This chart represents the percentage of requests to Google's servers that used encrypted connections. YouTube traffic is currently not included in this data.





We plan on adding additional Google products over time to increase the scope of this report.









Popular third-party sites





Our report also includes data about the HTTPS connections on many popular sites across the web , beyond Google. We've chosen these sites based on a combination of publicly-available Alexa data and our own Google internal data; we estimate they account for approximately 25% of all web traffic on the Internet.









Certificate Transparency





Websites use certificates to assert to users that they are legitimate, so browsers need to be able to check whether the certificate that you’re being presented is valid and appropriately issued. That is why this report also offers a Certificate Transparency log viewer , providing a web interface for users and site administrators to easily check and see who has issued a certificate for a website. For example, if you use this log viewer and search for google.com with ‘include expired' checked, you'll see the mis-issued google.com certificate from September 2015









Encryption for everyone





Implementing HTTPS can be difficult—we know from experience! Some common obstacles include:

Older hardware and/or software that doesn’t support modern encryption technologies.

Governments and organizations that may block or otherwise degrade HTTPS traffic.

Organizations that may not have the desire or technical resources to implement HTTPS.





Implementing encryption is not easy work. But, as more people spend more of their time on the web, it’s an increasingly essential element of online security. We hope this report will provide a snapshot of our own encryption efforts and will encourage everyone to make HTTPS the default on the web, even faster.