Edit audio tags

Change the title, artist, album, lyrics and cover of audio files, many at once, without touching the sound. Free, with no account or uploads.

Drop audio to change its tags

Title, artist, album, track, genre, lyrics and the cover, for one file or many at once, written into MP3, M4A, FLAC, Ogg, Opus and WAV without touching the sound. On your device. You can also paste with ⌘V or Ctrl+V.

Choose files

MP3
M4A
Opus
FLAC
WAV
AIFF
MP4
MOV
WebM

Stays on your device · up to 50 files at once

This page is the Audio editor, opened for changing tags.

What you can do

Trim, fade and change the volumeTo the millisecond, on a waveform you can zoom; every edit can be undone, and your file is never changed.
Every common formatMP3, M4A (AAC), Opus, FLAC, WAV and iPhone ringtones, from those and from AIFF, Ogg and the sound of videos.
Loudness to a standardMeasured as ITU-R BS.1770 does, normalized to −14 LUFS or another target, with a true-peak limiter so nothing clips.
Sound out of videoKept exactly as it is, without being encoded again, whenever the format allows; or converted to the format you choose.
Checked before you downloadEvery file written is opened again and listened to: its length, rate and channels are held against what you asked.
Many files at onceTags and cover art kept, gapless MP3s, a size limit if you need one, and everything in one ZIP.
Nothing is uploadedYour files are read and written in this browser. No account, no limits.

A little help along the way

Follow the steps below. Every option is explained underneath.

Add your filesDrop them, choose them or paste them: MP3, M4A, FLAC, Ogg, Opus, WAV and more.
Change the tagsType in the fields of one file, or choose All files to give them all one album or artist.
Add a coverChoose a JPEG or PNG picture, or take the old one away.
DownloadEach file keeps its own sound, byte for byte, with the new tags. Download one, or all as a ZIP.

Every option explained

Tags: Title, artist, album, album artist, year, track and disc (each with how many there are in all), genre, comment and lyrics. A field left empty is taken out of the file; a field you do not touch is kept exactly as the file has it, with every other tag it holds (chapters, an encoder's notes, ReplayGain and the rest).
Many files at once: Choose All files and what you type goes into every file, such as one album and artist for a whole record; fields that differ between files say so and stay as each file has them until you type in them.
Cover: A JPEG or PNG picture, smaller than 16 MB, put in as the front cover. Taking it away takes every picture the file holds.
Without touching the sound: When the result is the same kind of file (Same as the file, with nothing else changed), only the part of the file that holds the tags is written: ID3 in an MP3, the item list in an M4A, the comment and picture blocks in a FLAC, the comment header in an Ogg or Opus file, and INFO with an id3 chunk in a WAV. The sound is byte for byte as it was, and the page checks it by listening to the result. Files of other kinds, or written in another format, get the tags as they are written.
Same as the file: Keeps the file's own sound as it is, without decoding and encoding it again: AAC goes into an M4A, MP3 stays MP3, Opus and Vorbis go into Ogg, FLAC stays FLAC and plain samples become a WAV. Nothing is lost and it takes a moment. When the rate, the channels or a size limit you chose mean the sound must change, it is encoded again in its own kind; sound that cannot be kept (such as AC-3 from a film) becomes AAC, and the page says so.
MP3: Plays everywhere. Written with LAME at a constant bitrate, with the header that tells players the encoder's delay and padding, so the file is exactly as long as the sound. Below 32 kHz an MP3 holds at most 160 kbit/s.
M4A (AAC) and M4R: Smaller than MP3 for the same quality, and played by every phone and computer. Written with your browser's own AAC encoder, or one that comes with the page when it has none. The encoder's priming is measured and an edit list written, so the sound starts and ends where it should. M4R is the same for an iPhone ringtone, which can be at most 40 seconds long (an alert tone 30).
Opus: The best quality for its size, voice above all. It is always written at 48 kHz. Browsers, Android, VLC and recent Apple devices play it.
FLAC and WAV: Lossless: every sample is kept. FLAC is about half the size of WAV. Choose 16-bit (CD quality), 24-bit, or for WAV 32-bit floating point; FLAC holds at most 24 bits.
Quality: Small, Balanced or High set the bitrate for each format (MP3 96, 192 or 320 kbit/s; AAC 96, 160 or 256; Opus 48, 96 or 160), less for mono. Custom lets you pick the bitrate. These numbers are KeepSimp's own choices.
Sample rate and channels: Keep the file's own, or choose one. When a format cannot hold the rate asked, the nearest it can is used and the page says so. Lossy formats here are mono or stereo, so surround sound is mixed down to stereo for them.
Tags and cover art: Title, artist, album, year, genre and the cover picture go into the new file where its format holds them. Switch it off to write none.
File size limit: MP3, M4A and Opus are written at the highest bitrate that keeps each file under the limit, with room for the container; the page says what it chose. Lossless formats cannot be made to fit a size.
The check: Every file written is opened again and decoded from start to end. Its length, sample rate and channels are held against what was asked, an MP3's size against its bitrate, and a file that came out silent is caught. If something is not as asked, the page says what.
Files the browser cannot read: Some browsers' decoders lack a kind of sound (Safari's lacks FLAC in some places). The page then decodes it with the browser's own player, which plays more kinds, and goes on. AIFF is read by KeepSimp itself. A file nothing here can decode says so.
Privacy: Files are read and written in this browser and never uploaded. There is no account and no limit on how many you convert.

Read the step-by-step guide