Compress PDF Online
Optimize and rewrite the document for a smaller file.
100% processing in your browser. Your files never leave your device.
How Compress PDF Online works
Put the PDF on the belt
Any PDF, including long scans. The scanner counts the pages before processing starts.
Optimised rewrite
pdf-lib rebuilds the document using object streams and strips redundant structure, keeping the text selectable and the pages intact.
Compare the sizes
The output shows the percentage you gained. If the PDF was already optimised the gain will be small — that is expected, not an error.
Why PixlPulse
Privacy
Contracts, invoices and paperwork stay on your computer, not on someone's server.
Free
No account, no page limit and no watermark on the finished document.
Offline
pdf-lib runs locally, so you can work on a plane or with no signal.
Fast
No server-side queue to wait in — it starts the moment you pick a file.
About Compress PDF Online
PDF compression reduces a document's size while keeping the content readable — ideal for emailing or uploading to platforms with strict limits. This tool rewrites the document's internal structure and optimizes embedded images, all locally in your browser. The result is a smaller PDF file, no watermark, no extra software to install. Useful for scanned contracts, image-heavy reports, or PowerPoint exports that end up unreasonably large.
Frequently asked questions
No, compression runs entirely in your browser. The PDF file is never uploaded anywhere.
It depends on the content — PDFs with many scanned images can shrink by 50-80%. Already-optimized documents have little room for improvement.
No, text stays vector-based and perfectly readable. Only embedded images are optimized.
Yes, the tool supports batch processing for multiple files in the same session.