Free guide · By Ismail Farooq, founder · Updated
How do I edit MP3 tags online?
The answer
Open an MP3 tag editor that runs in the browser, such as the SongUp AI MP3 Tag Editor below, choose the MP3 and its current tags appear. Type the title, artist, album, year, genre and track number, click Add cover art to pick a JPEG or PNG, then press Save MP3. The new file downloads with ID3v2.3 tags and the audio copied exactly as it was. Nothing is uploaded. On a computer, the free Mp3tag (Windows and Mac) and Kid3 do the same for whole folders.
At a glance
| Fields | Title, artist, album, year, genre, track number, cover art |
|---|---|
| Reads | ID3v2.2, v2.3, v2.4 and ID3v1 |
| Writes | ID3v2.3 + ID3v1.1 |
| Audio | Copied byte for byte, not re-encoded |
Do it here: the free MP3 Tag Editor
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Step by step
- 1
Choose the MP3
The tags it already has are read on your device.
- 2
Edit the fields
Title, artist, album, year, genre and track number.
- 3
Add or replace the cover
A JPEG or PNG; a square image looks best.
- 4
Save MP3
The re-tagged file downloads at once.
Tips
- Name the artist exactly the same on every song of an album, or players split it into several albums.
- Keep the cover under about 500 KB; it is stored inside every song.
Other free ways to do it
Checked 15 October 2026 on each tool’s own site. Free plans change, so check there before you rely on them.
| Tool | Free? | Good to know |
|---|---|---|
| Mp3tag | Yes (Windows, Mac) | Desktop tag editor for whole folders, with online database lookups. |
| Kid3 | Yes (Windows, Mac, Linux) | Open-source tag editor for MP3, FLAC, OGG and more. |
Questions
Is it free?
Yes. It is completely free, with a free account: no limit and no watermark. It runs in your browser, so your audio stays on your device.
Is my MP3 uploaded?
No. The tags are read and written in your browser; the file never leaves your device.
How do I add album art to an MP3?
Open the MP3 in the tag editor, click Add cover art, choose a JPEG or PNG, and press Save MP3. The picture is saved inside the file as the front cover.
Does editing tags re-encode the song?
No. The audio bytes are copied as they are; only the tag is replaced.
Can I tag many files at once?
One file at a time here. For a whole folder, use the free desktop app Mp3tag or Kid3.
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