Compress PDF for Outlook
Fit Outlook's 20 MB attachment ceiling. Locally, in your browser — no upload.
↑ 0 B of your file sent·↓ 0 B (page + engine)·everything happened in this tab
Drop your PDF here
or click to browse· up to 2 GB
Common questions (3)
What's the Outlook attachment limit?
Outlook.com and most Microsoft 365 mailboxes cap attachments at 20 MB. Enterprise tenants sometimes allow more or less — check with your admin.
How do I send a PDF over 20 MB through Outlook?
Either compress it under the limit (use fits.) or attach via OneDrive — Outlook auto-converts large attachments to OneDrive links.
Will compression hurt the document quality?
Embedded photos get downsampled. Text, vector graphics, signatures, and page structure stay pixel-perfect.