SqueezePDFCompress PDF for emailfree & private
Email providers cap attachments — 25MB on Gmail, 20MB on Outlook, and many corporate servers stop well below that. This tool shrinks your PDF in the browser so it slips under the limit, without ever uploading the file.
Drop PDF files here
or click to choose files
100% private — files never leave your device
Getting under the attachment limit
Most PDF weight comes from scanned pages and embedded images. The compressor re-samples those images to a lower resolution and re-encodes them, which usually cuts a bulky attachment by 70–95% while the text stays sharp. If you need to hit an exact ceiling, switch to Target size and pick a limit like 1MB or 5MB — it keeps the best quality that still fits.
Compress to an exact size
Compress a PDF anywhere
Frequently asked questions
What size should a PDF be to email it?+
There's no universal limit, but staying under 10MB keeps you safe with almost every provider and corporate filter. Gmail allows 25MB and Outlook 20MB. Smaller is always better for recipients on slow connections or strict inboxes.
How do I make a PDF small enough to attach?+
Drop it into the tool above and download the compressed copy. For a hard limit, use Target size and choose 1MB or 5MB; the tool tries several quality levels and keeps the highest one that fits.
Is it safe to compress a confidential attachment here?+
Yes. Compression runs entirely in your browser, so the PDF is never uploaded. That makes it safe for contracts, invoices and other documents you'd never send to an unknown server.
Will compressing lower the quality for the recipient?+
Text and vector graphics stay crisp at every setting — only embedded images are downsampled. Balanced (72 DPI) looks clean on screen, which is how most emailed PDFs are read.
Do I need an app or sign-up?+
No. It's a free web page with no account, no watermark and no install. Once loaded it even works offline.