Compress PDF to 20MB

20MB is the most conservative email attachment limit. Compress your PDF to under 20MB and it'll send on any platform.

📄

Drop your PDF here

or click to upload — PDF only

Target size (optional)

targeting 20 MB

💡 Good to know

→20MB is the attachment limit for Outlook.com and Hotmail.Microsoft Support ↗
→A PDF under 20MB will attach successfully on Gmail (25MB), Outlook (20MB), and Yahoo Mail (25MB).
→Scanned PDFs are typically 1–5MB per page at 300dpi. A 10-page scanned document can easily exceed 20MB.

❓ Frequently Asked Questions

Is 20MB safe for all email providers?+

Yes. Gmail allows 25MB, Outlook 20MB, and Yahoo 25MB. A PDF under 20MB will attach on all three.

Why is my scanned PDF so large?+

Scanned PDFs store each page as a high-resolution image. At 300dpi, a single A4 page can be 1–3MB. Compressing reduces image quality slightly but keeps the document readable.

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