When using the preview feature with dvips/ghostscript or dvipng, the resolution is very low. As a result, the preview is barely readable.
Why doesn't texstudio show the newly generated .ps file, which has good quality?
Workaround:
In Preview options, set zoom to 50%.
In Command, add "-r200" to Ghostscript command line (rungs.exe)
Affected version:
texstudio 2.12.6 on Windows
texstudio has no means to display a postscript file atm
It seems to become deprecated anyways, most people use only pdf (for preview)
Has TeXstudio means to display a PDF file, as it does for PNG ones?
yes, preview config / preview command / preview with pdflatex
I meant, is it possible for the tooltip to be displayed as a (mini) PDF (vector) file instead as a PNG image? In such a case, no trouble with low resolution.
No. Internally you have to convert the pdf page to a rasterized image which is then presented as a tooltip.
either use dvi->png method, you can set resolution in commands or use pdflatex (which tends to be more straigh forward).