Audio Metadata Viewer
Inspect what's really inside your music and recordings. This viewer reads ID3 tags (MP3), Vorbis comments (FLAC), RIFF INFO (WAV) and iTunes atoms (M4A) — titles, artists, encoders, cover art, duration, sample rates — locally in your browser, with full editing when you need it.
What the viewer shows for each format
MP3 — ID3 tags
All ID3v2.2/2.3/2.4 frames with friendly names (Title, Artist, Album, Composer, Publisher…) plus the legacy ID3v1 tail when present. Cover art frames are decoded and shown as the file's thumbnail; private frames, play counters and rating frames are flagged for privacy.
FLAC — Vorbis comments
Every KEY=value entry (TITLE, ARTIST, DATE, REPLAYGAIN…), the vendor string, embedded pictures with their dimensions, and stream facts from the STREAMINFO block: sample rate, channels, bit depth and exact duration.
WAV — RIFF INFO
The LIST/INFO chunk (Name, Artist, Product, Date, Comments, Software, Engineer…) and any ID3 chunk embedded by modern tools, along with PCM format details — sample rate, bit depth, channel layout — and computed duration.
M4A — iTunes atoms
M4A audio is an MP4 container: the viewer reads the same iTunes-style atoms as video files — title, artist, album, year, track, tempo, compilation flags and cover art — alongside timescale-based duration.
Every format supports editing values, adding tags and stripping everything — with zero re-encoding of the audio stream.
Audio metadata FAQ
How can I check an audio file's bitrate and duration?
Drop it in — the File Information section computes duration from the stream (FLAC/WAV exactly, MP3 from the MPEG header) and shows sample rate, channels and bit depth where available.
Why do my tags look garbled in some players?
Usually an encoding mismatch in older ID3v2.3 tags. The viewer detects each frame's declared encoding and displays it correctly; saving after an edit rewrites text frames as UTF-8, which every current player reads.
Can I remove personal info from voice recordings?
Yes — recorders often stamp software, dates and even device names into WAV or M4A files. Delete those fields or use “Remove All Metadata”; the voice audio itself is untouched.
Does the viewer upload my music?
No. Parsing, editing and saving happen entirely in your browser tab. It works offline after the page loads once.