Only works on a small handful of sites. Most do nothing or invert just a small section.

Works great on most pages .. But you have to remember to disable this if you like watching youtube videos in fullscreen mode (else you just get a blank screen).

I just want to say Thank You to the developer, I have crazy sensitivity to brightness and this extension saves me a ton of headache and I love you

Does what it says, it inverts images witch I wish it didn't, it will also be disable when typing.

Works as described. There is a problem, though. It really slows down certain webpages. Especially HTML video. Videos are less video and more slide-show.

For me, white text on a black background is very hard on the eyes. After just a few seconds of reading such text, I can see ghost images when I look away. This extension now makes those pages readable!

Excellent addon. It's possible invert color for each tab.

Works well and doesn't break sites the way some similar extensions do. Especially like being able to not invert pictures while inverting everything else. Only request would be to add a whitelist feature. Some sites that are already dark you want to keep dark, instead of inverting them (and thus making them white). Add a whitelist option and it's perfect!

Something about key hypotenis requires

La extensión es buena sufro de la vision y desde que la instale mis ojos no han sufrido ha sido un alivio doy gracias a sus creadores

Simple and effective, it's what I want.

2018
I think it's easier on my eyes to have white print on black background. I tried an add-on that just darkens the browser windows, but that's just similar to the brightness adjustment on the computer.

Inverting the webpage colors changes most black-print on white-background to white-print on black-background, which is much less like staring at a light bulb. (It doesn't work on addons.mozilla.org.)

And then, if you throw in color content, the result of color inversion is a little psychedelic. I like it.

The add-on adds a little icon in the toolbar. So it's easy to turn the inversion off and on with a quick click.

2019
Thanks to the add-on author, Max, for replying to my review. Max wrote:
> Firefox does not allow plugins to alter addons.mozilla.org pages for security reasons.

True. That's Firefox's problem :) And it's a real problem with their ALL WHITE PAGES that need color-inversion as much as anybody.

I came back to add to my previous review. One option that Invert-Colors provides is to invert-colors on the whole page -- "Except For Graphics." This is genius. For instance, you can turn eBay, which is as bright-white as any website, and turn all that white into black -- without changing the graphics of the items, if you select the option! Very groovy.

A month ago, a reviewer wrote:
> Does what it says, it inverts images witch I wish it didn't, it will also be disable when typing.

This reviewer needs to check out the options, which are located in the Add-Ons Manager. When you're on the Invert-Colors page, click on the Options tab at the top.

The reviewer also wrote
> it will also be disable when typing.
Say what? I started typing, which invokes the "Find" function in Firefox, and it did not disable Invert-Colors. Then I typed into eBay's search function, and that didn't disable Invert-Colors, either. Not on my Win7 lapotp.

https://github.com/Max-Github/FireFoxInvertColors/issues/27

> … 0.1.6 sometimes non-effective with Firefox ESR 52.9.0 and Waterfox 56.2.5

Issue verified fixed; outdated version 0.1.4 seems to be fine with Waterfox 56.2.6. Upgrading my review from three stars, to five. Thanks!

Your extension broke facebook page. Dialog message falls down of window viewport

This add-on is very easy to use, convenient and does what is claims. However, since many sites provide a dark theme, which the user very like does not want to colour invert, a white-list feature is urgently needed, in my opinion.