ToolCMB

ID3 Tag Editor

Fix song titles, artists and albums, add album art, number tracks and fill tags from file names — for one MP3 or a whole album at once. Works with MP3, M4A, FLAC, OGG and WAV, keeps the audio untouched and never uploads your music.

  • No upload
  • Album art
  • Batch editing
  • Lossless

Drop music files here

or

You can also paste with Ctrl+V (⌘+V on Mac) or drop a whole folder.
MP3 (ID3) · M4A / AAC · FLAC · OGG · OPUS · WAV

Your files are processed on your device and are never uploaded.

How it works

How to edit MP3 tags

Open, edit, save — your music stays on your device.

  1. 1

    Add music files

    Drop MP3, M4A, FLAC, OGG or WAV files (or an album folder) onto the page.

  2. 2

    Edit the tags

    Select a file and change any field, or switch on “Edit all files together”. Drop an image to set the album art.

  3. 3

    Save & download

    Click “Save tags” and download the files (or a ZIP). The audio is copied without re-encoding.

Why ToolCMB

Everything a music tagger needs

Without installing software.

All important fields

Title, artist, album, album artist, year, track and disc numbers, genre, BPM, composer, comment and lyrics.

Album art

Add, replace, extract or remove cover images — big images are resized automatically.

Batch editing

Set the album, artist, year or cover for a whole album in one go.

Smart helpers

Fill tags from file names like “01. Artist - Title”, number tracks automatically and rename files from tags.

Lossless

Only the tags are rewritten; the audio stays bit-identical.

Many formats

MP3 (ID3v2.4), M4A/AAC (iTunes tags), FLAC and OGG (Vorbis comments) and WAV (INFO).

Private

Your music library never leaves your device.

Free

No sign-up, no limits, no watermark.

What are ID3 tags?

ID3 tags are the information stored inside an MP3 file — title, artist, album, track number, genre, album art and more. Music players, phones, car stereos and streaming apps use them to sort and display your library. Other formats have equivalents: MP4/iTunes atoms in M4A files and Vorbis comments in FLAC and OGG.

For a well-organised library, give every track of an album the same Album and Album artist (use “Various Artists” for compilations), and fill in track numbers with the total (e.g. 3 / 12) so tracks play in the right order.

This editor writes ID3v2.4 tags, the current version supported by all modern players. Only the tag section of the file is rewritten — the audio frames are copied without re-encoding, so the sound quality never changes.

Common tag fields

FieldID3 frameMP4 atomVorbis comment
TitleTIT2©namTITLE
ArtistTPE1©ARTARTIST
AlbumTALB©albALBUM
Album artistTPE2aARTALBUMARTIST
Year / dateTDRC©dayDATE
Track numberTRCKtrknTRACKNUMBER
GenreTCON©genGENRE
Album artAPICcovrMETADATA_BLOCK_PICTURE

Tips

FAQ

Frequently asked questions

Can’t find your answer? Contact us — we reply quickly.

How do I edit the tags of an MP3 file?

Drop the MP3 onto this page, change the fields in the tag form and click “Save tags”. Download the updated MP3.

How do I add album art to an MP3?

Select the file (or switch on “Edit all files together”), then drop, paste or choose a JPG/PNG image on the cover box and save.

Can I edit many files at once?

Yes. Switch on “Edit all files together”: fields you fill in (e.g. album, year, cover) are applied to every file; mixed fields you leave empty stay unchanged.

Does editing tags change the sound quality?

No. Only the tags are rewritten; the audio is copied bit for bit.

Which formats are supported?

MP3, M4A/AAC, FLAC, OGG/Opus and WAV (WAV can’t hold album art).

Are my files uploaded?

No. The editor runs completely in your browser.

Which ID3 version is written?

ID3v2.4 with UTF-8 text, supported by Windows, macOS, iOS, Android and all common music players.

More free audio tools

Compress, convert, cut, join and analyse audio — fast, free and private, right in your browser.

Browse all tools