# Compress PDF for Outlook

> Compress a PDF for Outlook / Microsoft 365 email attachments locally. Free, no upload, no watermark.

Canonical: https://mypdf.space/compress-pdf-for-outlook
Last updated: 2026-10-26

## Answer

Outlook and Microsoft 365 often enforce smaller attachment caps than consumer Gmail. Compress locally below, then attach. Prefer Keep text when the recipient needs selectable text.

## Limits

- Org policies vary — follow your IT limit when stated.
- Password-protect after compress if the content is sensitive (Confidential Send).

## FAQ

### Outlook says my PDF is too large — what size should I use?

Many orgs land around 10–20 MB or less. When a portal or form states 1–2 MB, use Target size.

### Does this upload to Microsoft?

No. mypdf compresses in your browser; you attach the result in Outlook yourself.

### Safe to email after compressing?

Size is only one risk — also run the privacy checker for hidden data.

## Related

- [Compress PDF for Outlook](https://mypdf.space/tools/compress)
- [Compress for Gmail](https://mypdf.space/compress-pdf-for-gmail)
- [Safe to email?](https://mypdf.space/safe-to-email-pdf)
- [Compress to 2 MB](https://mypdf.space/compress-pdf/2mb)