Doesn't apply to PDF files opened on firefox

[RenatoLopes771]

So if I open a PDF file (a guess that it can also apply to txt or word documents) it doesn't dark the whites, it would be a cool feature to have.

Altough that got me thinking... if there exists an open source program that is like dark reader but for these kind of files, it's just a matter of implementation (and if anyone has found one like that or maybe a plugin link it to me because I would like to download it)

[IgorKrupenja]

Duplicate of #374

[dn7]

Workaround (one click per PDF):
create a new bookmark (bookmarklet) with the following Location (target):
javascript:void(viewer.style = 'filter: grayscale(0%) invert(100%) contrast(100%) brightness(100%)')

Per #374 (comment)
Thanks to @ak0005

[Gusted]

Firefox won't allow us to access pdf pages.

[luo-chuan]

If you use Firefox, you can edit userContent.css like this:

@media (prefers-color-scheme: dark){
  .pdfViewer{filter: invert(1) hue-rotate(180deg);}
}

If you use Chrome or Edge, install the extention "PDF Reader", then edit the extention option like this:

html[data-theme*="dark"] .pdfViewer{
  filter: invert(1) hue-rotate(180deg);
}