Reduce the size of a PDF so it fits an upload limit or an email attachment, with a compression level you choose.
How to compress a PDF
- Choose a PDF.
- Pick how hard to compress it.
- Download the smaller file.
What happens to your file
- Never kept
- Your original is wiped the instant the conversion finishes.
- 60 minutes
- The result is deleted automatically — or the moment you say so.
- No watermark
- Nothing is ever stamped on your document.
- No sign-up
- Five conversions a day free; an account simply removes the limit.
Questions
How much smaller will my file get?
Scanned and image-heavy PDFs commonly drop by 50 to 90 percent. A PDF that is mostly text is already small and may barely change.
Will the document look worse?
Stronger compression lowers image resolution, which shows when you zoom in. For reading on screen the difference is usually invisible; choose a higher-quality level if the document will be printed.
Why did my file not get smaller?
Some PDFs are already optimised, and compressing them again gains nothing. Your original is unchanged, so simply keep it.
What happens to the files I upload?
Your original is deleted the moment the conversion finishes, whether it succeeded or not. The converted file stays available for 60 minutes so you can download it, then it is deleted automatically. You can also remove it instantly with the Delete file now button.
Do I need an account, and is there a watermark?
No account is needed for five conversions a day, and a free account removes that limit. Nothing is ever stamped on your document — there is no watermark on any tool, signed in or not.
Does it work on a phone?
Yes. Everything runs in the browser on a phone, tablet or computer, with no app or plugin to install.