Compress a PDF for SlideRoom
SlideRoom takes PDFs up to 10 MB. PDF Desk shrinks yours to just under it, right in this tab.
Max 10 MBPDF
Files stay on this device. Nothing is uploaded.
SlideRoom upload limits
| Document | Max size | Min size | Formats |
|---|---|---|---|
| Portfolio document / PDF (default per file) Default limit; an institution can set a different one on its Portfolio step. Images under 5 MB, video under 250 MB, audio under 30 MB. | 10 MB | — |
Where this number comes from
“Documents must be less than 10 MB (unless otherwise stated on the Portfolio step).”
— Working with Media and Your Portfolio | SlideRoom Applicant Help Center. Checked October 2026.
PDF Desk aims at 9.7 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 United States
Limits of other portals
Questions
What is the maximum PDF size for SlideRoom?
Portfolio document / PDF (default per file): 10 MB. Source: help.liaisonedu.com, checked October 2026.
SlideRoom 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.