I am using prince-10r7 on the attached html file without a css and would expect the two columns of the table to be each 50% wide, as I have set

<colgroup span="1" style="width:50%"></colgroup>
<colgroup span="1" style="width:50%"></colgroup>

1. output.pdf‎ 53.7 kB ‎
   output
2. test.html‎ 2.5 kB ‎
   input

It will work with <col> elements, but not with <colgroup>.

Thank you for the feedback. I gave this to the producer of the word to xhtml converter that use and got the feedback: we have chosen to generate <colgroup span="NNN"/> sequences rather <col/> sequences because (X)HTML5 requires this and this is also compatible with the other versions of XHTML.

Right, we will investigate this.