Compress PDF

Recompresses embedded images and optimizes the document's internal structure. Free, no signup.

No signup required — start immediately
Real document security, not just a marketing label
Completely free, no hidden limits

Click to select a PDF file

or drag and drop

Add copyright notice — FreeEmbeds a hidden copyright notice in the file's metadata and page content. No account needed.

Add a watermark — FreeStamps visible text diagonally across every page. No account needed.

Password protect — FreeLocks the result with real AES-256 encryption. No account needed.

Disable copy & select — FreeOpens normally, no password needed — just blocks copying text or images out of it in readers that respect PDF permissions. Not foolproof (screenshots and some tools ignore this), but stops the one-click copy-paste path. No account needed.

Compress PDF — GuardedProFingerprints the compressed result — if it leaks, you can trace which copy it was. You still get your own direct download, plus a share link to send instead of the raw file. Sign in to enable

This is just the start — Pro also gets you, from £4/month

•Revoke access instantly, even after it's been opened
•Invisible fingerprinting on every document
•Photo verification on open — approve or deny in 60 seconds

+9 more Pro features, from £4/month →

How to compress a PDF

Upload the PDF you want to shrink.
Click "Compress PDF." You'll see the percentage saved once it's done.
Download the smaller file — nothing about the page content or layout changes.

Common reasons to compress a PDF

Getting a scanned document under an email attachment size limit
Shrinking a portfolio or report PDF for a slow connection
Reducing storage size across years of archived PDFs

FAQ

How much smaller does a file typically get?

It depends heavily on the content — image-heavy scans shrink the most, while text-only PDFs are already small and may barely change.

Does compression reduce image quality?

Images get recompressed to a smaller size, similar to standard JPEG compression. Text and vector content stay exactly as sharp.

Is there a file size limit?

No hard cap on the free tier.