Change background color for PDFs. [Linux.]

[aik_au]

I am trying to make that #fffffff white less white, hurts in a dark room I went through a bunch of recipes and addons which can change background for html (not always but quite often they do work) but none worked for PDFs. The maximum they can was sidebar or toolbar or background _around_ pages but not the pages themselves. Is it achievable at all?

[morat]

Similar thread: http://forums.mozillazine.org/viewtopic ... p=14873910

Read replies by jscher2000.

You can change the pdfjs.textLayerMode pref to 0. That removes the shadow or double font in my test.

DISABLE: 0
ENABLE: 1
ENABLE_ENHANCE: 2

You can change the pdfjs.viewerCssTheme pref to 2 for dark theme.

AUTOMATIC: 0
LIGHT: 1
DARK: 2

Reference
http://searchfox.org/mozilla-release/so ... iewer.html
http://searchfox.org/mozilla-release/so ... /viewer.js
http://searchfox.org/mozilla-release/so ... viewer.css

[aik_au]

oh cool, this did it:

Code: Select all

canvas {
  filter: brightness(0.8) !important;
}

thanks!