This is a good addon it doesn't always work perfectly and the settings are a little confusing as to what I should tinker with to increase the contrast of text. Please add some clarification in lain language as to what setting does what. (I want to know what makes the text darker exactly, tks much.)

Doesn't work well for me. Color changes are tiny

PS. Automatic mode can't be disabled from Toolbar button. You have to disable it from Options

I really appreciate this add-on, for the reason you give... Some pages have grey text that can't even be read. Are they paying for the ink that they can't make the text black?

But I have two problems that take away one star:
1) I don't know what changed by now if I'm trying to write or answer a post on nextdoor.com , the text is invisible. If I highlight it with Ctrl-A, it's visible again but only until I do something. It took a while, but I found that if I right-click on the B in the add-on list and click "manual" it's visible, but only for a while.
Firefox 115.0.3 64-bit
Windows 10 22H2 fully updated as of 7/30/2023.
I might have had trouble on one other page, the alerts page from a Capital One credit card. I would check things and the check marks wouldn't show. A month ago. If you make a change to Blacken and you want me to test this, just write me at meirman@erols.com

2) I don't understand the add-on. What is the difference between Blacken and Manual? What does Manual do? When would I use Whiten? .... I don't know what whiten does and if manual does Blacken, then what does blacken do?

Just discovered this brilliant add-on!

Once you turn off "Process Links" in this add-on's Preferences, and set it to "Automatic", it is soooo slick. Increases the text contrast, automatically.

You have to turn off "Process Links", or some pages (ie Google's Results pages) will not show that you've visited a particular link.

This add-on is a good companion to Font Contrast. The latter cannot blacken text of unfolded lj comments, while this one can.

The best in the category. The only thing it needs is a timer to reapply, for things that load on demand like disqus.

Doesn't work with Firefox 71.0.
After the Blacken update to 2.3.6 and Firefox 72.0.1 it is working again - Many thanks

It worked really, really well up until yesterday, when it seems to have stopped working entirely.

Latest May 14 2019 version works fine but I had to manually install it from the list of versions. Thank you for developing this much needed add-on that is a triumph for common sense. I have contacted a number of sites that use the thin grey font but they ignore me. One was a major tourism destination charging over a thousand dollars for a nights stay and they wonder why their visitor numbers are not what they projected! Another was a literature blog site aimed mainly at seniors that, without the use of Blacken, has hundreds and hundreds of unreadable pages!

04 AOUT 2018 BONJOUR...DEFINITELY 5*! WHETHER YOUR EYES ARE OLD &TIRED OR JUST TIRED, ALL THOSE GRAY SQUIGGLIES TURN INTO REAL WORDS WITH THIS GREAT ADDON. COMBINED WITH "READ"
I CAN SEE!!! THANK YOU, NOW PLEASE USE YOUR GENIUS TO CREATE A GREAT TAB ADDON FOR THE SADLY MISSED TAB PLUS...
JESUS LOVES YOU...a
ALL CAPS? OLD EYES;(

https://photos.app.goo.gl/QNq1uc89sPwqxaiw9 difficulty with Blacken whilst using Video Trimmer https://paulkinlan.github.io/videocut/index.html – there followed another out-of-memory situation, crashing Waterfox.

https://photos.app.goo.gl/jsRMNY94HhJGQbYn6 I white-listed Video Trimmer, to be not blackened, but this did not prevent a difficulty – https://photos.app.goo.gl/7RqCC7tTorpCtpUSA – slowness at

Script: moz-extension://ea6e1759-875e-…5-8703-a8f7bab77647/blacken.js:1113

Please: how can I white-list a domain, not just a single URL?

Worked like a charm but now not at all anymore. Please fix. System: Firefox 61.0, Windows 10 64 German. Update: Works again, even with v61. Thanks for fixing! Now full stars ;)

Makes the internet readable again.

Quick and simple way to fix rendering issues on certain web pages like Dynamics CRM Notes. Takes white text and makes it black so it is readable.

Thank you so much for making the web readable again.

It just works. I have been struggling mightily with this godawful trend of gray/thin text on a gray/dark background or --heaven for forbid-- WHITE text on a DARK background!

This Extension works PERFECTLY with Firefox 58.0.2 (Quantum) and I couldn't be happier!

Thank you very much for sharing your work.
Very nice addon for defeating "some true morons in design" ... ;-)
Working well with Firefox v59.0 beta 10 ...