18Docs

Make a PDF small enough to email

People whose PDF is too big to send by email? Here is the quick, free way to do it — right in your browser, with nothing uploaded.

Open Compress PDF

How to do it

  1. 1Open the Compress tool below — it runs in your browser, so your file stays on your device.
  2. 2Drop in your PDF, or tap to pick it.
  3. 3We make it smaller right away, then you download it.

Why this helps

Big PDFs are slow to email and often get bounced. This makes the file smaller while keeping it clear to read. It all happens in your browser — nothing is uploaded.

Common questions

Is it free?
Yes. It is free, there is no signup, and there is no watermark.
Are my files safe?
Yes. This works inside your browser, so your file never leaves your device. We do not upload or store it.
Open Compress PDF