Gmail limits attachments to 25MB, Outlook to 20MB, and Yahoo Mail to 25MB. If your PDF is over the limit, you need to compress it. Here's how to do it in under 30 seconds — no software needed.
Email Attachment Limits by Provider
| Email Provider | Attachment Limit |
|---|---|
| Gmail | 25MB |
| Outlook / Hotmail | 20MB |
| Yahoo Mail | 25MB |
| iCloud Mail | 20MB |
How to Compress a PDF for Email
- 1. Open FileCurve's PDF Compressor
- 2. Upload your PDF (drag & drop or click to browse)
- 3. Choose compression level: Balanced for most PDFs, Maximum for large files
- 4. Click "Compress PDF"
- 5. Download and attach to your email
Tips to Get Smaller PDFs
- ✓ Remove unnecessary pages — use Split PDF to extract only the pages you need
- ✓ Compress images inside the PDF — PDFs with photos are usually much larger than text-only PDFs
- ✓ For files over 25MB — use Google Drive or WeTransfer links instead of email attachments
What Compression Levels Mean
- Screen (72 DPI): Smallest size, good for reading on screen. Not suitable for printing.
- eBook (150 DPI): Good balance. Works for email and on-screen reading.
- Printer (300 DPI): Print quality maintained. Larger file size.