Compress PDF for Email — Free File Size Reducer
Gmail, Outlook, and most email providers limit attachments to 25MB. Larger PDFs get blocked or bounce. Compressing your PDF before attaching it avoids delivery failures and makes emails faster to send and receive. Our compressor runs entirely in your browser — your PDF is never uploaded to any server.
Recommended setting: Balanced — Gmail blocks attachments over 25MB. Use Balanced compression to get most PDFs well under that limit while keeping them readable.
Drop your PDF here or click to browse
PDF files only · Any size
🔒 100% Private
Your PDF never leaves your device. All compression happens in your browser.
Frequently Asked Questions
What is the email attachment size limit for PDF files?
Gmail limits attachments to 25MB. Outlook allows up to 20MB for most accounts. Yahoo Mail allows 25MB. If your PDF exceeds these limits, it will be rejected or you will need to use a file-sharing link instead.
How do I compress a PDF to send by email?
Upload your PDF to our free compressor, choose Balanced compression, click Compress PDF, then download the compressed file. Most PDFs compress by 50–70%, bringing them well under email limits.
Will the compressed PDF look professional in an email?
Yes. Balanced compression produces a PDF that is visually identical on screen. Charts, tables, and text all render cleanly when the recipient opens it.
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