A side-by-side comparison of two ssl certificate authorities, based on the 842,065 SSL Authority sites tracked by Site Stats Database.
Last updated
| Metric | Google Trust Services | Let's Encrypt |
|---|---|---|
| Websites | 228,244 | 466,882 |
| Market share | 27% | 55% |
| Share of top 10K sites | 26% | 30% |
| Share of top 100K sites | 28% | 44% |
|---|
| Rank | #2 | #1 |
|---|
| Median DR | 30 | 23 |
|---|
| Average DR | 33 | 27 |
|---|
| Median keywords | 1,076 | 849 |
|---|
| Median referring domains | 450 | 270 |
|---|
| Median domain age | 12 yrs | 12 yrs |
|---|
| Average domain age | 14 yrs | 14 yrs |
|---|
| Average monthly traffic | 128,871 | 108,181 |
|---|
| Combined monthly traffic | 29,414,009,983 | 50,507,691,242 |
|---|
A site runs one SSL certificate authority, so Google Trust Services and Let's Encrypt are mutually exclusive.
Monthly snapshots of each segment, 2026-06 to 2026-07. Website counts move when our catalog grows; the share of tracked sites is normalized, so it only moves when real prevalence changes.
Websites
Share of tracked sites
Combined monthly traffic
228,244 websites · rank #2
Top industries
Top markets
466,882 websites · rank #1
Top industries
Top markets
Let's Encrypt is used by more websites in our catalog: 228,244 use Google Trust Services and 466,882 use Let's Encrypt.
Google Trust Services sites have the higher median Ahrefs Domain Rating (Google Trust Services: 30, Let's Encrypt: 23).
Between 2026-06 and 2026-07, Google Trust Services went from 30% to 26% of all tracked sites, while Let's Encrypt went from 59% to 53%. Google Trust Services is gaining ground faster in our index.
No. A site runs a single SSL certificate authority, so Google Trust Services and Let's Encrypt are mutually exclusive.
Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.
Citation
Site Stats Database. "Google Trust Services vs Let's Encrypt." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/ssl-certificates/compare/google-trust-services-vs-let-s-encrypt
Site Stats Database tracks 228,244 websites using Google Trust Services and 466,882 using Let's Encrypt, each enriched with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. We detect every SSL certificate authority by crawling each site's HTML, response headers, and DNS; traffic and SEO metrics come from DataForSEO and Ahrefs. Everything refreshes at least monthly.
See plans & pricing| English |
| 99 |
| 14,321,906 |
| 28,301,335 |
| 28 yrs |
| 1,697,994,676 |
| Google Trust Services |
| fandom.com | English | 92 | 21,866,615 | 405,077 | 29 yrs | 1,021,137,487 | Google Trust Services |
| clevelandclinic.org | English | 92 | 5,266,698 | 262,751 | 28 yrs | 536,244,433 | Google Trust Services |
| cambridge.org | 92 | 4,651,462 | 357,733 | 28 yrs | 527,148,452 | Google Trust Services |
| quora.com | 91 | 36,342,947 | 360,723 | 26 yrs | 376,801,476 | Google Trust Services |
| mlb.com | English | 90 | 1,403,577 | 165,017 | 31 yrs | 376,727,145 | Google Trust Services |
| genius.com | English | 87 | 3,824,896 | 148,123 | 31 yrs | 274,953,050 | Google Trust Services |
| indeed.com | 92 | 6,459,977 | 289,179 | 28 yrs | 259,330,877 | Google Trust Services |
| dictionary.com | English | 90 | 3,387,790 | 129,246 | 31 yrs | 242,622,664 | Google Trust Services |
| English |
| 97 |
| 15,888,487 |
| 4,249,759 |
| 33 yrs |
| 354,173,918 |
| Let's Encrypt |
| nfl.com | English | 89 | 947,630 | 147,040 | 30 yrs | 275,712,888 | Let's Encrypt |
| nba.com | English | 90 | 758,560 | 186,338 | 31 yrs | 239,244,892 | Let's Encrypt |
| stock.adobe.com | 96 | 3,301,936 | 116,531 | 39 yrs | 225,699,793 | Let's Encrypt |
| weather.gov | English | 91 | 1,098,961 | 132,221 | 27 yrs | 221,232,646 | Let's Encrypt |
| expedia.com | 90 | 4,797,516 | 112,144 | 30 yrs | 208,730,561 | Let's Encrypt |
| target.com | English | 91 | 10,174,393 | 208,795 | 29 yrs | 204,573,119 | Let's Encrypt |
| vocabulary.com | English | 81 | 2,454,757 | 42,680 | 29 yrs | 192,093,469 | Let's Encrypt |
| allrecipes.com | 89 | 3,491,845 | 151,904 | 27 yrs | 166,334,891 | Let's Encrypt |