MP3 Tag Editor Online

An MP3 tag editor is a tool that reads and writes the metadata stored inside an MP3 file. This metadata, known as ID3 tags, covers the song title, artist name, album, release year, genre, track number, BPM, and cover artwork. Music players like iTunes, VLC, and Winamp use these tags to display song information and sort your library automatically.

Distribution platforms such as DistroKid and TuneCore also read ID3 tags when you upload a file, so having the right metadata in your MP3 helps your release appear with accurate information on Spotify, Apple Music, and other services. If your tags are missing or wrong, music apps often fall back to the filename or show "Unknown Artist," which looks unprofessional on any platform. Fixing them before distribution saves you from submitting a correction later.

This browser-based editor lets you update your MP3 metadata and download the corrected file without installing any software. Your audio never leaves your device.

ID3 tags are a metadata container format designed specifically for MP3 files. The name refers to "IDentify an MP3," and the standard has two main versions. ID3v1, introduced in 1996, stores a small fixed block of text at the end of the file with tightly limited space for each field and no support for images. ID3v2, which arrived in 1998 and is now the universal standard, allows much longer text values, supports Unicode characters for non-Latin scripts, and can embed album artwork as image data directly inside the file itself.

This tool writes ID3v2 tags, which are compatible with all modern music players, DJ software, streaming platforms, and distribution services. It is worth noting that ID3 is specific to the MP3 format. WAV, FLAC, and AAC files use different metadata systems (RIFF INFO chunks for WAV, Vorbis comments for FLAC, iTunes atoms for AAC), and those formats require separate editors. If you are working with MP3 files, ID3v2 is the right standard.

This tool supports nine editable fields.

Title is the track name shown in music players and streaming apps. Artist is the performing name or group. Album stores the release or compilation name. Year is the four-digit release year. Track number sets the position of the song within an album, which determines playback order. Genre is a freeform text field for the musical style, such as Electronic, Hip Hop, or Drum and Bass. Comment is an optional text note embedded in the file. BPM stores the tempo in beats per minute, which is useful for DJ software, key and tempo analysis tools, and library organisation. Cover art accepts a JPEG or PNG image and embeds it as album artwork inside the MP3.

All fields are optional. Leave any field blank to omit it from the output. Fields you fill in are written as ID3v2 tags in the downloaded file.

No. Everything happens inside your browser. When you select an MP3, the browser reads it from your local storage using the Web File API. Tag reading (powered by the jsmediatags library) and tag writing (powered by browser-id3-writer) both run client-side in JavaScript. The finished file is assembled in memory and downloaded directly to your device.

No part of your audio file ever travels over the internet or touches a server. This also means the tool works offline once the page has loaded. If you are editing files that contain unreleased music, stems, or other sensitive audio, you can be confident nothing is transmitted externally.

No. ID3 tags are stored in a separate header section of the MP3 file and are completely independent from the audio bitstream. When you edit metadata, only that header section is rewritten. The audio frames, which contain the encoded audio data, are read from your original file and copied to the output without any modification.

There is no re-encoding, no decompression, and no compression. The bitrate, sample rate, and audio quality of the downloaded file are identical to the original. Editing MP3 metadata is a lossless operation. This is very different from converting an MP3 to another format, where the audio must be decoded and then re-encoded, which can introduce quality loss. Changing ID3 tags never touches the audio.

Any field you leave empty is not written to the output file. If the original MP3 already had a tag for that field, it will be absent from the downloaded file. For example, if your file had a BPM tag and you leave the BPM field blank, the output will have no BPM tag at all. The download reflects exactly what you typed, nothing more.

When the tool reads your file on upload, it pre-fills every field it finds in the existing tags. Values that appear automatically are safe to keep without retyping. If a field is empty after upload, it means the original file had no tag for that field, or the tag could not be read. Fill in every field you want to preserve in the output.

Yes. The tool runs in any modern mobile browser, including Safari on iOS and Chrome on Android. On iOS, the downloaded file saves to your Files app or iCloud Drive depending on your browser settings. On Android, it saves to the Downloads folder. File access prompts and download behaviour may vary slightly between browsers and OS versions, but the tag editing itself works the same as on desktop.

Yes. The tool is completely free. There is no sign-up, no account required, no file size limit, and no watermark added to the output file. You can edit and download as many MP3 files as you like.