Compress PDF Online Free
Reduce your PDF file size. Upload one PDF and download a smaller version.
Drop a PDF file here
or
Your files never leave your browser
How to Compress a PDF
Upload PDF
Select or drop the PDF file you want to compress.
Compress
Click Compress and wait while we optimize the file in your browser.
Download
Download your smaller PDF and see how much space you saved.
Frequently Asked Questions
How much can I reduce the file size?
Results vary depending on the PDF content. Files with many images typically compress more than text-heavy documents.
Will compression affect quality?
Our tool optimizes the PDF structure without re-encoding images, so visual quality stays the same.
Is my file uploaded to a server?
No. Compression happens entirely in your browser. Your file never leaves your device.
Reduce PDF File Size Without Losing Quality
Large PDF files can be difficult to email, upload, or share. Site95's free PDF compression tool optimizes your document structure to reduce file size while preserving visual quality. Perfect for shrinking scanned documents, presentations, and image-heavy PDFs.
Also need to merge PDF files or extract pages from a PDF? Explore our other free tools on the homepage.