Compress PDF for Email Attachment
Reduce PDF size to fit email attachment limits. Works with Gmail (25MB), Outlook (20MB), and other providers. No upload needed.
What problem does this solve?
Email providers have attachment size limits — Gmail allows 25MB, Outlook allows 20MB, and many corporate email systems are even stricter. This tool compresses your PDF to fit within those limits.
Who needs this?
- Anyone trying to email a PDF that's too large to attach
- Professionals sharing contracts and reports via email
- Students emailing assignments to professors
How to use this tool
- Upload the PDF
Select the PDF that's too large for your email.
- Choose compression level
Pick a preset based on your email provider's limit (25MB for Gmail, 20MB for Outlook).
- Compress
The tool reduces the file size on your device.
- Attach to email
Download and attach the smaller PDF to your email.
Upload one PDF file
Drag and drop files here, or browse from your device.
Compression options
Use the full tool
This guide uses our Compress PDF tool. Visit the main tool page for all features and options.
Related guides
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FAQ
What is Gmail's attachment limit?
Gmail allows attachments up to 25MB. Files larger than that are automatically shared via Google Drive links.
What about Outlook's limit?
Outlook allows up to 20MB for attachments. Some corporate Outlook setups may have lower limits.
Can I compress multiple PDFs for one email?
Yes. Compress each PDF separately, or merge them first with our Merge PDF tool and then compress the combined file.