DETECT TOOL
FREE ONLINE AUDIO FORMAT DETECTOR
Drop audio • read magic bytes • identify container
——RESULT
AUDIO FORMAT DETECTOR OVERVIEW
Identify an audio file from its header.
Read signature bytes before uploading elsewhere.
Check whether a file is MP3, WAV, OGG, FLAC or M4A.
Canonical path: /audio-format-detector/
SEARCH INTENT
audio format detector online
identify audio file type
check MP3 WAV OGG file
magic bytes audio checker
WHO USES IT
Editors checking unknown audio files.
Developers debugging file uploads.
Creators checking mislabeled downloads.
Students learning file signatures.
PRIVACY HIGHLIGHT
The header is read locally in your browser.
TRY DECODE also runs locally.
No upload is needed to identify the file.
MAGIC BYTES
Many file formats start with known bytes.
WAV usually begins RIFF then WAVE.
OGG begins OggS.
FLAC begins fLaC.
MP3 DETECTION
MP3 may begin with ID3 metadata.
Some MP3s start with frame sync bytes.
That is why confidence can be medium.
M4A / MP4
M4A uses an ISO BMFF container.
The header often contains ftyp.
The brand hints at MP4/M4A family.
CODEC LIMIT
A container is not always the codec.
OGG can contain Opus or Vorbis.
WAV can contain PCM or other codecs.
SUPPORTED SIGNATURES
The detector checks common audio containers.
MP3, WAV, OGG, FLAC, AIFF and M4A are covered.
ASF/WMA and AAC ADTS hints are included.
HEADER EVIDENCE
HEX shows the first bytes of the file.
ASCII shows readable signature characters.
MAGIC reports the matched file marker.
TRY DECODE
TRY DECODE asks the browser to read audio metadata.
It can show duration, sample rate and channels.
Browser codec support varies by device.
UNKNOWN FILES
Unknown means no known signature matched.
The file may be corrupt, encrypted or unsupported.
Try another copy or inspect it in a desktop tool.
PHONE AND TABLET
Use CHOOSE for mobile file picking.
Header analysis is quick and lightweight.
TRY DECODE may be slower on long files.
DESKTOP
Drag files onto the Teletext panel.
Use ESC to return to the detector screen.
Use arrow keys to move through help pages.
WHEN TO USE IT
A file extension looks wrong.
An app refuses an upload.
A download has no extension.
You need quick format evidence.
TROUBLESHOOTING
If type is unknown, the file may be corrupt.
If decode fails, the browser may lack codec support.
Try converting to WAV for compatibility.
RELATED AUDIO TOOLS
Use detection before converting or editing.
PARENT HUB
This page belongs under Audio Converters.
Link from audio utility and converter menus.
SIBLING LINKS
Previous page: 737 Volume Booster
Current page: 738 Format Detector
Next page: 739 Text To Speech
INDEXING NOTES
Clean keyword URL: /audio-format-detector/
Visible heading: Free Online Audio Format Detector.
Robots: index, follow.