How to use it
- Drop your PDF into the box, or choose it from your device.
- Pick a resolution and quality under Options if you want a smaller or sharper result.
- Check the size shown beside the result and download it.
How this compressor works
Each page is drawn in your browser and saved again as a compressed image inside a new PDF. This works very well for scans, photographed documents and PDFs full of pictures, where it often cuts the size a lot.
The trade-off you should know about
Because the pages become images, the text in the new PDF can no longer be selected, searched or copied. For a scan that was only images to begin with, nothing is lost. If your PDF is mostly real text, it is usually small already, and this tool will tell you if the result is not smaller and keep your original instead.
Choosing settings
A resolution of 100 dpi gives the smallest files and is fine for reading on a screen. 150 dpi is a good balance. 200 dpi stays sharper for printing. Lower the quality slider for a smaller file, and raise it if you see blocky areas. If the file is still too big, try a lower setting.
Privacy
The whole process happens on your device. Your document is not uploaded, stored or looked at by anyone.
Frequently asked questions
Are my files uploaded anywhere?
No. The work runs inside your browser on your own device. Your files are never sent to our server or to anyone else. You can confirm this in your browser's developer tools: the network tab shows no file data leaving the page.
Why did my PDF not get smaller?
PDFs that are mostly text are already compact, and turning them into images can make them bigger. In that case the tool keeps your original file.
Is the text still searchable afterward?
No. The pages become images. Keep the original if you need searchable text.
What settings give the smallest file?
100 dpi with the quality slider around 50 to 60 percent. Check that the text is still readable.