Compress PDF for email
Shrink a PDF under 20 MB so it attaches in Gmail and every version of Outlook.
Drop a PDF, or choose a file
PDF files of any size.
Your file never leaves your device
Email limits
| What | Official limit | Source |
|---|---|---|
| Gmail, personal | 25 MB total per emailOver the limit, Gmail swaps the file for a Google Drive link. | support.google.com |
| Outlook.com | 25 MB per file | support.microsoft.com |
| Outlook desktop app | 20 MB total for Outlook.com, Gmail and other internet accounts | learn.microsoft.com |
Limits verified Oct 2, 2026 against official sources.
Report an outdated limitWhy files fail on Email
Scanned documents and photo heavy PDFs easily pass 20 MB, the limit of the Outlook desktop app. Gmail and Outlook.com stop at 25 MB.
What this preset does
This preset recompresses the images inside the PDF until the file is under 20 MB, keeping text sharp and selectable.
Questions
- Why is my PDF so big?
- Usually because of scanned pages or photos. Each scanned page is a full size image.
- Will the text stay sharp?
- Yes. Only images are recompressed; text and vector graphics are untouched.
- Is it safe for confidential documents?
- Yes. The PDF never leaves your device.