Hi,
This usually has to do with your HTML layout. The key difference between a HTML to PDF converter and a browser is, a browser window is usually much wider than a PDF page. A PDF page by default is only 8.5 inch wide, minus 1 inch margin on both side it is 6.5 inch, at 96 DPI it would be 624 pixel, which is a low narrower than a typical browser window. So try to reduce the width of your browser window and see if you see the same problem.
There are two ways to increase the pixel width of the PDF page without increasing its physical inch width. Both uses zoom level. One way is to add a fixed width element in your page. For example if you add the following code in your page:
<div style="width:1000px;height:1px"></div>
Then the converter will detect that your page has a mimimum width of 1000 pixels. It will then use this information to set a zoom level so that the page is zoomed out to fit this width. Alternatively, you can set HtmlToPdf.Options.ZoomLevel to a value less than 1. In both cases the text becomes smaller and the logical pixel width of the page increases.
If the page width is not the problem, try to verify your page with Google Chrome browser. Different browsers can render the same HTML differently. Our rendering is most close to Google Chrome.
If none of the above applies, please try to isolate the problem into a test page, then either provide the link to the test page, or post the content of the test page so that we can investigate further.
Thanks!