PDF Compressor
Reduce PDF file size while maintaining readability.
Click or drag a PDF here
PDF files only
PDF compression shrinks a document's file size - usually by re-encoding embedded images more efficiently - without changing how many pages it has or what's written on them. It's the go-to fix when a PDF is too large to email, too slow to upload to a portal, or eating up storage space, especially for PDFs built from scanned pages or high-resolution photos.
Frequently asked questions
Text stays crisp since it isn't rasterized. Embedded images are re-compressed, so very aggressive compression can introduce mild quality loss in photos - the tool aims for a balance that keeps images looking good while meaningfully cutting file size.
It depends heavily on the original file - PDFs full of high-resolution images typically shrink the most (sometimes 50-90%), while text-only PDFs are already small and won't shrink much further.
For a specific target size, use the "Compress PDF to KB" tool instead, which lets you aim for an exact size rather than a general compression level.
No - the page count and all content stay the same. Only the internal encoding of images/data changes to take up less space.