File Requirements Validator

About this validator

Before you upload to an application, admission or assignment portal, check your files against its rules. Copy the rules into the form (allowed types, smallest and largest file size, exact or minimum and maximum pixel size, most PDF pages), drop your files and see pass or fail for each, with the reason. Nothing is uploaded.

How it works

• The real file type is read from the first bytes of the file, not just its name, so a PNG renamed to .jpg is caught and you get a note.
• Image width and height are read as your browser shows the image, with phone photos turned the right way up. PDF pages are counted by reading the file.
• Forms count a kilobyte as 1000 or 1024 bytes and rarely say which. Choose the one you think applies, and if a file is close to the limit, check with both.
• Up to 50 files at a time, 100 MB each. The results update as soon as you change a rule.

Common questions

Are my files uploaded?

No. Your browser reads each file on your device. Nothing is sent to our server.

A file passes here but the portal still rejects it. Why?

Portals can have rules that are not listed, or count sizes differently. Read the portal's instructions again, and check that you entered its limits exactly.

How do I fix a file that fails?

Use the Image Compressor to make a file smaller, the Image Format Converter to change its type, or the PDF Merge & Split tool to remove pages.