Compress PDF
Try lossless structural optimization. Savings depend on the source PDF. Files are processed locally in your browser for supported tools.
How to optimize a PDF file: Choose one PDF and run the optimizer. Compare the original and output sizes; this tool performs structural optimization and does not recompress embedded images. Keep an original copy of important documents before editing or converting them.
How to use this tool
Choose one PDF and run the optimizer. Compare the original and output sizes; this tool performs structural optimization and does not recompress embedded images.
Frequently asked questions
Will this always make my PDF smaller?
No. Savings depend on the source file. Some PDFs may stay similar in size or become slightly larger.
Does it reduce image quality?
The current optimizer does not recompress embedded images, so it is not a lossy image-compression service.
Can I keep my original file?
Yes. The optimized PDF is downloaded as a new file; keep your original if you need to compare results.
Check the result before sharing it. Conversion quality and supported features can vary with the source file and browser.