How to Compress a PDF to Email It (Free)
Most email services cap attachments at around 20–25 MB. Scanned PDFs blow past that fast. Here's how to shrink one in seconds so it actually sends.
You hit send, and the email bounces: attachment too large. PDFs — especially scanned ones full of high-resolution page images — are the usual culprit. Compressing the file solves it without splitting the document or using a file-sharing link.
Compress a PDF in 3 steps
- Open the compressor. Go to the Compress PDF tool.
- Upload your PDF. Drag it in or click to browse.
- Download the smaller file. Attach it to your email and send.
🗜️ Make your PDF email-ready — free
Compression removes redundant data and recompresses images while keeping your document readable.
Compress a PDF →How much smaller will it get?
It depends on what's inside. Scanned and image-heavy PDFs often shrink dramatically, because their page images carry far more data than they need for screen reading. Text-only PDFs are already compact, so they compress less. Either way, the text layer is preserved, so the file stays searchable.
Common email attachment limits
| Service | Attachment limit |
|---|---|
| Gmail | 25 MB |
| Outlook / Microsoft 365 | 20–25 MB |
| Yahoo Mail | 25 MB |
| Many corporate servers | 10 MB |
Still too big?
- Split the PDF and send it in parts.
- Remove pages you don't need with the Organize tool.
- If it's a scan you only need the text from, extract the text and send that instead.
Frequently asked questions
Will compressing ruin the quality?
No noticeable loss for normal reading. Compression targets redundant data and oversized images while keeping the document clear.
Will the text still be selectable?
Yes. The text layer is preserved, so the compressed PDF stays searchable and copy-paste friendly.
Is it free?
Completely free — no sign-up and no watermark.
What if it's still too large?
Split it into parts, remove unneeded pages, or extract just the text if that's all the recipient needs.