how-to6 min
Compress PDF for Email — Under 25MB
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By Michael Chen
Quick Answer
FreeConversion compresses your PDFs up to 90% of their original size while preserving visual quality, using 100% local processing via WebAssembly. No uploads, no file limits.
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Reduces PDF size by an average of 78%%
Processing in less than 5 seconds for a 10MB file%
100% of files stay on your device%
Compatible with 99% of PDF readers“Need to email a large PDF? Learn how to compress it under the 25MB limit for Gmail, Outlook, and other services.”
Most email services limit attachments to 25MB. If your PDF is too large, you need to compress it.
Email Attachment Limits
| Email Service | Limit |
|---|---|
| Gmail | 25 MB |
| Outlook | 20 MB |
| Yahoo Mail | 25 MB |
| Apple Mail | 20 MB |
How to Compress PDF for Email
- Open FreeConversion in your browser
- Upload your PDF file
- Select High or Maximum compression
- Check the resulting file size
- Download and attach to your email
What If It's Still Too Large?
- Split the PDF into smaller files
- Use a cloud link (Google Drive, Dropbox) instead
- Remove unnecessary pages before compressing
Best Practices
For professional emails, aim for files under 5MB. Recipients will appreciate faster downloads, especially on mobile devices.