Check a file before you upload it
See the real format, size, pages and known problems, compared with your form's rules.
- Completely free
- No hidden charges
- No sign-up
- File never leaves your device
Coming soon
Check my file is being built
It will work here, in your browser, like every FileFixKits tool. In the meantime, try a tool that is ready now.
See tools you can use nowHow it works
Check my file in three steps
- 1
Add the file you plan to upload.
- 2
Pick the requirement or type the limits.
- 3
Read the result, then fix anything that failed.
Good to know
A pass covers what can be measured. The authority still reviews the content.
Questions people ask
Why does the form say my file is invalid?
Common causes are the wrong real format, a password, or too many pages. This check shows which.
Does checking change my file?
No. Checking never changes anything.
This tool is completely free.
No charges, no hidden fees, no subscription, no trial and no commitment. No card details are ever asked for.