How to Compress a PDF Online
Organize · Free tool
Reduce PDF file size for email, uploads and storage — directly in your browser.
Steps
- Upload your PDF on the homepage.
- Open the Compress tool from the toolbar or homepage card.
- Choose a compression level if options are shown.
- Click compress and wait for processing to finish.
- Click Download PDF to save the smaller file.
Tips
- Scan-heavy PDFs shrink the most.
- Compare file size before and after in your downloads folder.
- If quality looks too low, try a lighter compression setting.
Frequently asked questions
Will compressing reduce quality?
Our compressor optimizes images and structure to shrink file size while keeping documents readable. Always review the output before sharing.
Is there a file size limit?
Very large files may hit server upload limits. If upload fails, try splitting the PDF first or compressing in smaller batches.