Optimize · 2 min read

How to Reduce PDF File Size for Email

Get any PDF under Gmail's or Outlook's attachment limit without losing quality.

Quick steps

  1. Open Compress PDF. Go to pdfoncall.com/compress.
  2. Drop your PDF. Any size — everything runs locally in your browser.
  3. Choose Recommended. Best balance of quality and size for email.
  4. Download. Attach the smaller PDF to Gmail, Outlook, or Yahoo — under the limit.

Email attachment limits

  • Gmail: 25 MB
  • Outlook.com: 20 MB (per email), 34 MB total
  • Yahoo Mail: 25 MB
  • Corporate Exchange: often 10 MB

How much smaller?

Text-heavy PDFs typically shrink 30–50%. Image-heavy PDFs (scans, brochures) can shrink 60–80%.

Still too big?

Use Split PDF to send in parts, or share a cloud link instead.

Ready to try it?

Free — 3 tasks a day, no card required. Upgrade any time.