Hidden text scan · audio
What text is hiding in this recording?
An audio file is not only sound. Mixed in with the samples there is often readable text: the encoder that made it, the tags, and sometimes a message or even another file hidden after the audio data. This pulls out every readable string so you can see it.
Runs entirely in your browser. Your file is never uploaded or stored.
Scanning…
Why there is text inside a recording
Audio formats carry more than samples. An MP3 holds ID3 tags, a FLAC and an Ogg hold comment fields, and most encoders stamp their own name and version into the file. All of that is plain, readable text sitting inside the file, which is why a scan of almost any recording returns something. Most of it is ordinary boilerplate, so the value is in spotting the string that does not belong.
What to look for
Scan for anything out of place: a message, a name, a URL, a file path from someone's computer, or
the header of a second file such as a PK ZIP archive or another media header
appended after the audio ends. A block of readable text far down the file, past where the sound
data should stop, is the classic sign of data smuggled inside a recording. Raise the minimum
length to cut the short noise strings and make a real message stand out.
What it does and does not prove
This finds readable ASCII text only. It will not surface data that is compressed, encrypted, or hidden in the audio samples themselves, which is a different technique. And a surprising string is a lead, not a verdict, since encoders and editors write all sorts of internal text. Confirm the file really is what it claims with the true file type check, and browse the full tool set for the rest.