PDF readers, beside Master PDF Editor and Zathura: text files saved/exported/printed as pdf) (A) Thus, a scanned pdf text can be read with different color profiles, just like an epub can in an ebook reader. With an image/scanned text, a value of #3b3537 for the page color and #b0afac for the font color gives this: Zathura - with settings like those mentioned in this older answerĬan change color of both pages and fonts even in image-based pdf files.Then, for easy access, configure toolbar and add Toggle change color. In newer versions of Okular (like 1.9.3) both font and page colors can be edited - and a dark-mode look can be enabled - through a new and rather non-intuitive setting, under Configure Okular - Accessibility - Color mode: Change Dark and Light Colors, by selecting a light color for dark and a dark one for light color option. a book or article scanned/photocopied and saved as pdf) There are exceptions, though, viewers that can do more than just inverting colors or changing only the background: For all pdf (including image-based) files There, the only possible color change of image-based pdf-s is inverting colors with viewers that have that option: Evince, Qoppa-PDFStudioViewer), xpdf (with the -rv argument, see here), mupdf ( here). paper that was scanned) the pages will in many cases show paper-like black-on-white text (even if images are extracted and converted to an ebook format as said here). In case the available text is a pdf formed of images (e.g. With most of the tools already mentioned under this question, only pdf files made out of text files (and not of scanned/photocopied text saved as image) can be treated so that colors of page and fonts (or at least of page, as expected by the OP) are changed.
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