Compress PDF
Shrink scanned documents and image-heavy PDFs that won't fit in an email or an application form.
This tool runs entirely in your browser; what you enter is never sent to our servers.
How to use it
- Drag your PDF here or add it with “Choose file”.
- Read the warning: pages become images, so text can no longer be selected.
- Press “Compress”, check the saving and save the file with “Download”.
Why compression doesn't help every PDF
This tool turns each page into an image at 150 dpi and builds a new PDF from them. Scanned documents and presentations with high-resolution photos get much smaller: in our own test files, a 15 MB scanned document became 3.4 MB. Text PDFs go the other way, because text takes up very little room to begin with; as images, an 81-page book grew from 366 KB to 18 MB. So if the result isn't at least 10% smaller, we leave the original as it is. The change has a cost: text in the new file can't be selected, searched or copied.