I have an app that will need to have between about 10,000 and 20,000 of png’s with chemical structures that I want to include in a sqlite DB… I need them to look good…
They will primarily be used to embed the structures in PDF based reports, but I also want them to display on screen well on both Mac (10.10 and up) and Windows (7 & 10)…
And size does matter for this case … With this number of pngs doing multiple sizes for each one would be prohibitive!
In the PDF reports, the structures would be 2.5" square…
I have software (open source) that will draw the structure PNGs in any size in pixels I want. but I have no feel for image quality when scaling down in Xojo or the tradeoffs with quality vs initial size and space…
Given all that, what size PNG’s do you would work best in terms of quality?
BTW I can get the software that does the structure drawing to do it on the fly via the shell command line … but when I tested that it was too slow to use that way, so I will need to pre-draw them.
Thanks, for any feedback.
- karen