Compress PDF for Email — Stay Under Gmail & Outlook Limits
A scanned contract, a design brief, a multi-page report — these PDFs balloon fast. Gmail caps total attachments at 25 MB, Outlook at 20 MB, and many corporate Exchange servers at just 10 MB. Use FileCrisp to compress any PDF in seconds — no Adobe, no upload, nothing stored on any server.
Email Provider Attachment Limits
| Provider | Limit | Safe Target |
|---|---|---|
| Gmail | 25 MB | < 20 MB |
| Outlook / Hotmail | 20 MB | < 15 MB |
| Yahoo Mail | 25 MB | < 20 MB |
| Apple Mail / iCloud | 20 MB | < 15 MB |
| Corporate Exchange | 10 MB (typical) | < 8 MB |
| ProtonMail | 25 MB | < 20 MB |
Which Compression Level to Choose
| PDF Type | Level | Reduction |
|---|---|---|
| Text-heavy PDF (contracts, reports) | Balanced | 10–40% |
| PDF with mixed images + text | Balanced | 30–60% |
| Scanned document (image PDF) | Strong | 60–90% |
| Image-only PDF (photos) | Strong | 50–85% |
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How to Compress PDF for Email (Step by Step)
- 1
Open FileCrisp Compress PDF
Go to the Compress PDF tool. No Adobe, no account, no software install required.
- 2
Upload your PDF
Drag your PDF onto the tool or click to browse. Processed entirely in your browser — nothing is sent to any server.
- 3
Choose compression level
Select Balanced for text-heavy PDFs (contracts, reports). Choose Strong for scanned documents or PDFs with large embedded images.
- 4
Download and check the size
Download the compressed PDF. The tool shows you before and after file sizes. If you need it smaller, run it again on Strong mode.
- 5
Attach to your email
Attach the compressed PDF in Gmail, Outlook, or any email client. Confirm the total attachment size is under your provider's limit before sending.
When Compression Isn't Enough
Use cloud storage for very large PDFs
If your PDF is over 10 MB even after compression, share it via Google Drive, Dropbox, or OneDrive link instead of an attachment. Paste the link in the email body.
Split multi-page PDFs
A 50-page report often compresses much better when split into sections. Compress each section separately, then send multiple emails if needed.
Reduce image quality inside the PDF
The biggest gains come from PDFs with embedded high-resolution images. Use Strong compression and image quality will be reduced — but it stays readable on screen.
FAQs
Frequently Asked Questions
Everything you need to know — answered plainly.
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