Upload portals often limit PDF size. This tool re-compresses the images inside your file to genuinely shrink the PDF while keeping the text readable.
It depends on the content. Scanned and image-heavy files usually shrink the most.
Choose light or medium if quality matters most, and strong if you just need the smallest file.
Yes. It is completely free and needs no sign-up.
Files used with free tools are not kept on the server; they are deleted right after processing.
Yes. Kajino works on phones, tablets and computers in every browser, with nothing to install.