See my linked answer on Foxit Reader, which can match the two above but has no dark GUI and no full-screen.Ĭalibre Ebook Reader (like many ebook readers) can edit colors of font and page, but it can also open text-based pdfs.īy the way: in case somebody needs to transform a scanned text saved as image-pdf so that it becomes more readable by removing colored (gray, yellowish or pinkish) background, a good tool is ScanTailor, as described here. Just for text-based pdfs, Adobe Reader 9 can separately set both font and page colors (when it can still be used in Linux: more here). Qpdf can change both text and background color but only in text-based pdf files - and that in a rather odd manner: only background/"paper" color can be set directly, the font color can only be "inverted" from white to black: so, the trick is to set the direct color in such a way as to result in a desired color when inverted (see this answer, which provides an example of good setting for a proper dark mode result: Background color: #41403b, Paper color: #cccbca). 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. It works if current font (Arial in the sample above) is installed in the system. Master PDF Editor has Automatically change font when editing text option in Settings Editing tab. Master PDF Editor More details in this answer, also A simple workaround for this kind of issue is to use Object Inspector to change font family for text object youd like to edit. PDF readers that can change both page and text color in both text and image (scanned text) pdf files are: Simply inverting colors doesn't provide the best readability (being limited to very bright white text on very dark black background), although it can improve it a lot in a dark environment.Įvince and also pdfstudioviewer can do that, which will result in something like this (in both image and text pdfs):
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