What's the best programme to create game record images from positions in an SGF file, as PNG or other web-standard format?

I've been using Drago but it's "Export Position" feature spits out colour images that I find are a bit "busy" - I'd prefer black and white images like one gets in Go books - and the other Export feature spits out PDFs. Maybe there is a way to configure it to do more? (Many bonus points if "white" is actually transparent, outside of stones, so the image blends nicely into off-white backgrounds.)

The option to choose the move number at which to export (although, I guess, you could always truncate the SGF if you didn't want to export a final position.) and the option to choose how many prior moves are numbered would be necessary, too.

I always used cgoban3 from KGS, it covers all these options, but only through .PDF, as far as I know, so in the end you have a .JPEG to copy/paste and this is maybe not enought for your needs.
Galation

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Try the export feature in Drago rather than export position. You could the nice B/W images, with a lot of control over what part(s) of the game you want to export.