I regularly receive comments about the poor quality of the PDF exports from Pix4Dcloud. That is because all it is doing is taking a screenshot, which greatly reduces the pixels and quality.
To get around this, I have to export the GeoTIFF, bring in to QGIS, then export to jpg and save that as a PDF, which still is not the most high quality.
Please add this as a feature, as all of the other drone software platforms have this capability.