mathjax in dark mode

[David Austin]

I have a colleague who is viewing Active Calculus in a chrome browser (recently updated to Version 140.0.7339.133) on a mac.  When dark mode is activated, MathJax expressions are rendered in light gray on a white background.  She has tried fiddling with her chrome preferences without any change.

Has anyone else seen this or know how to get around it?

Thanks,

David

[Charilaos Skiadas]

Here’s what mine looks like on a mac chrome version 140.0.7339.133 for this page https://activecalculus.org/single2e/sec-2-3-prod-quot.html

Charilaos Skiadas
Department of Mathematics
Hanover College

On Sep 11, 2025, at 10:55 AM, David Austin <david.a...@gmail.com> wrote:

I have a colleague who is viewing Active Calculus in a chrome browser (recently updated to Version 140.0.7339.133) on a mac.  When dark mode is activated, MathJax expressions are rendered in light gray on a white background.  She has tried fiddling with her chrome preferences without any change.

Has anyone else seen this or know how to get around it?

Thanks,

David

<Screenshot 2025-09-10 at 6.26.41 AM.png>

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[Oscar Levin]

I also don't see any issues, on mac or pc in chrome.  However, if I right click on math and explore the mathjax menu, math settings -> math renderer -> SVG, then I get the same bad display.  Switching to chtml fixes that.

I don't know if there is something we can do ahead of time to make this better.  And maybe it will automatically be fixed with mathjax4.

To view this discussion visit https://groups.google.com/d/msgid/pretext-support/BCDBE68C-4B45-4CF6-8338-045E7AC9E793%40gmail.com.

[Andrew Scholer]

Nice find Oscar.

The dark mode styling applies a background color to SVGs in dark mode, lest images like the one here:
https://activecalculus.org/single2e/sec-1-5-units.html#PA-1-5-2
Get rendered like this:
|

We can look at not applying that background to mathjax SVGs.

Andrew Scholer

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[David Austin]

Thanks for this report.  Changing to CHTML fixed the problem, and I have a happy colleague.

Also, the current behavior on non-MathJax SVGs (e.g. PreFigures) is good.

Thanks again,

David

To view this discussion visit https://groups.google.com/d/msgid/pretext-support/CACm44N8mJT64FZmNdLMMVEOxyqKn1jTAiRjK91p4eGiOXJecJQ%40mail.gmail.com.