Tidy a library without touching the audio
Drop your files and the tag editor opens with whatever tags they already carry, including artwork. Edit a cell to change one file, or tick several rows and use Bulk edit to set the same artist, album, genre, year or cover on all of them. Fields you leave empty in Bulk edit are left alone.
Download originals with new tags rewrites only the tag section of each file and keeps the audio bytes exactly as they were, so a 320 kbps MP3 stays a 320 kbps MP3. Several files arrive as one ZIP. If you convert instead, the new files get the same tags.
What gets written, per format
| Format | Tag system | Notes |
|---|---|---|
| MP3 | ID3v2.3 | The version Windows Explorer, Apple Music and DJ software read most reliably. Artwork as APIC (front cover). |
| FLAC | Vorbis comment + PICTURE | Tempo and key go in the common BPM and INITIALKEY fields. |
| M4A | iTunes ilst atoms | ©nam, ©ART, ©alb, ©day, ©gen, tmpo, covr and initialkey. |
| WAV | ID3 chunk + LIST/INFO | DJ software reads the ID3 chunk; Windows Explorer reads LIST/INFO. |
| AIFF | ID3 chunk | The usual place DJ and Apple software look for AIFF tags. |
| OGG (Opus) | OpusTags | Artwork as METADATA_BLOCK_PICTURE. Ogg Vorbis files can be read but not tagged in place. |
Rename files from their tags
Type a template such as {artist} - {title} [{camelot} {bpm}] and every download is named from its tags, for example Artist Name - Track Title [8A 124].mp3. Available tokens: {artist}, {title}, {album}, {year}, {genre}, {bpm}, {key}, {camelot}, {name} (the original file name) and {n} (position in the queue). If a tag is empty, its brackets and dashes disappear instead of leaving [ ] behind.
BPM and key in one pass
The same panel detects tempo and key, so you can tag a crate with BPM and Camelot keys and rename it in one go. More on how detection works on the BPM finder and key finder pages.
Tag editor questions
Does editing tags change the audio?
No. Saving the originals with new tags rewrites only the tag section. Converting to another format re-encodes, as any conversion does.
Why can't I edit an Ogg Vorbis file in place?
Vorbis stores its tags inside the stream headers in a way that needs the stream rebuilt. WAVR reads those tags, and converting to OGG (Opus), FLAC or MP3 carries them over.
How big can the artwork be?
JPEG or PNG up to 2 MB. Most DJ software and phones show covers at 500–1000 pixels, so a 1000 × 1000 JPEG of a few hundred KB is plenty.
Are my files uploaded?
No. Tags are read and written in your browser.
Is the tag editor free?
Reading tags and carrying them over when you convert is free. Editing, artwork, bulk edit and templates are Pro tools, open to everyone while Pro is in beta. See pricing.