WordPress powers 62.8% of all websites utilizing a content management system, representing 43.1% of all operational websites worldwide. Even as SaaS website builders expand and headless API-first architectures gain traction among developer teams, open-source platforms continue to dominate the global web landscape. The figures below come from empirical research published by W3Techs, BuiltWith, the HTTP Archive Web Almanac, WordPress.org, Patchstack, and the Baymard Institute.
TL;DR
- WordPress powers 62.8% of the CMS market and 43.1% of all websites (W3Techs)
- Shopify is the second-largest CMS with a 6.2% market share (W3Techs)
- Wix holds a 3.8% CMS market share, followed by Squarespace at 3.1% (W3Techs)
- 31.4% of websites use custom code or no identifiable CMS (W3Techs)
- WooCommerce powers 38.2% of all e-commerce online stores (BuiltWith)
- Shopify accounts for 26.4% of e-commerce online stores (BuiltWith)
- Headless CMS adoption is expanding at 34% year-over-year (State of Jamstack)
- WordPress.org hosts over 60,000 free plugins in its official directory (WordPress.org)
- 92% of CMS security vulnerabilities originate in third-party plugins (Patchstack)
- Headless static sites achieve a 64% Core Web Vitals passing rate (HTTP Archive)
- WordPress sites achieve a 36.8% Core Web Vitals passing rate (HTTP Archive)
- 36% of active CMS websites run outdated or unsupported major versions (Sucuri)
- 48% of the top 10,000 high-traffic websites use custom-built CMS architectures (W3Techs)
1. Global CMS Market Share and Platform Rankings
The global content management system market remains heavily consolidated around open-source and major SaaS platforms. W3Techs census telemetry covering the top 10 million websites reveals that WordPress commands 62.8% of the known CMS market and powers 43.1% of all websites on the internet.
Shopify maintains the second-largest position globally with 6.2% CMS market share (4.4% of all websites). Proprietary SaaS website builders follow, led by Wix (3.8%) and Squarespace (3.1%), while legacy open-source platforms Joomla (2.4%) and Drupal (1.6%) continue their multi-year market share contraction.
| Metric | Value | Source |
|---|---|---|
| WordPress CMS market share (among known CMS sites) | 62.8% | W3Techs |
| WordPress global web share (all websites worldwide) | 43.1% | W3Techs |
| Shopify CMS market share | 6.2% | W3Techs |
| Wix CMS market share | 3.8% | W3Techs |
| Squarespace CMS market share | 3.1% | W3Techs |
| Joomla CMS market share | 2.4% | W3Techs |
| Drupal CMS market share | 1.6% | W3Techs |
Loading performance across platforms sits in our website performance statistics. Source: W3Techs Content Management Systems Report.
2. Custom Architectures vs. Off-the-Shelf CMS Deployments
Despite the ubiquity of commercial CMS tools, custom-coded web architectures retain a substantial presence. W3Techs reports that 31.4% of all websites operate without an identifiable CMS, relying instead on custom enterprise code, web application frameworks, or raw HTML/CSS.
Among the top 10,000 highest-traffic web properties, custom architectures account for 48.0% of deployments. In contrast, 54.4% of all websites rely on open-source self-hosted platforms, though 36% run outdated major software versions that have ceased receiving security patches.
| Metric | Value | Source |
|---|---|---|
| Websites using no identifiable CMS (custom code / static HTML) | 31.4% | W3Techs |
| Websites using proprietary / SaaS website builders | 14.2% | BuiltWith |
| Websites using open-source self-hosted CMS platforms | 54.4% | W3Techs |
| Average age of enterprise CMS installations in years | 4.8 yrs | HTTP Archive |
| Websites running outdated / unsupported major CMS versions | 36.0% | Sucuri / W3Techs |
| Share of top 10,000 websites utilizing custom-built CMS architectures | 48.0% | W3Techs |
Design accessibility across CMS themes links to our web accessibility statistics. Source: W3Techs CMS Overview.
