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.
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KB MB targeting 20 MB
⚡ File Size Limits (Quick Fix) • 20MB is the attachment limit for Outlook.com and Hotmail. • 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. 👉 Fix: Compress your file below 20 MB using the tool above.
About this tool Outlook enforces a 20MB limit. Compressing to under 20MB ensures your PDF attaches successfully on Gmail, Outlook, and Yahoo.
How to use this tool Select or drag and drop your file into the tool above. Adjust the settings or target size as needed for your specific requirement. Wait a moment while your file is processed directly in your browser. Download the final file safely to your device. 💡 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.Source: Microsoft Support ↗
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.Source: Microsoft Support ↗
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