About this tool
This tool works best on scanned documents and image-heavy PDFs. It rebuilds each page as an optimised image, so the file gets smaller but text can no longer be selected. If compression would not make your file smaller, you are told and your original is kept.
How to use Compress PDF
- Add the PDF you want to make smaller.
- Choose a quality level. Balanced suits most documents.
- Select Compress PDF, compare the new size and download the result.
Frequently asked questions
Will my PDF lose quality?
Pages are saved as images, so some detail is lost. High quality keeps text crisp, while Smallest file is best when size matters most.
Why can I no longer select text after compressing?
Each page becomes an image during compression. Keep your original if you need to select or search the text.
Is there a file size limit?
There is no set limit. Large PDFs need more memory, so a desktop browser handles them better than a phone.