Telling docx, xlsx and pptx Apart
Key points
- Choose the file
- Check the type
- Add the extension
Check a File's Real Type looks inside, using the fact that docx, xlsx and pptx are ZIP files.
Steps
- Choose the file with no extension
- Check whether it is Word, Excel or PowerPoint
- Add the matching extension and open it
Old formats (doc, xls, ppt) are shown as "Old Office document".
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.