How is this different from editing MP3 tags?

Two ways that matter. FLAC stores metadata as flat KEY=value UTF-8 strings rather than ID3's typed binary frames, so there is no tag-version question and no encoding to pick. And Vorbis comments are legitimately multi-valued — one field can hold several values, which ID3 text frames only fake with separators.

My track has two artists. Will editing the title delete one?

No, and that's a deliberate safeguard. The form shows one box per field, so it can only display the first ARTIST. If you submit that same value back, we treat it as unchanged and leave the full list intact. Type something different and it does replace the list — that's what you asked for by typing one value into one box.

So how do I actually set two artists?

Not from this page — one box writes one value. A desktop tagger such as Kid3, Picard or foobar2000 can add a second ARTIST comment. This tool's job is to avoid destroying the one you already have.

What happens to artwork and lyrics in the file?

They stay. The embedded PICTURE block and the LYRICS / UNSYNCEDLYRICS comments are untouched — this editor only sets the eight fields in the form.

How do I delete a tag rather than change it?

Clear the field and save. An empty value removes the comment entirely rather than storing an empty string.

Why does whitespace disappear from my values?

Values are trimmed on save, the same as the MP3 editor. Padding is invisible in players but breaks sorting and library matching.

What can I put in DATE and TRACKNUMBER?

DATE takes a four-digit year or an ISO date — 1979, 1979-11 or 1979-11-30. TRACKNUMBER takes a number or number/total, like 6 or 6/26. Both are validated in the form before anything is written.

Which fields aren't covered?

DISCNUMBER, COMPOSER, ISRC, ORGANIZATION, REPLAYGAIN_* and any custom key a tagger invented aren't editable here — but they are preserved, because we only assign the keys in the form. For those, use a desktop tagger.

Is there a size or rate limit?

100 MB per file, and 30 uploads a minute from one IP address. A whole-album single-file FLAC will usually exceed the size cap.

FLAC tag editor

Edit Vorbis comments in your FLAC files

Read a FLAC's Vorbis comments into a form and write back the ones you change. Vorbis comments can hold several values per field, and a field you don't actually edit is left alone rather than collapsed to one value.

Input

FLAC with existing tags

Vorbis comments auto-loaded

Output

Re-tagged FLAC

Audio bit-identical

Free · no accountVorbis commentsMulti-value safe

Edit tags

Uploads are deleted automatically
Audio stays bit-identical

FLAC tag editor

Upload a FLAC to load its Vorbis comments into the form. Only the fields you actually change are written back — everything else in the file, including cover art and embedded lyrics, is left untouched.

1 · Choose a file

Choose FLAC fileFLAC · max 100 MB

Pick a file and read its tags to start editing.

See it in action

Vorbis comments, edited safely

Existing comments (auto-loaded)

What you provide

TITLE       = comfortably numb
ARTIST      = Pink Floyd
ARTIST      = David Gilmour   ← second value,
                                not shown in the form
ALBUM       = the wall
ALBUMARTIST =
DATE        = 1979
TRACKNUMBER = 06
GENRE       =

FLAC · 6:23 · 913 kbps · 44.1 kHz

Pink Floyd - Comfortably Numb.flac

What you receive

TITLE       = Comfortably Numb
ARTIST      = Pink Floyd
ARTIST      = David Gilmour   ← kept: the value
                                submitted was unchanged
ALBUM       = The Wall
ALBUMARTIST = Pink Floyd
DATE        = 1979
TRACKNUMBER = 6/26
GENRE       = Progressive Rock

Kept: PICTURE block · LYRICS comment
Audio frames: bit-identical

Step-by-step guide

How to use this tool

01
Upload your FLAC
The comment block is read into the form, along with the file's duration, bitrate and sample rate.
02
Edit what's wrong
TITLE, ARTIST, ALBUM, ALBUMARTIST, DATE, TRACKNUMBER, GENRE and COMMENT. Each field shows the Vorbis key it maps to, so you can see exactly what will be written.
03
Change your mind freely
Every edited field has its own revert, so an experiment in one box doesn't cost you the rest of the form.
04
Save a tagged copy
Named from the artist and title you set — 'Pink Floyd - Comfortably Numb.flac' — so the original stays where it is.

Key features

Why use this tool

Multi-value fields survive

A collaboration is stored as two separate ARTIST comments, and this form has one box per field, so it can only show you the first. Saving a value that matches what was shown is therefore treated as 'no change' and the full list is kept — otherwise editing the title would quietly delete the second artist.

Stays bit-identical

Only the metadata block is rewritten. The FLAC audio frames are byte-identical to your upload, so decoding the output returns exactly the same samples.

One encoding, no guessing

Vorbis comments are UTF-8 by specification. There is no Latin-1 legacy and no encoding byte to get wrong, which is why FLAC tagging rarely produces the mojibake that old ID3 files do.

Flat keys, not typed frames

Every comment is a plain KEY=value string rather than one of ID3's fixed frame types. That's why FLAC files can carry anything a tagger invents — and why this form maps its eight fields onto the conventional uppercase key names.

Common use cases

Who this tool is for

Lossless library cleanup

Fix a mis-tagged rip without pulling the whole album back through a desktop tagger.

Compilation tagging

Set ALBUMARTIST so a various-artists album groups as one record instead of fifteen.

Checking what a tagger wrote

See the real key names in the file when a player and a tagger disagree about what's tagged.

Questions answered

Frequently asked questions

Yes. Only the Vorbis comment block is rewritten; the encoded audio frames are byte-identical to your upload. Decoding the output gives back exactly the same samples.

Keep going

Related tools

Edit Vorbis comments in your FLAC files

FLAC tag editor

1 · Choose a file

Vorbis comments, edited safely

How to use this tool

Upload your FLAC

Edit what's wrong

Change your mind freely

Save a tagged copy

Why use this tool

Multi-value fields survive

Stays bit-identical

One encoding, no guessing

Flat keys, not typed frames

Who this tool is for

Lossless library cleanup

Compilation tagging

Checking what a tagger wrote

Frequently asked questions

Will it stay lossless?

How is this different from editing MP3 tags?

My track has two artists. Will editing the title delete one?

So how do I actually set two artists?

What happens to artwork and lyrics in the file?

How do I delete a tag rather than change it?

Why does whitespace disappear from my values?

What can I put in DATE and TRACKNUMBER?

Which fields aren't covered?

Is there a size or rate limit?

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