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Technologies > SSL Certificate Authorities > Top Site Usage

SSL certificate authorities ranked by usage on top websites

This diagram shows the share of top sites among all the sites for various SSL certificate authorities.

We calculate a top-site score from the usage of a technology by top sites compared to its usage by average sites. The score is derived from measurements at several traffic levels, but roughly speaking, score 2 means that usage of the technology is twice as common among top 1,000 sites than among top 10 million sites. Score -3 means that usage by top 10 million sites is three times as common as by top 1,000 sites. Only technologies used by 10 sites or more are included in this report. See technologies overview for further explanations on the methodologies used in the surveys.

How to read the diagram:
Usage of Izenpe among top 1,000 sites is 22.8 times as common as among top 10 million sites.

Izenpe
22.8
OpenTrust
15.3
Japanese GPKI
10.0
DigiCert
8.5
Certigna
7.7
W3Techs.com, 18 November 2017
Top-site scores for SSL certificate authorities

More details

You can find top site usage data for all 51 SSL certificate authorities in our SSL certificate authorities market report.

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Technology Brief
SSL Certificate Authorities
SSL certificate authorities are institutions that issue SSL certificates. We monitor authorities that are trusted by major browsers.


Latest related posting  read all
Web technology fact of the day
26 July 2017

IdenTrust, which is used as root certificate for Let's Encrypt, is now used by 28.6% of all websites, but only by 1.6% of the top 1000 sites.

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