mp3tag.js is an open sourced JavaScript library used to edit the metadata of audio files. It currently supports ID3v1, ID3v2.2, ID3v2.3, and ID3v2.4 tags.

Visit https://mp3tag.js.org to learn more about the library and view it in action through an editor. You can also explore the examples directory.

The website is also open sourced and can be viewed at the gh-pages branch.

Features

• Read, write, and remove ID3 tags (Supports ID3v1, ID3v2.2, ID3v2.3, and ID3v2.4)
• Supports unsynchronisation
• Standards compliant. See id3.org mutagen-specs.readthedocs.io

Installation

You can download the ready-to-use script at GitHub releases or you can build your own by cloning this repository using git then build it.

git clone https://github.com/eidoriantan/mp3tag.js
cd ./mp3tag.js
npm install
npm run build

You can also install this package by using npm:

npm install --save mp3tag.js@latest

If you are using browser, you can just install the library through a CDN:

<script src="https://cdn.jsdelivr.net/npm/mp3tag.js@latest/dist/mp3tag.min.js">

Usage

For browsers:

<input type="file" id="input-file" accept="audio/mpeg">
<script>
const inputFile = document.getElementById('input-file')
inputFile.onchange = function () {
  const reader = new FileReader()
  reader.onload = function () {
    const buffer = this.result

    // MP3Tag Usage
    const mp3tag = new MP3Tag(buffer)
    mp3tag.read()

    // Handle error if there's any
    if (mp3tag.error !== '') throw new Error(mp3tag.error)
    else console.log(mp3tag.tags)
  }

  if (this.files.length > 0) {
    reader.readAsArrayBuffer(this.files[0])
  }
}
</script>

For Node.js:

const MP3Tag = require('mp3tag.js')
const fs = require('fs')

const buffer = fs.readFileSync('/path/to/audio.mp3')
const mp3tag = new MP3Tag(buffer)

mp3tag.read()

// Handle error if there's any
if (mp3tag.error !== '') throw new Error(mp3tag.error)
else console.log(mp3tag.tags)

If you want a detailed documentations, please visit the documentations page at mp3tag.js.org.

Support

If you had found a bug or any unexpected behavior, you can submit an issue through GitHub issues. If you wanted to contribute to this repository, please refer to CONTRIBUTING.md.