[libreoffice-users] Re: Problems with MathML export

Hello Neil,

Neil Soiffer schrieb am 15.08.2025 um 07:07:
> Regina,
>
> Deyan forwarded your letter to the W3C Math WG. His mail was prompted by 
> some problems I saw. I am using the latest release for Windows 10: 25.2.5.2.
>
> If you export to EPUB (via either Export or Export As...), there is no 
> math at all in the resulting document: no image file, no MathML, nothing.

I have created bug 168015 for the missing equations. If you have more 
information about MathML in EPUB, please add it to the bug report.
https://bugs.documentfoundation.org/show_bug.cgi?id=168015

> I find it confusing that there is a "Export" and "Export As..." and they 
> offer different choices. In fact, I didn't see that xhtml was an option 
> until reading your email. I am happy to find that MathML is exported 
> there. I think the general population would be unaware that xhtml is the 
> correct format to choose. Any reason you don't get rid of the "no longer 
> actively maintained" HTML option and have HTML use the XHTML path which 
> seems much better?
>
> For the PDF export, you should also be exporting MathML into the 
> document. The approach to use is to put the MathML into an "Associated 
> File" (it's an object in the PDF document, not something external). It 
> is attached to the /Formula tag. This is particularly important for 
> accessibility because AT can then pick up the MathML, speak it, braille 
> it, and allow users to navigate the math just as they would in HTML. I 
> can point you to documents that describe what to do and that have 
> examples of it if you would find that helpful. Given that you can 
> generate MathML from the editor, it should be relatively straightforward 
> to simply add this information when you output the /Formula tag.

I have contacted Michael Weghorn about accessibility of equations in 
PDF. He agrees that it is best to discuss problems on mailing list 
accessibility@global.libreoffice.org and report bugs and enhancement 
requests in our bugtracker https://bugs.documentfoundation.org/.

Kind regards,
Regina

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