Compress PDF for email

Get any file to the size you need. Privately.

1 Compress the PDF here and note the download’s size.2 Attach it and read the limit the mail app itself displays.3 If it is still too big, remove pages or images on this device, or split the packet.

About this tool

Mail apps refuse attachments that are too large, and the number depends on the provider and the account. This page does not print a limit it has not re-checked on that provider’s help page. Compress here, then read the size next to the warning your mail app displays when you attach. If the mail app offers a shared link, that upload belongs to the mail company. You can attach the local download instead.

Compress PDF for email stays on this device. The download is the copy you keep, and Weesize does not store a second one. Close the tab when you are finished and the bytes are gone.

  • No upload: shrinking happens before you attach, so this compressor is not the mail provider.
  • Speed: the file does not travel to a server and back, so the wait is only the work itself.
  • Quality: the original is kept when the new file would be worse or is not actually smaller.
FAQ
Does “Compress PDF for email” upload my file?

Compress PDF for email reads the file in this tab. There is no upload step and no account.

What will “Compress PDF for email” actually change?

The file gets smaller only as far as its images allow. A shared-link button in the mail app is that app uploading, if you accept it.

When is “Compress PDF for email” the wrong job?

Do not trust a compressor built into a mail page if you cannot see where the file went.

How do I check the result of “Compress PDF for email”?

The mail app should show a size when you attach. Compare it with the warning on that screen, and send yourself a test if the packet matters.

Can I run “Compress PDF for email” with Wi-Fi off?

Load this page, then turn Wi-Fi off and run Compress PDF for email again. A finished result is the proof that the file was not sent anywhere.

Compress PDFCompress PDF to 1 MBCompress PDF to 2 MBSplit PDFCompress imageMerge PDF

Compress images for emailWhy is my PDF so large?Is it safe to upload PDFs to online tools?

Last updated 2026-09-27.