How to Compress a PDF for Email (Free, Browser-Based, 2026)
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Quick Answer
To compress a PDF for email: upload to FileCurve PDF Compressor and choose "Medium" compression. Gmail and Outlook both cap attachments at 25MB — Medium compression typically reduces PDFs 70–80%, so a 30MB PDF fits under 10MB easily. Use "High" if multiple PDFs need to fit together.
Step-by-step
- 1
Upload your PDF to FileCurve PDF Compressor.
- 2
Pick "Medium" compression for single PDFs.
- 3
Use "High" if you are sending multiple PDFs together.
- 4
Verify output is under 25MB (Gmail, Outlook, Yahoo limit).
- 5
Attach and send.
Expected output
Format
PDF, balanced quality
Quality setting
Medium (recommended) or High for multi-file emails
Estimated size
20–30% of original
Why you might need this
- →Sending invoices, contracts, reports over Gmail or Outlook
- →Multi-file PDF emails to clients
- →Corporate Exchange with 10MB caps
- →Yahoo Mail 25MB limit
Troubleshooting
Gmail says "attachment too large" at 23MB
Gmail's 25MB cap includes the email body. Compress further or use Google Drive (Gmail suggests this automatically above 25MB).
Outlook Exchange cap is different
Corporate Exchange caps vary (often 10MB or 20MB). Use "High" compression for safety.
Frequently asked questions
What is the Gmail attachment limit?
25MB per email total (all attachments combined). Above this, Gmail auto-switches to Google Drive link.
Does Outlook have a different limit?
Outlook.com: 34MB. Outlook Exchange corporate: often 10–20MB. Compress to under 10MB to be safe.
Is there a way to email PDFs above 25MB?
Use Google Drive, Dropbox, or WeTransfer links. Or compress aggressively with FileCurve.