Compress PDF Online
Create a rewritten PDF with object streams enabled and compare the resulting file size with the original.
Choose a PDF to compress
The browser will rewrite the PDF locally.
This browser tool does not re-encode embedded images. Some PDFs may become only slightly smaller—or larger—after rewriting.
How to use this tool
- Choose your file or files using the upload area.
- Adjust the available options for the result you need.
- Run the tool and download the generated file.
Browser-first processing
Where the selected operation is supported by the browser libraries used here, the document is processed locally in your browser. Your PDF is not uploaded by the normal tool workflow.
Frequently asked questions
Will every PDF become smaller?
No. Browser-side structural rewriting cannot guarantee a smaller result, especially when the original PDF is already optimized.
Does compression reduce image quality?
This implementation does not intentionally downsample embedded images.