Extreme Compress PDF — Free Online Tool

Extreme Extreme Compress PDF aggressively reduces the size of large PDF files by rasterizing pages at low resolution with strong JPEG compression for maximum size reduction. Choose Extreme / Ultra / Maximum level. Output is image-based, then download the smaller file. Ideal for emailing documents, uploading to portals with size limits, or archiving scanned papers. PDFStudio Pro runs compression 100% in your browser — no uploads, no account, no watermark. Compatible with modern desktop and mobile browsers.

Open Extreme Compress PDF tool now

Step-by-step instructions

Open Extreme Compress PDF.
Upload your PDF.
Choose a compression quality level.
Download the smaller PDF and compare sizes.

Supported formats

PDF (.pdf).

Privacy & security

Files are processed locally in your browser. We do not operate an upload endpoint for this tool. Temporary data is released when you leave the page. The site is served over HTTPS. See our Privacy Policy.

Pricing & workflow

Price: Free forever — no limits, no watermark. Workflow: open tool → add file(s) → process in browser → download. Works offline for most operations once libraries are loaded. Compatible with Chrome, Edge, Firefox and Safari on desktop and mobile.

Frequently asked questions

Is Extreme Compress PDF free?

Yes. Unlimited use, no registration, no watermark.

Are my files uploaded?

No. Processing is 100% in-browser.

Can I use it on mobile?

Yes, on modern mobile browsers.

Is there a file size limit?

We do not set a server limit. Practical limits depend on your device memory.

Does it add a watermark?

No. Output contains only your content.