Gary Illyes, a Webmaster Trends Analyst at Google, announced on Google+ this morning that over 80% of the eligible HTTPS URLs are not being displayed in Google’s search results as HTTPS URLs, instead they are showing up as HTTP URLs simply because of webmaster configuration.

Gary said they ran a small analysis at Google and found that of the HTTPS URLs eligible to be displayed in the Google search results, over 80% of them are not being displayed. Eligible HTTPS URLs include URLs that have no crawl issues, don’t contain the noindex and have no other problems. But because of how the webmaster configured the site, Google is being instructed to display the HTTP URL instead of the HTTPS URL.

Gary said the webmaster is using the HTTP variant in their sitemap files, in the rel-canonical and rel-alternate-hreflang elements instead of the HTTPS variant.

Google wants you to go HTTPS and even started months ago giving a small ranking benefit to HTTPS URLs. But still, many webmasters are not going HTTPS.

Gary from Google said:

If your site supports HTTPS, please do tell us: use HTTPS URLs everywhere so search engines can see them!