I have millions of files like
report.bin which are maybe a Word file or maybe a PDF file.
I can not trust the filename extension.
Also, I must distinguish between PDF/A and PDF/X, and other distinct formats that are often saved with overlapping filename extensions.
- Free always, for any use. Ideally open source
- Identify as many file formats as possible, using only the file's data/metadata
- Works on Linux, Mac, and Windows
- Works offline
- Must be usable from a script or program, any library interface or command-line interface is fine
TrID is not free for commercial use.