To send a large PDF, keep an original copy, check what the recipient needs, and upload the approved version to FileFlap. Share the download link with a short description of the document. This avoids forcing a detailed report, drawing set, or scanned portfolio into an email attachment.

Decide whether the PDF needs to shrink
A document meant for screen review can often use smaller images than a print-ready brochure. Ask whether the recipient will read, annotate, print, or edit the file. If they need production-quality artwork, sending the original may be better than compressing it aggressively.
Save any optimized version under a new filename. Adobe provides a guide to reducing PDF file size. After optimization, inspect small labels, photographs, and scanned text at a realistic reading size. A smaller file is not useful if its details become unreadable.
Check the document before uploading
- Confirm the page count and order, including appendices.
- Open bookmarks and important links.
- Check that comments and annotations are appropriate for the recipient.
- Test form fields if the document is meant to be completed.
- Review visible content and document properties for information that should not be shared.
For a signed document, preserve the signed original and avoid processing it casually. If you make changes, verify the signature status again in the intended reader. Keep a separate review copy when a different format or smaller version is required.
Send the PDF with clear instructions
Use a filename such as Project_Report_2026-07_v02.pdf. Upload the checked file, wait for completion, and test the recipient link. In your message, include the filename, approximate download size, and whether feedback should be returned as comments or in a separate document.
If a document belongs with spreadsheets or supporting images, deliver them together in a clearly organized package. Explain which PDF is the main document. Splitting a report into several PDFs can help separate audiences, but it also creates more files to track and can break cross-document references.
Verify the received version
Download a test copy and open it in a PDF reader, especially if the browser preview looks incomplete. Check the first and last pages, then a page with detailed graphics. Ask the recipient to confirm the version before starting a review so feedback does not land on an outdated draft.
Will putting a PDF in a ZIP make it much smaller?
Not necessarily. Many PDFs already contain compressed images. A ZIP can bundle related documents neatly, but its size reduction may be small. Choose the delivery method based on the actual final size.
Choosing a service for your next delivery? Our WeTransfer alternative guide starts with FileFlap and explains the delivery features to compare.
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