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Compress PDF

Compress PDF

Reduce your PDF file size.

•Up to 90% size reduction
•Preserves text sharpness
•Ideal for email attachments
•No watermarks added
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Tap to add PDF

How to compress PDF files online for free?

1Upload your PDF using the upload box, Google Drive, Dropbox, or OneDrive.
2Choose your compression level - Low for near-original quality, Medium for the best balance of size and clarity, or Extreme for the smallest possible file.
3Click the Compress button. Our engine analyses the file, re-encodes embedded images and streams, and trims away anything redundant.
4Download your compressed PDF instantly, or save it directly to Google Drive, Dropbox, or OneDrive.
5Continue working with the smaller file in any other tool - merge, split, sign, or convert without re-uploading.

Why choose our PDF compressor?

Three Compression Levels
Pick Low, Medium, or Extreme depending on whether you care more about quality or size. You stay in control of the trade-off.
Smart, Quality-Aware
Text stays sharp. Images are re-encoded intelligently so the document still looks clean, even after extreme compression.
Batch Processing
With a free account, compress up to 3 PDFs at once (120 MB total). Each file gets its own size comparison so you can see exactly how much you saved.
Honest About Already-Optimised Files
If a PDF is already heavily compressed, we tell you - rather than pretending to shrink it further. No fake savings.
Email & Upload Ready
Smaller files mean faster email attachments, quicker form uploads, and less time waiting on slow networks.
Cross-Platform
Works entirely in your browser on any device - Windows, Mac, Linux, iPhone, or Android. No software to install.
Private & Secure
Files are processed on our secure server and deleted within 1 hour. We never store, share, or read your documents.
No Account Required
Upload, compress, and download - no sign-up, no email, no subscription. Just the tool you need, instantly.
Workflow-Ready
Pass the compressed PDF straight to Merge, Sign, Convert, or any other tool. No re-uploading, no detours.

Frequently Asked Questions

How much smaller will my PDF actually get?

It depends on what is inside. Image-heavy PDFs can shrink by 60-90%. Text-only PDFs typically shrink 10-30%. You will see the exact before/after size after each compression.

What is the difference between Low, Medium, and Extreme?

Low keeps near-original quality with modest size savings - best for archival. Medium is the recommended balance for most uses. Extreme strips the file down to the smallest possible size, useful when bandwidth is tight or upload limits are strict.

Will compression reduce the quality of my document?

Text stays crisp at every level. Images may be re-encoded - imperceptible on Low, slight at Medium, noticeable but still legible at Extreme.

Can I compress multiple PDFs at the same time?

Yes. Batch processing is available with a free account - up to 3 files at once, 120 MB total. Single file compression works without signing in.

Is there a file size limit?

Without an account: up to 80 MB per file. With a free account: batch up to 3 files at once (120 MB total).

Is this PDF compressor really free?

Yes. No signup, no watermark, no hidden charges.

Are my files kept private?

Files are processed on our secure server, encrypted in transit, and deleted within 1 hour. We never read, copy, or analyse them.

Can I compress password-protected PDFs?

Yes - we will ask for the password to open the file, but we never store it.

Does compression work on scanned PDFs?

Yes, and scanned PDFs often see the biggest savings because they are typically image-based.

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