---
title: "87.3% of Websites Using Bootstrap Run a Version That No Longer Gets Updates - Suff Digital"
url: https://www.suffdigital.com/resources/data-studies/outdated-bootstrap-websites
description: "We turn websites into predictable revenue engines. Web design and SEO that drives revenue, not clicks. Nashville-based, senior US team."
lang: en
---

87.3% of Websites Using Bootstrap Run a Version That No Longer Gets Updates (https://www.suffdigital.com/resources/data-studies/outdated-bootstrap-websites)

87.3% of websites that show their Bootstrap version run Bootstrap 4 or older, versions that no longer receive fixes. Bootstrap 3, unsupported since July 2019, is still the most common version, on 1,001,551 homepages.

Websites that show their Bootstrap version by bootstrap version

Bootstrap 5 (supported)

12.7%

Bootstrap 4 (unsupported since January 2023)

39.5%

Bootstrap 3 (unsupported since July 2019)

45.9%

Bootstrap 2 or older

1.9%

Source: Suff Digital analysis of 2,184,137 homepages with a readable Bootstrap version · the public HTTP Archive crawl of 15.5 million websites, September 2026

Websites running unsupported Bootstrap by website popularity

Top 10,000

86.8%

10k to 100k

84.5%

100k to 1 million

83.8%

1 million to 10 million

87.5%

Beyond the top 10 million

87.5%

All websites

87.3%

Source: 87.3% of Websites Using Bootstrap Run a Version That No Longer Gets Updates - Suff Digital (https://www.suffdigital.com/resources/data-studies/outdated-bootstrap-websites)

## 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/",
      "logo": {
        "@type": "ImageObject",
        "@id": "https://www.suffdigital.com/#logo",
        "url": "https://www.suffdigital.com/logo.png",
        "contentUrl": "https://www.suffdigital.com/logo.png",
        "caption": "Suff Digital"
      },
      "image": {
        "@id": "https://www.suffdigital.com/#logo"
      },
      "description": "Suff Digital is a full-stack digital marketing agency that turns websites into predictable revenue engines, SEO, paid media, content, CRO, and web design built around revenue, not vanity metrics.",
      "slogan": "Digital marketing built for what's next.",
      "email": "hello@suffdigital.com",
      "telephone": "+1-629-236-0099",
      "foundingDate": "2022",
      "founder": {
        "@type": "Person",
        "name": "Matt Suffoletto",
        "jobTitle": "Founder & CEO"
      },
      "contactPoint": [
        {
          "@type": "ContactPoint",
          "telephone": "+1-629-236-0099",
          "email": "hello@suffdigital.com",
          "contactType": "sales",
          "areaServed": "US",
          "availableLanguage": [
            "en"
          ]
        }
      ],
      "address": {
        "@type": "PostalAddress",
        "addressLocality": "Nashville",
        "addressRegion": "TN",
        "postalCode": "37219",
        "addressCountry": "US"
      },
      "areaServed": {
        "@type": "Country",
        "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",
        "Web Design",
        "Digital PR",
        "Link Building",
        "Website Migration",
        "Website Maintenance and Support",
        "Technical SEO",
        "Local SEO",
        "AI Search Optimization"
      ],
      "hasOfferCatalog": {
        "@type": "OfferCatalog",
        "name": "Suff Digital Services",
        "itemListElement": [
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Search Engine Optimization (SEO)",
              "url": "https://www.suffdigital.com/"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Pay-Per-Click (PPC) Advertising",
              "url": "https://www.suffdigital.com/services/ppc"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Paid Social Advertising",
              "url": "https://www.suffdigital.com/services/paid-social"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Conversion Rate Optimization (CRO)",
              "url": "https://www.suffdigital.com/services/cro"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Web Design",
              "url": "https://www.suffdigital.com/services/web-design"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Digital PR & Link Building",
              "url": "https://www.suffdigital.com/services/digital-pr"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Website Migration",
              "url": "https://www.suffdigital.com/services/website-migration"
            }
          },
          {
            "@type": "Offer",
            "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"
      }
    }
  ]
}
```