Finding Out What a File That Will Not Open Really Is
Key points
- Choose the file
- See the detected type
- Fix the extension
Knowing the type from Check a File's Real Type makes it easier to choose an app to open the file.
Steps
- Choose the file that will not open
- Check the "Detected type"
- Add the matching extension and reopen
If it cannot be judged, the file may be damaged or in a special format.
Use "Check a File's Real Type (Extension vs Contents)" (free)
Tools that go well with this
- Check a File's Hash (SHA-256): Calculate a file's hash and compare it.
- Open a ZIP File (Unzip): See what is inside a ZIP and extract the files you need.
- Convert Text Encoding (Fix Garbled Text): Convert text files between Shift_JIS, UTF-8, EUC-JP and more to fix garbled text.