User reports that OIDs printed with Internet Explorer and Chrome cannot be read by the TipToi pen

[sidiandi]

Test with other browsers than Firefox.

Drucken geht nur mit dem Firefox. Chrome und IE skalieren scheinbar die OID's. Durch Einstellungen konnte dies nicht kompensiert werden.

[cmorty]

I played around with Inkscape and I wasn't able to print any readable codes. I actually rewrote your printer test page to a SVG testpage. Opening the same SVG in FF and printing it worked just well. So I printed two pdfs and had a closer look. Inkscape just printed the dots, whereas FF does some magic that could be some print optimization:

BTW: IE and Edge just rasterize the SVG. Therefore it's unlikely to work at all.

[sidiandi]

Printing the OIDs seems only to be reliable with Firefox.

So, ttaudio will first try to use Firefox to display the OIDs, then the system's default browser as a fall back. The UI displays a warning message when Firefox is not installed.