PDF
Optimize PDF
Resave a PDF and compare file sizes. A smaller file is not guaranteed.
Free · No sign-up · No subscriptionYour result appears here.
How it works
Select a PDF and compare the file sizes. Already optimized files often cannot shrink further; the original is returned in that case.
Choose your inputs, check the result and download it if needed. Processing happens locally in your browser.
Good to know
These tools do not send your inputs to a server. Your web host processes technical connection data when you visit the site.
PDF objects are reserialized. Images are not downsampled. If the output is larger, the original file is offered.
Password-protected or damaged PDFs are rejected. Editing invalidates PDF signatures.
Is this tool free?
Yes. The available functions require no payment, account or subscription. Technical file limits are shown with the tool.