PDF Tools
Compress PDF Online
Reduce PDF file size while maintaining quality. Browser-based compression with no server upload.
PDF compression in your browser
This tool uses pdf-lib to optimize PDF structure and compress images within the document. All processing happens locally, so your files never leave your device. Choose your compression level based on your needs: low for maximum quality, medium for balance, or high for smallest file size.
Questions
How much can I compress a PDF?
Compression depends on the PDF content. Image-heavy PDFs can often be reduced by 50-80%, while text-only PDFs may see smaller reductions.
Will compression affect quality?
The tool uses standard PDF compression that maintains readability. Some image quality reduction may occur at higher compression levels.
Is my PDF uploaded to a server?
No. Compression happens entirely in your browser, so your file never leaves your device.