Edit ID3 tags and embed album cover art into your audio track.
Yes. Editing audio metadata and ID3 tags on FormatGrid is completely free, with no watermarks, file limits, or account sign-up required.
Nowhere. Your audio files never leave your device — FormatGrid never uploads, transmits, or stores them on any server. All metadata editing happens locally in your browser's memory and is discarded once you close or refresh the tab.
FormatGrid writes standard ID3v2 tags directly into your MP3 audio files. You can edit Title, Artist, Album Name, Release Year, Genre, Track Number, and attach custom front cover artwork (JPEG or PNG). ID3v2 is the tagging standard built for MP3, so for the most reliable results, use MP3 source files.