Compress PDF for Email
Maximum compression — 96 DPI — optimized to fit Gmail and Outlook limits
Drop your PDF here
Maximum compression preset — optimized for Gmail and Outlook
Get under Gmail's 25 MB limit. No upload, no account, no file size cap.
Maximum compression — 96 DPI — optimized to fit Gmail and Outlook limits
Every major email service caps the size of attachments. A PDF that feels small on your desktop can hit these limits the moment you try to attach it.
| Email Service | Attachment Limit | Notes |
|---|---|---|
| Gmail | 25 MB | Auto-links via Drive above limit |
| Outlook.com | 20 MB | Personal accounts |
| Office 365 / Exchange | 10–25 MB | Set by IT admin — often 10 MB |
| Yahoo Mail | 25 MB | Per email message |
| Apple Mail / iCloud | 20 MB | Can use Mail Drop for larger files |
The size of a PDF is almost always determined by its embedded images — not the text. A 50-page scanned document can be 30 MB because each page was saved as a full-resolution photo (200–400 DPI). For screen reading and email, this resolution is excessive; you need 72–96 DPI at most.
PDFree's compression works by re-encoding embedded images at a lower quality level you control:
Text, fonts, and vector graphics are not touched — they remain crisp at any zoom level regardless of the quality setting you choose.
Go to pdfree.io/compress-pdf/. No account or signup required.
Drag and drop your file or click "Choose files". Select a compression quality — Medium is recommended for email. Your file stays in your browser throughout.
Click "Compress PDF". The compressed file downloads directly — ready to attach to your email. The original is untouched.
Your PDF is too large to email?
Compress it now — free, no upload, no account needed.
Compress PDF for Email| PDFree | iLovePDF / SmallPDF | Adobe Acrobat | |
|---|---|---|---|
| Price | Free | Free (limited) | $14.99/mo |
| File uploaded to server | Never | Always | Yes (cloud plan) |
| Daily task limit | None | 2 per day (free) | Unlimited (paid) |
| File size limit | None | 25 MB (free) | Unlimited (paid) |
| Works offline | ✓ Yes (PWA) | ✗ No | Desktop only |
If even "Low quality" compression doesn't bring the file under your email's attachment limit, you have two options:
Gmail allows 25 MB, Outlook.com allows 20 MB, and Yahoo Mail allows 25 MB per email. Corporate email servers (Office 365, Exchange) often set limits between 10 and 20 MB set by the IT department.
Typically 40–75% for scanned documents and image-heavy PDFs. Text-heavy PDFs (Word exports, reports) compress 20–40%. The exact result depends on image content and the quality setting you choose.
Yes. PDFree compresses files entirely in your browser — no file is ever transmitted to a server. Contracts, financial documents, and medical records stay on your device throughout.
No. Text in PDFs is vector data and is not affected by image compression settings. Only embedded images are compressed. Text remains sharp at any zoom level.
Currently PDFree compresses one PDF at a time. For batch compression, compress each file individually — there are no daily limits or task caps.
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