Social sharing below download link?

If you want you can try to add it right to the download link in gde settings. If that doesn’t work you’ll have to add the code manually. I’m not adding any new features to GDE at this point (just tweaks for minimal usability and security) while another contributor looks toward taking over the product.

The file you would want to edit if you wanted to make a customization is the main plugin file, gviewer.php. Some familiarity with PHP would certainly be required.