<p dir="ltr">That would make sense. Some programs treat transparent pixels as opaque for the anti aliasing process, and most of the time transparent pixels are set to black as their color. </p> <div class="gmail_quote">On Aug 8, 2013 1:34 AM, "Laurent" <<a href="mailto:laurent.orseau@gmail.com">laurent.orseau@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div dir="ltr"><div>I don't have time to dig into this right now, but just for the record it may be a transparency problem of the pngs. Adding a colored background may solve the issue.<br></div>Changing the resolution of the images with `(latex-dpi 600)' (instead of 150) does not change anything.<br> <br>Laurent<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Aug 6, 2013 at 11:28 PM, Laurent <span dir="ltr"><<a href="mailto:laurent.orseau@gmail.com" target="_blank">laurent.orseau@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div>Hi,<br><br></div>When generating pdf with the very useful slideshow-latex, equations have a very poor quality.<br> </div>Has anyone found a solution to this by any chance?<br><br> </div>Test case (slidetex.rkt):<br>#lang slideshow<br><br>(require slideshow/latex)<br><br>(slide ($ "\\sum_{x\\in {\\cal X}} x^2"))<br><br></div>Then<br></div>slideshow --trust --pdf slidetex.rkt<span><font color="#888888"><br> <br></font></span></div><span><font color="#888888">Laurent<br> </font></span></div> </blockquote></div><br></div> <br>____________________<br> Racket Users list:<br> <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a><br> <br></blockquote></div>