ManamoPDF

Your file stays on your device. The files you choose are processed in your browser and are not sent anywhere. The page runs all its library and font files from its own files; no requests to external servers are made during processing.

Files over 50 MB show a warning; you can still process them.

Files over 150 MB, or selections totalling over 150 MB, are not processed.

Files with 500 pages or more show a warning. Large files can take a long time and may strain your device’s memory.

PDF to Grayscale

Converts every page to grayscale and keeps the original page size. Colored images and text become shades of gray.

Each page is converted to an image, so the text in the resulting PDF cannot be selected or searched.