How to use Compress PDF
Choose a PDF, adjust the quality and scale controls, then run compression. The tool renders pages as images and makes a new PDF.
What the result contains
Pages become images, so text can no longer be selected or searched. If compressing would make your file bigger, you get your original file back instead.
Practical tip
Try a lower quality setting for image-heavy scans; keep the original when sharp text or searchable content matters.
Frequently asked questions
Do I need an account?
No account is needed to run this tool.
Are my files uploaded?
No. Compress PDF runs in your browser, so your file is processed on your own device and is not uploaded to our server. The page only downloads the free code libraries it needs.
Should I check the downloaded file?
Yes. Open the result and confirm its pages and content before sharing or deleting your original.