FLAC Audio — Lossless audio codec with open-source licensing.
Quick facts
What is .flac
A .flac file is a FLAC Audio — Lossless audio codec with open-source licensing.
In the mime-db registry it maps to audio/x-flac. When serving .flac over HTTP, set the Content-Type header as shown in Developer info below.
Related entities: it maps to audio/x-flac — and is delivered over HTTP via the Content-Type header.
How to open .flac files
Developer info
When served over HTTP, responses should set the following header:
Content-Type: audio/x-flac
Common software that reads/writes .flac:
Relation chain
Related extensions
Related MIME types
Common uses
How to edit .flac files
How to create .flac files
Frequently asked questions
Common options include VLC, Audacity, foobar2000. You can also open many of these files with built-in viewers or a browser.
Create a new file in any text editor or the app that owns the format and save it with the .flac extension.
audio/x-flac is the media type identifier used for .flac files during network transfer (for example in the HTTP Content-Type header).
Sources & standards
Updated 2026-08-18
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