PDF Too Large for Outlook? Fix Attachment Limit Instantly

Getting a 'file too large' error in Outlook? Compress your PDF below the attachment limit instantly using the tool below.

🔒 Files never leave your device⚡ Instant processing in browser💸 100% free — no signup

📄

Drop your PDF here to fix upload errors

or click to select file — PDF only

Target size (optional)

targeting 20 MB

⚡ Outlook File Size Limits (Quick Fix)

•Outlook.com limits attachments to 20MB per message.

👉 Fix: Compress your file below 20 MB using the tool above.

About this tool

Outlook has strict attachment limits, and larger PDFs are often blocked or rejected. Compressing the file ensures successful delivery without errors.

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

→Outlook.com limits attachments to 20MB per message.Microsoft Support ↗

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❓ Frequently Asked Questions

Why can't I send a large PDF in Outlook?+

Outlook enforces a strict attachment size limit. Files larger than 20MB are blocked or rejected. Compress your PDF below 20MB before attaching.Source: Microsoft Support ↗

How do I fix the Outlook file size error?+

Compress your PDF below 20MB using the tool above, then re-attach it to your email.Source: Microsoft Support ↗

🔒 Files stay on device·🆓 Free forever·📵 No signup required

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