PDF Version Checker
Upload a PDF to see which version of the PDF spec it was saved as.
Drag a PDF file here, or
How to use it
- 1Upload your PDF file.
- 2See its version, read from the file header.
Is my file uploaded?
No — only the first few bytes of the file are read, entirely in your browser.
FAQ
- Why does the PDF version matter?
- Newer versions support features like better compression or richer forms, but very new versions can occasionally cause compatibility issues with older readers.