Compress a PDF to email it
Get a PDF small enough to attach to an email. Try “Light” first to keep quality; use “Strong” for the biggest reduction. Everything runs locally in your browser — your file is never uploaded to a server.
Drop a PDF here or click to browse
Stays on this device — never uploaded
Choose filesAbout compress pdf for email
Email providers cap attachments — Gmail and Outlook around 25 MB. If your PDF is over the limit, compress it here: Light mode trims the file losslessly, and Strong mode re-encodes pages for the smallest possible size when you need to squeeze under a tight cap.
Everything runs in your browser, so the document you're emailing is never uploaded to a third-party server first.
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Questions, answered
Q.What's the attachment size limit for email?
Most providers (Gmail, Outlook) allow about 25 MB per email. Compress your PDF until it's comfortably under that, using Strong mode if Light isn't enough.
Q.Are my files uploaded to a server?
No. Every operation runs entirely in your browser using JavaScript, so your files never leave your device. Open your browser's Network tab and watch — nothing is sent or stored.
Q.Is it free? Do I need an account or to install anything?
It's completely free with no sign-up, no email and nothing to install. There are no daily limits and no watermarks on your output.
Q.Does it work on Mac, Windows, Chromebook and phones?
Yes. It runs in any modern browser — Chrome, Edge, Firefox or Safari — on Windows, macOS, Linux, Chromebook, iPhone and Android. There is nothing to download.