3. E-Commerce CMS Market Share: WooCommerce, Shopify, and Magento
The digital commerce segment has established distinct competitive dynamics between self-hosted plugins and managed SaaS commerce engines. BuiltWith telemetry indicates that WooCommerce powers 38.2% of all e-commerce stores worldwide, while Shopify captures 26.4% of global online storefronts.
Enterprise-tier e-commerce remains divided between Magento / Adobe Commerce (6.8%) and headless commerce APIs. While self-hosted WooCommerce offers complete data sovereignty, SaaS storefronts deliver higher baseline checkout conversion rates (2.8% vs 2.1%) by optimizing mobile payment funnels.
| Metric | Value | Source |
|---|---|---|
| WooCommerce share of global e-commerce technologies | 38.2% | BuiltWith |
| Shopify share of global e-commerce technologies | 26.4% | BuiltWith / W3Techs |
| Magento (Adobe Commerce) e-commerce market share | 6.8% | W3Techs |
| BigCommerce e-commerce market share | 3.1% | BuiltWith |
| OpenCart e-commerce market share | 2.4% | W3Techs |
| PrestaShop e-commerce market share | 2.1% | W3Techs |
| Average checkout conversion rate on SaaS CMS vs open-source | 2.8% vs 2.1% | Baymard Institute |
Retail automation trends sit in our AI in retail statistics. Source: BuiltWith E-Commerce Technology Trends.
4. The Rise of Headless and Decoupled CMS Architectures
Modern frontend web development has fueled rapid acceleration in headless and API-first content architectures. HTTP Archive and State of Jamstack data indicate that headless CMS adoption is expanding at 34% year-over-year among enterprise developer teams.
Platforms such as Strapi (24% open-source headless share), Contentful (21%), and Sanity.io lead developer adoption. Decoupling backend content authoring from modern React/Vue frontends (Next.js, Nuxt) reduces Time to First Byte (TTFB) by 42%, dramatically improving user response times.
| Metric | Value | Source |
|---|---|---|
| Year-over-year adoption growth of headless / decoupled CMSs | +34.0% | State of Jamstack / HTTP Archive |
| Strapi market share among open-source headless CMSs | 24.0% | GitHub / npm telemetry |
| Contentful enterprise headless CMS adoption share | 21.0% | BuiltWith |
| Sanity.io developer adoption growth YoY | +42.0% | npm telemetry |
| Next.js / Nuxt.js frontend framework adoption with headless CMS | 58.0% | HTTP Archive |
| Average TTFB reduction achieved by switching to headless static site | 42.0% | HTTP Archive |
Biometric web login trends relate to our passkey adoption statistics. Source: State of Jamstack Developer Survey.
5. The Plugin Ecosystem and Cyber Vulnerability Landscape
The extensibility of modular CMS platforms creates both immense feature velocity and substantial security exposure. The official WordPress.org plugin directory hosts over 60,000 free plugins, with dominant extensions like Elementor (16M+ active installs) forming entire internal sub-economies.
However, third-party code represents the primary attack vector against web properties. Telemetry from Patchstack and Wordfence confirms that 92% of all documented CMS security vulnerabilities originate in third-party plugins and themes rather than core software code.
| Metric | Value | Source |
|---|---|---|
| Total free plugins available in WordPress.org directory | 60,000+ | WordPress.org |
| Total active installations of Elementor page builder | 16M+ | WordPress.org |
| Total active installations of Yoast SEO / Rank Math | 18M+ | WordPress.org |
| Average number of active plugins per WordPress site | 24 plugins | HTTP Archive |
| CMS security vulnerabilities originating in third-party plugins/themes | 92.0% | Patchstack / Wordfence |
| Average maintenance cost per year for self-hosted WordPress site | $680 | Derived from hosting and license data |
Identity and credential exposure links to our data breach statistics. Source: Patchstack State of WordPress Security.
