PDF Too Large to Upload? How to Get Under the Size Limit
Job portals, school forms and government sites cap uploads at a few MB. How to get a PDF under the limit in minutes, and which setting to pick.
· 4 min read
You filled in the application, scanned your documents, and on the last step the portal says "file too large". Job sites, universities and government services almost always cap uploads, usually somewhere between 1 and 5 MB. A single page scanned with a phone can blow past that on its own.
Why is the file so big?
A scanned PDF is really a set of photos wrapped in a PDF. Phone cameras produce 3–5 MB per image, so a ten-page transcript easily reaches 30–40 MB. In PDFs made from text, the culprit is usually large embedded images.
Step by step: getting under the limit
- Open Compress PDF and drop in your file. It is never uploaded; the work happens on your device, which matters for IDs, diplomas and payslips.
- Start with the medium setting (around 120–150 DPI). That is plenty for documents read on screen.
- Check the new size the tool shows. Still above the limit? Lower the quality one step.
- Before downloading, check the preview: text must be readable and stamps and signatures clear.
If it still will not fit
- Remove pages you do not need. Blank backs of pages and extra attachments add weight. Drop them with Delete PDF pages.
- Upload documents separately. If the form accepts several files, one PDF per document is easier than one huge file. Use Split PDF if needed.
- Shrink photos before making the PDF. If you photographed the pages, running them through Compress Image first and then Image to PDF often gives the smallest result.
One thing to keep in mind
Compression re-encodes scanned pages. In a PDF with selectable text, this can make the text no longer selectable. Upload portals rarely care, but always keep your original file.
Open: Compress PDF, free, and your file never leaves your device.