Compress PDF Online
Try a basic browser-side PDF optimization pass. This tool rebuilds the PDF structure and removes editable metadata where possible without uploading your file.
Drop one PDF here
Accepted file: PDF. Maximum size: 25 MB for stable browser processing.
How to use
How to compress a PDF online
Choose a PDF, run the browser optimizer, compare file sizes, then download the optimized PDF if the result is useful.
1. Upload PDF
Select a PDF file from your device.
2. Optimize
The browser rebuilds the PDF and removes editable metadata where possible.
3. Download
Compare the size change and save the optimized PDF.
Compress PDF FAQ
Will this always reduce PDF size?
No. This is a basic browser optimizer. Already optimized PDFs or PDFs made mostly of images may not shrink much.
Are my PDF files uploaded?
This tool is designed to run the optimization in your browser using a client-side PDF library.
Why not promise huge compression?
Strong PDF compression often requires image recompression, font handling, and server-side processing. This page is intentionally honest about the current browser-side limits.