I am testing my small api library that generates lots of chemical files such as MOL and SDF. I was wondering if there is a software that can show me the pictures of chemical structures inside each file so that I don't have to open each of these separately. would prefer something free for Windows and Mac.
I found this tool named thumbfish (Windows only). It can display thumbnails for variety of formats and is free
You can also batch generate previews of MDL, SDF, etc. using Open Babel to export previews to SVG or PNG formats.
What about JMol ?
It opens .Mol and a slew of other formats in Java which is fairly widely compatible. Open-source too.
There is Free Maestro or Maestro Academics, but you have to read EULA before, maybe you are going to use it for commercial purposes. This is software for creation and opening of the databases, can read almost all formats. And also has 2d drawing tool and is cross-platform.