PDFThis

PDF too big to email.

Gmail says 25 MB. Outlook says 20 MB. Here's the fix.

Free tool

Open the tool — drop a photo, get a clean PDF in under 10 seconds.

Make a smaller PDF

The problem

You hit Attach, wait for the upload bar, and get rejected. Gmail caps attachments at 25 MB. Outlook caps at 20 MB. Many corporate Exchange servers cap at 10 MB. Your PDF is 32 MB because it's a stack of phone photos at full resolution — and Gmail won't even let you send it; it tries to force you into a Google Drive link instead.

The fix

If your PDF is a stack of phone photos turned into a document, PDFThis is the fix at the source. Rebuilding the PDF from the original photos with proper downscaling produces a 1-3 MB file that emails cleanly — same visible quality, ~10× smaller. If your PDF came from somewhere else and you just need to compress it, that's a different tool. Either way, you'll be under any email service's limit in seconds.

What you get

  • Gmail caps email attachments at 25 MB and silently nudges you to send a Drive link above that — many recipients miss those links or can't access them.
  • Outlook.com is 20 MB; corporate Exchange is often 10 MB; your work email may reject anything over the smallest of these.
  • A PDF built from raw phone photos is typically 5-15× larger than it needs to be — the photo resolution is far higher than any PDF reader can display anyway.
  • PDFThis rebuilds the PDF at 2400px (around 280 DPI at Letter) — visually identical, but small enough to fly through any email gateway.

Questions

Related

Photo to PDF.
Phone camera in. Clean PDF out.
JPG to PDF.
Photos in. Clean PDFs out.
Combine images into PDF.
Many photos in. One clean PDF out.

Ready to convert one?

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Make a smaller PDF

Last updated: May 2026