Compress PDF
Try a lossless structural tidy-up to reduce PDF file size.
Your files stay on your device. Free. No sign-up.Drop your file here
PDF · up to 25 MB per file
Your files stay on your device. No upload needed.
Structural optimisation only. Scanned or already optimised PDFs may not shrink. You’ll get the original if it is smaller.
How to compress pdf
- Choose a PDF to optimise.
- Run the structural optimisation.
- Download the result, or the original if it is already smaller.
What you can use
One unencrypted PDF, up to 25 MB and 500 pages. No image downsampling or text rasterisation.
A little extra help
Why did my PDF not get smaller?
Pictures often account for most of a PDF’s size. This tool preserves their quality and only optimises the document structure, so already efficient files may not shrink.
What if the tool cannot process my file?
Check the supported formats and limits above. A smaller file or an up-to-date desktop browser may help. Encrypted, damaged or unusually complex files can be unsupported. Your original file is not changed.