Optimize · 2 min read
How to Reduce PDF File Size for Email
Check PDF size against email limits and choose between structural optimization and stronger target-size compression.
Quick steps
- Open Compress PDF. Go to pdfoncall.com/compress.
- Drop your PDF. Any size — everything runs locally in your browser.
- Optimize the file. Click Compress & download; this compacts file structure without re-encoding page content.
- Download. Check the downloaded size against your email provider's limit before attaching it.
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?
Savings vary; no percentage reduction is guaranteed. The standard compressor does not recompress images. If structural optimization is insufficient, try Compress to exact size and review the rasterized output.
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.