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Usage Statistics and Market Share of SSL Certificate Authorities for Websites, May 2025

Technologies > SSL Certificate Authorities

Usage statistics and market shares of SSL certificate authorities for websites

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This diagram shows the percentages of websites using various SSL certificate authorities. See technologies overview for explanations on the methodologies used in the surveys. Our reports are updated daily.

How to read the diagram:
2.7% of the websites use none of the SSL certificate authorities that we monitor.
Let’s Encrypt is used by 59.8% of all the websites, that is a SSL certificate authority market share of 63.4%.

None 2.7% Invalid Domain 2.3% Certificate Expired 0.7% Unrecognized Authority 0.1% Self-signed less than 0.1% Let’s Encrypt 59.8% 63.4% GlobalSign 21.7% 23.0% Sectigo 5.7% 6.1% GoDaddy Group 3.9% 4.1% DigiCert Group 2.7% 2.9% Actalis 0.6% 0.6% Certum 0.6% 0.6% Secom Trust 0.3% 0.3% SSL.com 0.1% 0.1% W3Techs.com, 11 May 2025 absolute usage percentagemarket share Percentages of websites using various SSL certificate authorities
Note: a website may use more than one SSL certificate authority

The following SSL certificate authorities have a market share of less than 0.1%

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