Pdf Background Colour Change Glasses

Pdf background colour change glasses

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Pdf background colour change glasses

Its quite common that one wishes or has to read lots of PDF files which are intended to be printed, but since one would read them only once, and one wishes to save some trees, one reads them on Acrobat Reader , evince , xpdf or whatever your choice. It would be an advantage to be able to control the background's color.

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Instead of black text on white background, I'd like to have a gray background. By googling I just get the inversion of colors as suggestion — which is sometimes even worse for the eyes.

Add, replace, or edit a background

Is there a pdf reader allowing me to change background color without changing the color of the text? Edit: The first comment below suggests it depends on the file. Therefore I added to the title arXiv 's.

Works with several pdf files I have from arxiv, but perhaps unsurprisingly, doesn't work with pdf files that are simply scans of pages. There is another possibility.

For all pdf (including image-based) files

Install zathura. It is highly configurable and of course it allows changing the color of the background and the text. For help go to the Arch forums. Look here for mouse and key bindings. Click Ok.

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You can read about it in the man page, but I just made an alias, since I usually open PDF files from the terminal which I basically never close while I am doing anything in my computer. With most of the tools already mentioned under this question, only pdf files made out of text files and not of scanned 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.

In case the available text is a pdf formed of images e. There, the only possible color change of image-based pdf-s is inverting colors with viewers that have that option: Evince , Okular as said in previous answers Qoppa-PDFStudioViewer , xpdf with the -rv argument, see here , mupdf here.

Pdf background colour change glasses

There are exceptions, though, viewers that can do more than just inverting colors or changing only the background:. Thus, a scanned pdf text can be read with different color profiles, just like an epub can in an ebook reader. The limitations of this tool are that for the moment version 2. Having a large white area on the screen all the time while reading beats the purpose of improving readability, so I prefer other solutions. Most ebook readers offer color settings for page and font , but only some of them can open pdf documents.

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As far as I can tell they do not display the text as well as a pdf viewer in all cases. I have tested only two:. Bookworm - it has 3 color profiles but each profile can be edited fully adjustable colors for background and fonts under Preferences. Poor pdf text rendering in the document tested by me - sometimes lacking spaces between words and wrong display of non-English accented characters. Calibre's Ebook Viewer - better rendering of pdf text very few problems with the same document tested in Bookworm.

Color settings are accessed by opening a book, right-clicking, then selecting Preferences - Colors.

Update a recently edited background image

The quality of pdf display in an ebook reader may depend on the pdf too. I have noticed that, when trying to open a pdf, ebook readers run pdftohtml tool.

Pdf background colour change glasses

Considering its installation outside KDE, bringing that many dependencies looks problematic to me, but I may be wrong. In Xfce, it wants to install of them. Trying to install as Flatpack: ,8 MB will be downloaded in total. Okular can invert colors.

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It cannot change the font color, only that of the background strictly what the OP asks: dimming the color of the page a bit. The page color cannot be set too dark, or it will get as dark as the font. I think pdf documents can be made much more readable with other tools mentioned under this question, which can modify both page and font color.

I very much doubt Okular is the best tool for the purpose of readability, given that not only the above, but any other color combinations can be achieved by other methods. Install pdf-tools from melpa and enable pdf-view-midnight-minor-mode in pdf-view-mode. The default color for midnight mode is light grey on dark blue but this can be changed by configuring pdf-view-midnight-colors , eg.

Ubuntu Community Ask! Home Questions Tags Users Unanswered. Is there a pdf reader allowing me to change background color of arXiv pdfs? Ask Question. Asked 5 years, 7 months ago.

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Active today. Viewed 32k times. From ubuntuforums. It supposedly has this feature. True but the development of KPDF stopped in I believe it is hard to install it in a recent OS. Reading white characters on black background is better, please check this on Nature. You can do this in Okular if you don't mind pulling in kde dependencies. Jason Conti Jason Conti 2, 1 1 gold badge 14 14 silver badges 15 15 bronze badges.

Is there one? For scans of pages like my textbook pdf , the Invert Colors color mode works really well. It inverts the image colors as well obviously, but for most diagrams that doesn't matter.

This is exactly what I was looking for. Who knows an option like this is hidden in the Accessibility options. Disclaimer: I am in no way related to the development of zathura. I am just a happy user.

Marduk Marduk 4 4 silver badges 5 5 bronze badges. Thank you so much for mentioning Zathura, it's really great! Note for others: don't forget to install zathura-extras package in order to get support for djvu and ps. The given answer based on okular is perfect. Another option is to configure Acrobat Reader to do that. Adobe Reader 9 can do much more than Okular to improve readability. Okular cannot change font color as such, only inverts colors.

Have you noticed? I discovered this option in it several years ago. Old xpdf'er Old xpdf'er 21 1 1 bronze badge. Inmate Inmate 5 5 silver badges 12 12 bronze badges. The OP specifically mentioned that the color of the text should not be altered.

I once tried to modify Evince's source code to allow choosing the colors, but the way it was written requires non-trivial code refactoring to achieve that. The OP doesn't like inverted colors - which is sometimes even worse for the eyes - and so just wants the background a little darker. But the above answer is still useful in general. B Most ebook readers offer color settings for page and font , but only some of them can open pdf documents.

I have tested only two: Bookworm - it has 3 color profiles but each profile can be edited fully adjustable colors for background and fonts under Preferences.

About Okular Considering its installation outside KDE, bringing that many dependencies looks problematic to me, but I may be wrong.

The best thing that can be achieved with Okular is something like this: I very much doubt Okular is the best tool for the purpose of readability, given that not only the above, but any other color combinations can be achieved by other methods.

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How to Change PDF Background Color

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Pdf background colour change glasses

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Pdf background colour change glasses

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