PDF compressionupload limitsexport
How to compress a PDF for upload limits without making it unreadable
What to check when reducing a scanned PDF for a 1MB, 3MB, 5MB, or 10MB upload portal.
Many upload portals set a file-size limit. The goal is not just to make a PDF smaller; the goal is to keep the document readable enough to be accepted.
Check the target limit first
Common targets include 1MB, 3MB, 5MB, and 10MB. Boreal PDF is designed around choosing a target size before export so you can match the portal instead of guessing.
Inspect the important details
- Names, dates, addresses, and amounts
- Signatures and stamp-style marks
- Page order in multi-page documents
- Barcodes, QR codes, or reference numbers when they matter
Do not chase the smallest file
A smaller PDF is not useful if the recipient cannot read it. Preview the result after compression and make sure the important areas still look clear.
When OCR is part of the workflow
If you plan to export a searchable PDF, verify OCR before and after compression. Printed text usually works best; glare, handwriting, skew, and low light can reduce accuracy.