See your track's file info before you publish
Duration, sample rate, channels, estimated bitrate, and ID3 tags — free, private, right in your browser.
Drop an audio file here or click to add
MP3, WAV, FLAC, M4A
Why check your file info before you publish
Before you upload a track anywhere, it helps to know exactly what you're sending — the sample rate, whether it's mono or stereo, roughly how it was encoded, and whether the title/artist tags are actually set. Distribution platforms and DAWs both read this information, and getting it wrong (missing tags, an unexpectedly low sample rate) causes problems downstream that are annoying to trace back.
ID3 tags: title, artist, album
AI music generators and quick exports don't always fill in ID3 tags, so a track can show up with just its filename as the title everywhere it's played. This tool reads the ID3v2 tag embedded in MP3 files (when present) so you can confirm what's actually set before you publish.
Why bitrate here is an estimate, not a fact
Web Audio decodes a file to raw audio samples and discards the original bitrate entirely — there's no way to read it back exactly. What this tool shows is file size divided by duration, which is accurate for constant-bitrate (CBR) MP3s but only a rough approximation for variable-bitrate (VBR) or lossless files. Treat it as a sanity check, not a spec sheet.
How to check audio file metadata
One step: drop the file. Everything happens locally in your browser — your track is never uploaded to a server.
1. Drop your track
MP3, WAV, FLAC, or M4A. The file is decoded with the Web Audio API and scanned for ID3 tags — nothing leaves your device.
2. See everything at once
Duration, sample rate, channels, estimated bitrate, file size, and any ID3 title/artist/album/year tags.
3. Fix and re-check
Missing tags or a lower sample rate than expected? Fix it in your DAW or tagging tool and re-check — or head to mastering and a lyric video for the same track.
Where file info matters
Checking metadata before you publish catches problems that are much more annoying to fix after the fact.
Distribution & uploads
Distributors and platforms often reject or flag files with unusual sample rates or missing metadata — check before you submit, not after a rejection email.
Organizing a library
A library full of tracks with missing or wrong ID3 tags is a mess to browse. Spot-check files before importing them into your player or DAW.
Troubleshooting playback issues
A file that won't play right in some app is sometimes a sample-rate or channel-count mismatch — checking the raw file info is the fastest way to rule that in or out.
Frequently asked questions
Audio file metadata, answered.