---
title: "Custom-Built Business Websites Go Without SSL Up to 16 Times as Often as WordPress Sites - Suff Digital"
url: https://www.suffdigital.com/resources/data-studies/ssl-certificates-by-industry
description: "We turn websites into predictable revenue engines. Web design and SEO that drives revenue, not clicks. Nashville-based, senior US team."
lang: en
---

Custom-Built Business Websites Go Without SSL Up to 16 Times as Often as WordPress Sites (https://www.suffdigital.com/resources/data-studies/ssl-certificates-by-industry)

Custom-built law firm websites have no SSL certificate 5% of the time, more than 16 times the 0.3% of law firm websites on WordPress, and across six industries not one website built on Wix is without a certificate. Plumbing websites are the most likely to go without, at 3.3%, nearly twice the 1.8% of restaurant websites.

No SSL certificate by industry

Plumbing

3.3%

Nonprofit

3.1%

Church

3%

Law firm

2.9%

All business websites

2.4%

Dental

2.1%

Restaurant

1.8%

Source: Suff Digital analysis of US plumbing, dental, law firm, restaurant, church and nonprofit websites, compared with 26,636 business websites · websites listed on US Google Business Profiles, September 2026

Custom-built or other platforms by industry

Nonprofit

6.1%

Plumbing

6%

Law firm

5%

Dental

4.3%

Church

3.8%

Restaurant

1.7%

Restaurant

51.7%

Church

44.2%

Plumbing

42.3%

Dental

35.2%

Law firm

34.8%

Nonprofit

26%

Certificate expires within 14 days by industry

Plumbing

1.3%

Church

0.7%

All business websites

0.9%

Law firm

1%

Nonprofit

0.3%

Dental

0.4%

Restaurant

0.4%

Let's Encrypt by industry

Church

68.8%

Nonprofit

63.2%

Law firm

62.6%

Plumbing

59.3%

Dental

54.4%

Restaurant

53.4%

Source: Custom-Built Business Websites Go Without SSL Up to 16 Times as Often as WordPress Sites - Suff Digital (https://www.suffdigital.com/resources/data-studies/ssl-certificates-by-industry)

## Structured data

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://www.suffdigital.com/#organization",
      "name": "Suff Digital",
      "alternateName": "Suff Digital Marketing",
      "url": "https://www.suffdigital.com/",
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        "@id": "https://www.suffdigital.com/#logo",
        "url": "https://www.suffdigital.com/logo.png",
        "contentUrl": "https://www.suffdigital.com/logo.png",
        "caption": "Suff Digital"
      },
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      },
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        "name": "Matt Suffoletto",
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      },
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          "telephone": "+1-629-236-0099",
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          "contactType": "sales",
          "areaServed": "US",
          "availableLanguage": [
            "en"
          ]
        }
      ],
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        "@type": "PostalAddress",
        "addressLocality": "Nashville",
        "addressRegion": "TN",
        "postalCode": "37219",
        "addressCountry": "US"
      },
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        "name": "United States"
      },
      "sameAs": [
        "https://www.linkedin.com/company/suff-digital/",
        "https://www.instagram.com/suffdigital/",
        "https://www.youtube.com/@suffdigitalmarketing",
        "https://www.tiktok.com/@suffdigital"
      ],
      "knowsAbout": [
        "Search Engine Optimization",
        "Pay-Per-Click Advertising",
        "Paid Social Advertising",
        "Conversion Rate Optimization",
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        "Digital PR",
        "Link Building",
        "Website Migration",
        "Website Maintenance and Support",
        "Technical SEO",
        "Local SEO",
        "AI Search Optimization"
      ],
      "hasOfferCatalog": {
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            }
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              "name": "Digital PR & Link Building",
              "url": "https://www.suffdigital.com/services/digital-pr"
            }
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            "itemOffered": {
              "@type": "Service",
              "name": "Website Migration",
              "url": "https://www.suffdigital.com/services/website-migration"
            }
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            "itemOffered": {
              "@type": "Service",
              "name": "Website Maintenance & Support",
              "url": "https://www.suffdigital.com/services/website-maintenance"
            }
          }
        ]
      }
    },
    {
      "@type": "WebSite",
      "@id": "https://www.suffdigital.com/#website",
      "url": "https://www.suffdigital.com/",
      "name": "Suff Digital",
      "inLanguage": "en-US",
      "publisher": {
        "@id": "https://www.suffdigital.com/#organization"
      }
    }
  ]
}
```