Compress a PDF for email

How to shrink a PDF so it emails

1. Drop the PDF above. The target is preset to Under 10 MB, which most email services accept. Change it if you need smaller.
2. Click Compress, then download the new copy.
3. Attach the downloaded file (it ends in -compressed.pdf), not the original.

How big can an email attachment be?

It depends on the service, and on the receiver’s service too. At the time of writing Gmail and Yahoo Mail allow about 25 MB of attachments per message and Outlook.com about 20 MB. Many company mail servers set lower limits, often 10 MB. Files also grow when they are encoded for sending, so a file right at the limit can still bounce. Aiming well under the limit is the safe choice. Check your provider’s help page if you are unsure.

What if it still will not fit?

• Try a smaller target, such as Under 5 MB.
• Split it into two emails with Split PDF.
• Remove pages the reader does not need with Remove pages.
• Send a link instead from a cloud drive you already use.

Why use a tool that does not upload?

Email attachments are often private: contracts, medical forms, tax papers, bank statements. Most online compressors work by uploading your file to their server. FilesStay does the work in your browser, so the document goes from your device to your email, and nowhere else.