ID3 Tag Editor
Edit an MP3's ID3 tags and cover art: title, artist, album, genre, year and the picture, with every other frame carried through. Fix Unknown Artist.
Track
Drop an MP3
MP3 only · its tags open for editing, everything else rides along
The track, as a player will list it
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What the saved tag carries
The tag you'll save
Load an MP3 and this fills with the tag it will save. Nothing moves when the file lands.
How to use
- Choose the MP3. The fields appear once its current tag has been read, each one already filled in, with the card and the frame table beside them.
- Fix the fields that are wrong. Year is digits only, four at most, and anything else gets refused when you save. Clearing a box removes that tag from the copy.
- Change the cover if you want to: drop a picture on the card or press Replace cover. Then Save tags & download writes the file out as name-tagged.mp3, with the audio copied across untouched, and Download again hands you the same copy if you need it twice.
About this tool
A track filed under "Unknown Artist" normally has perfectly good audio and an empty tag, which is the thing an ID3 tag editor fixes. Load the MP3 and five boxes fill with whatever is already in the file: Title, Artist, Album, Genre, Year. Type over what is wrong, and a card above them shows the track as a player will list it, cover and all. If the file has no tag at all you get a short note plus five empty boxes to start from; if it has one this page cannot read, nothing is filled in until you say so.
Saving rewrites the tag instead of patching it. browser-id3-writer lifts the whole ID3v2 block off the front of the file, writes a fresh one, then copies the audio in behind it byte for byte. Everything the old tag held goes back in: track number, album artist, comments, lyrics and the cover art, and a table lists every frame with what happens to it. Emptying a box is how you delete a tag, since blank boxes are skipped when the new tag gets built.
The cover is a frame of the same tag, so it is edited here too: drop a picture on the card, or use Replace cover, Add cover or Remove cover. It is embedded exactly as given and never re-encoded; the page states what that does to the size of the file before you save. The rare frame the writer has no way to write, such as an embedded object, is named in a caution before the save rather than lost quietly.
If the file isn't an MP3 yet, the Audio Converter comes first. Trimming is Audio Cutter's job and stitching two together is Audio Joiner's. Tagging is worth doing last, once the audio is final.
Before you rely on it
- The writer carries the frames it knows how to write, which covers text, comments, lyrics, links, pictures and private data. Anything else, such as an embedded object or a chapter list, is named before you save and left out of the copy.
- MP3 only. The picker takes audio/mpeg and .mp3; M4A and FLAC keep their metadata in a different container, so those want converting first if ID3 is what you're after.
- One track per pass. A whole album means one trip through the form per file, which gets old around track four. Bulk retagging wants a desktop app.
- Genre suggests the standard ID3 list as you type but still takes any text, and it goes in exactly as typed. Tag one track Hip-Hop and another hip hop, and a library that groups by genre will file them apart.
Frequently asked questions
What are ID3 tags?
The block of metadata sitting at the front of an MP3: title, artist, album, year, track number, genre, cover art. Players read it to build the artist and album lists you browse, which is why a sensibly named file can still show up as nothing useful in a music app.
Why is my player still showing the old title?
Most players cache metadata when they first scan a folder and won't reread it unless you make them. Pull the track out of the library and add it back, or trigger a rescan. The file on disk already carries the new tag, which you can confirm by loading it back into this page.
Can I add album art?
Yes. Drop a JPEG, PNG, GIF or WebP on the card, or press Add cover or Replace cover. The picture is embedded as the front cover exactly as given, so a 2 MB photo makes the file about 2 MB bigger, and the page says so before you save. Remove cover takes it out; a cover you leave alone is carried through untouched.
What happens if I clear the Album box and save?
The album frame is left out of the new tag, so it disappears from the copy. That is how you strip a wrong value rather than overwrite it, which comes in handy for podcast episodes that arrive labelled with somebody else's album name.
Does saving cost any audio quality?
None at all. Nothing is decoded or re-encoded: the MP3 frames are copied straight through and only the tag in front of them is rebuilt, which is why the saved file comes out roughly 4 KB bigger, from the padding the writer leaves behind.
It says no ID3 tags found. Is the file broken?
Usually not. Plenty of MP3s ship with no tag at all, especially rips and voice recordings, and you get blank boxes to fill in from scratch. If the same message shows up for a file you know is tagged, check that it really is an MP3 and not an M4A wearing an .mp3 name.
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