Compress PDF for Gmail (25MB)
Use the Gmail 25MB preset to keep attachments deliverable.
Fit-or-split result: get one PDF that fits, or a ZIP of parts under the limit.
Email presets: Gmail 25MB, Outlook 20MB, Outlook.com 25MB, plus custom size.
Private by default: files auto-delete after 60 hours; we don't store document contents in logs.
How it works
Upload
Pick a PDF and a target limit.
Process
We optimize and split as needed.
Share
Download a single file or parts.
Gmail compression FAQ
Does Gmail's limit include encoding?
Yes. Email encoding adds overhead, so we leave a safety margin. See email-ready tips.
What if the file is still too big?
We can split it by size so each part fits.
Share with confidence
Best for Gmail sharing
Perfect for invoices, portfolios, and design reviews.
Faster downloads for recipients.
Gmail resources
See the Gmail attachment limit guide for details on size caps.
If your PDF is still large, use split by size or follow the make a PDF under 25MB guide.
Related tools
All PDF tools
Browse every PDFThin tool in one place.
Email-ready compression
Shrink PDFs to Gmail/Outlook limits with quality control.
Split by size
Split large PDFs into size-safe parts.
Organize PDF
Merge, rotate, delete, reorder, and split pages.
Popular guides
All PDF guides
Browse every step-by-step PDF guide.
Compress PDF for email (complete)
Step-by-step workflow for Gmail 25MB and Outlook 20MB limits.
Reduce scanned PDF size
Keep text readable while shrinking scanned documents.
Split PDF by size
Create parts that stay under a target MB limit.
Rotate PDF pages online
Fix page orientation for sideways scans or photos.