How to compress a PDF before emailing it
Get under the attachment size limit without sacrificing document readability.
The oversized-attachment problem
Most email providers cap attachment size around 20 to 25 MB. A PDF containing scans or high-resolution images quickly exceeds that, causing the send to fail.
Choosing the right level
The low setting shrinks size slightly while preserving maximum quality, suited for printing. The high setting aims for maximum reduction, ideal when only on-screen readability matters.
Checking the result
Before downloading, compare the original and final size shown on screen, along with the percentage saved, to pick the level that best fits your need.
After compressing
Quickly open the compressed file to confirm the text stays sharp and readable before sending it, especially for documents with small type or detailed tables.
FAQ
Does compression work on a PDF that's already been emailed several times?
Yes, compression applies to the file's current content, regardless of its sending history.
Can I compress the same file multiple times to shrink it further?
Technically yes, but each successive compression degrades image quality further; it's better to start from the original and pick a stronger level directly.