Compress a PDF for UAC
UAC takes PDFs up to 5 MB. PDF Desk shrinks yours to just under it, right in this tab.
Max 5 MBPDF
Files stay on this device. Nothing is uploaded.
UAC (Universities Admissions Centre) upload limits
| Document | Max size | Min size | Formats |
|---|---|---|---|
| Supporting document upload (per PDF) Up to five documents per qualification or course preference; 'smaller than 5 MB' so aim below 5120 KB. | 5 MB | — |
Where this number comes from
“Each PDF document must be smaller than 5 MB.”
— How to upload documents | UAC. Checked October 2026.
PDF Desk aims at 4.8 MB, a little under the limit, because some portals count 1 KB as 1,000 bytes.
If the file will not get small enough
Scan in black and white at 150 DPI instead of colour. Remove blank and duplicate pages with Delete pages. If the portal allows several files, cut the PDF with Split PDF and upload the parts.
Other portals in Australia
Limits of other portals
Questions
What is the maximum PDF size for UAC?
Supporting document upload (per PDF): 5 MB. Source: uac.edu.au, checked October 2026.
UAC still rejects my PDF. Why?
Check that it is not password-protected, that the file name has no special characters, and that it is a few percent under the limit — some portals count 1 KB as 1,000 bytes.
Are my PDFs uploaded?
No. PDF Desk opens and writes the file with JavaScript inside your browser tab. Nothing is sent to a server, so it is safe for contracts, IDs and bank statements.