Use the free MP3 Tag Editor below: fix the title, artist, album, year, genre and track number on any MP3, right in your browser. Your file never leaves your device.
Fix the wrong song name on an MP3
A music file with the wrong name is hard to find later. It shows up as Track01, or as Unknown Artist, and it sits in the wrong place in every playlist. The MP3 Tag Editor above fixes that. You open an MP3, type the real title, artist, album, year, genre and track number, and the tool downloads a new MP3 with those tags written in. The music itself does not change at all.
Everything happens in your browser. Your file is never uploaded to a server, and you do not need an account or an install. The file stays on your device from start to finish, and the retagged copy downloads straight to your downloads folder. Your original file is never changed, so you can always go back to it.
How to edit MP3 tags
First, choose your MP3 file. If the file already has tags, the tool reads them and fills in the fields for you, so you only change what is wrong. If the file has no tags, the fields start empty and you fill in everything yourself. Then type the correct values, and press the save button.
The tool builds a new ID3v2 tag block from what you typed, puts it in front of the original audio bytes, and offers the result as a download. Before you download, it reads the new file back and shows you a check table: each tag you typed, what the new file actually carries, and whether the two match. If every row says it matches, the tags are in. If a row differs, save again before you trust the file.
Worked example: a wrongly tagged test file, fixed
Here is a real run through the tool, so you can see exactly what comes out. The test file was a 3-second MP3, 24,532 bytes, carrying the old tags Old Title, Old Artist and Old Album. We opened it in the tool, and those old tags appeared in the fields on their own. Then we replaced them with a new title Headless Song, a new artist Headless Artist, a new album Headless Album, the year 2025, the genre Pop, and track number 4.
The tool built a new file of 24,549 bytes and read it back. All six rows in the check table said they matched: title Headless Song, artist Headless Artist, album Headless Album, year 2025, genre Pop, track 4. A separate check of the downloaded file confirmed the same six tags. The audio part of the file was byte-for-byte the same as before, because the tool only rewrites the tag block and never touches the sound.
Good uses for an MP3 tag editor
The most common use is cleaning up a messy music library. Files ripped from old CDs, or recorded from the radio, often arrive with no tags or with the wrong ones. Fixing the tags means the songs sort by the right artist and album, and voice assistants and car stereos can find them by name.
Podcasters and musicians use the same trick for a different reason. A track with the right title, artist and track number looks professional when a listener opens it, and it files itself correctly in every player. Teachers who share audio lessons can set the album field to the course name, so a whole term of lessons groups together in one place.
Honest limitations
This tool rewrites ID3v2 tags only. It does not change the audio, it does not convert the file to another format, and it does not add cover art. If your file is not an MP3, this tool is not the right one for it. The audio bytes are untouched, which is a feature, not a gap: your music cannot get quieter or noisier from a tag edit.
Some players cache old tags. After you download the retagged file, a player that already knows the old version may keep showing the old title until you remove the file from its library and import it again. That is the player remembering, not the tool failing. The read-back table on this page proves what the new file actually carries, so trust the table over a stubborn player.
Very old players may only read ID3v1 tags, which this tool does not write. Nearly every player made in the last fifteen years reads ID3v2, so this is rarely a problem in practice. If a tag does not show up anywhere, check that the file is really an MP3 and not a renamed file in another format.
Frequently asked questions
Does editing tags change the sound quality? No. The tool writes a new tag block and copies the audio bytes exactly as they were. The sound is identical before and after, because no audio is decoded or re-encoded.
Why does my player still show the old title? Your player cached the old tags. Remove the song from the player library, then import the new file again. The new file carries the new tags, as the read-back table on this page shows.
What if my MP3 has no tags at all? Then the fields start empty, and you fill them in from scratch. The tool works the same way: it builds a fresh tag block and puts it in front of the audio.
Does my file leave my device? No. The file is read in your browser, retagged in your browser, and downloaded from your browser. Nothing is uploaded anywhere, and there is no account to sign into.
Spanish version: Editor de Etiquetas MP3 Online