6. Performance Benchmarks and Core Web Vitals Compliance
Page speed and user experience metrics vary significantly across different CMS platform architectures. The HTTP Archive Web Almanac reveals that custom headless static sites lead Core Web Vitals compliance with a 64.0% pass rate, compared to 36.8% for traditional WordPress sites.
Among hosted website builders, Wix achieved a 48.2% Core Web Vitals passing rate following extensive infrastructure optimization, outperforming Squarespace (44.6%) and Shopify (41.2%). Heavy JavaScript payload weights and excessive active plugins remain the leading performance bottlenecks for self-hosted sites.
| Metric | Value | Source |
|---|---|---|
| Wix mobile Core Web Vitals passing rate (Good LCP/INP/CLS) | 48.2% | HTTP Archive Web Almanac |
| Squarespace mobile Core Web Vitals passing rate | 44.6% | HTTP Archive |
| WordPress mobile Core Web Vitals passing rate | 36.8% | HTTP Archive Web Almanac |
| Shopify mobile Core Web Vitals passing rate | 41.2% | HTTP Archive |
| Custom headless static sites Core Web Vitals passing rate | 64.0% | HTTP Archive |
| Average page weight (MB) across WordPress websites | 2.84 MB | HTTP Archive |
Summary: CMS Market Share by the Numbers
| Metric | Value | Primary Source |
|---|---|---|
| WordPress CMS market share | 62.8% | W3Techs |
| WordPress global website share | 43.1% | W3Techs |
| Shopify CMS market share | 6.2% | W3Techs |
| Wix CMS market share | 3.8% | W3Techs |
| Squarespace CMS market share | 3.1% | W3Techs |
| Sites with no identifiable CMS | 31.4% | W3Techs |
| WooCommerce e-commerce market share | 38.2% | BuiltWith |
| Shopify e-commerce market share | 26.4% | BuiltWith |
| Headless CMS adoption YoY growth | +34.0% | HTTP Archive |
| WordPress.org free plugin directory count | 60,000+ | WordPress.org |
| CMS security vulnerabilities from plugins | 92.0% | Patchstack |
| Wix Core Web Vitals passing rate | 48.2% | HTTP Archive |
| WordPress Core Web Vitals passing rate | 36.8% | HTTP Archive |
| Headless static sites CWV passing rate | 64.0% | HTTP Archive |
| Average WordPress plugins installed | 24 plugins | HTTP Archive |
| Sites on unsupported major CMS versions | 36.0% | Sucuri / W3Techs |
| Top 10k sites using custom architectures | 48.0% | W3Techs |
Methodology and Sources
The statistics in this report were compiled from large-scale web technology crawler censuses, HTTP Archive telemetry datasets, official open-source repository logs, and cybersecurity threat reports.
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W3Techs: Content Management Systems Market Report (census of top 10M websites and CMS market distributions).
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BuiltWith: CMS and E-Commerce Technology Trends (global technology tracking and e-commerce checkout platform shares).
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HTTP Archive: Web Almanac CMS Chapter (performance telemetry, Core Web Vitals benchmarks, and asset weight).
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WordPress.org: WordPress Plugin & Theme Directory Statistics (official repository counts and active installation figures).
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Patchstack / Wordfence: State of WordPress Security Annual Report (plugin vulnerability metrics and exploit vector tracking).
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Baymard Institute: E-Commerce Checkout Usability Benchmarks (conversion rate comparisons across e-commerce architectures).
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State of Jamstack: Developer Ecosystem Survey (headless CMS growth rates and modern framework integration).
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Data watch: CMS market share metrics depend on whether percentages measure total websites or only websites with a detectable CMS. WordPress powers 43.1% of all websites on the internet, which translates to 62.8% of the known CMS market.
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Last updated: August 2026. This roundup is updated quarterly as new W3Techs web technology surveys and HTTP Archive data are released.