FreeSitemapGenerator is always looking for ways to improve our own and your rankings. Lately we have received multiple reports that state we should move our site to HTTPS. According to Google HTTPS will be used as a minor ranking signal. Google:
For now it's only a very lightweight signal affecting fewer than 1% of global queries, and carrying less weight than other signals such as high-quality content while we give webmasters time to switch to HTTPS. But over time, we may decide to strengthen it, because we.d like to encourage all website owners to switch from HTTP to HTTPS to keep everyone safe on the web.
from: googlewebmastercentral.blogspot.com/ 2014/08/https-as-ranking-signal.html
We are now gathering metrics of freesitemapgenerator.com and will move to HTTPS later this month. We will report back to you with updated metrics and see if it is worth to move to HTTPS. If you have moved a site to HTTPS and want to share the results with us and/or the entire FreeSitemapGenerator.com community get in touch!
FreeSitemapGenerator can create sitemaps for HTTPS websites since 2014.