob, and FileReader, so only modern browsers (new versions of Chrome, Firefox, Edge, etc.) are supported.

License

MIT