2026 Website Audit Statistics Report
We analyzed 1,000+ websites across 7 categories and 200+ technical checks. Here is what we found about the state of the web in 2026.
Published May 25, 2026 · Dataset available under CC-BY 4.0
Key Findings at a Glance
68.3
Average Overall Score
Out of 100
73%
Sites Fail Core Web Vitals
At least 1 metric fails
58%
Missing Schema Markup
No structured data at all
41%
Have Broken Links
Average 6.2 broken links each
Average Audit Scores by Platform
Website performance varies dramatically by underlying platform. Our analysis of 1,000+ audits reveals clear patterns in how different technology stacks perform across SEO, speed, and security.
| Platform | Overall | SEO | Speed | Security | Mobile | Sample Size |
|---|---|---|---|---|---|---|
| Next.js / React | 78.4 | 82.1 | 76.3 | 79.5 | 81.2 | 147 sites |
| Custom / Static | 74.2 | 71.8 | 81.4 | 75.1 | 76.9 | 118 sites |
| Shopify | 71.6 | 75.3 | 68.7 | 77.2 | 74.1 | 183 sites |
| WordPress | 62.1 | 68.4 | 54.3 | 64.8 | 61.9 | 421 sites |
| Wix / Squarespace | 58.9 | 62.1 | 52.7 | 71.3 | 59.8 | 81 sites |
| Other | 65.3 | 66.7 | 63.1 | 69.4 | 65.8 | 50 sites |
Research Insight
Next.js applications scored highest overall despite being newer technology, primarily due to built-in image optimization, automatic code splitting, and server-side rendering that improves Core Web Vitals. WordPress sites lagged significantly in speed (54.3/100) due to plugin bloat and unoptimized themes — yet they still represent 42% of the analyzed web, making them the single largest platform category.
Most Common SEO & Technical Issues (2026)
Across 1,000+ audits, certain problems appeared with alarming frequency. These are the issues silently killing rankings for the majority of website owners.
Missing meta descriptions
High67% of audited pages had missing or auto-generated meta descriptions. This directly reduces click-through rates from Google search results.
67% of audited sites affected
Unoptimized images
High62% of sites served images in PNG or JPEG format without WebP/AVIF conversion. Average image bloat: 1.8MB per page.
62% of audited sites affected
No schema markup
High58% of sites had zero structured data. These sites are ineligible for rich snippets, AI Overviews citations, and enhanced search results.
58% of audited sites affected
Slow server response (TTFB > 800ms)
Critical54% of sites had Time to First Byte exceeding 800ms. This is a confirmed Core Web Vitals ranking factor.
54% of audited sites affected
Missing alt text on images
Medium51% of images lacked alt text. This hurts accessibility, image SEO, and screen reader compatibility.
51% of audited sites affected
Broken internal links
Medium41% of sites had at least one 404 internal link. Average broken links per affected site: 6.2.
41% of audited sites affected
No HTTPS or weak TLS
Critical23% of sites still had mixed content warnings, outdated TLS versions, or missing security headers.
23% of audited sites affected
Missing H1 headings
Medium19% of pages had no H1 tag or multiple H1 tags. This confuses search engines about page topic.
19% of audited sites affected
Core Web Vitals Benchmarks (2026)
Google's Core Web Vitals are confirmed ranking factors. We measured LCP, INP, and CLS across all audited sites to establish real-world benchmarks by platform.
Largest Contentful Paint (LCP)
● Good: < 2.5s
● Needs Improvement: 2.5s - 4.0s
● Poor: > 4.0s
Interaction to Next Paint (INP)
● Good: < 200ms
● Needs Improvement: 200ms - 500ms
● Poor: > 500ms
Cumulative Layout Shift (CLS)
● Good: < 0.1
● Needs Improvement: 0.1 - 0.25
● Poor: > 0.25
Methodology & Data Sources
Sample: 1,042 publicly accessible websites audited between January 1, 2026 and May 20, 2026 using the DevelopersMatrix AI Website Audit Tool.
Audit Coverage: Each website was analyzed across 7 categories with 200+ individual checks: Technical SEO (28 checks), Performance (32 checks), Mobile UX (18 checks), Security (24 checks), Accessibility (22 checks), Content Quality (20 checks), and Conversion Optimization (28 checks).
Anonymization: All URLs, company names, and identifying metadata were stripped before aggregation. Only platform type, audit scores, and issue frequencies are included in the published dataset.
Platform Detection: Technology identification used HTTP response headers, HTML meta tags, JavaScript object presence, and CSS class patterns. WordPress was identified via wp-content paths or generator meta tags. Shopify via checkout URLs and script patterns. Next.js via __NEXT_DATA__ presence.
Core Web Vitals: LCP, INP, and CLS were measured via Lighthouse 12.0 simulation on mobile devices with 4x CPU throttling and 1.6Mbps network speed to simulate real-world conditions.
Limitations: This sample is self-selected (users chose to run audits) and may skew toward website owners already concerned about performance. E-commerce sites are overrepresented relative to their true web share. Results should be interpreted as directional benchmarks rather than absolute population statistics.
Key Terms Defined
- Core Web Vitals
- A set of three standardized metrics defined by Google to measure real-world user experience on websites. Includes Largest Contentful Paint (LCP) for loading performance, Interaction to Next Paint (INP) for interactivity, and Cumulative Layout Shift (CLS) for visual stability. Sites passing all three thresholds receive a ranking boost in Google Search.
- Largest Contentful Paint (LCP)
- Measures the time from when the page starts loading to when the largest visible content element (typically an image, video, or large text block) is fully rendered. Good: under 2.5 seconds. Needs improvement: 2.5-4.0 seconds. Poor: over 4.0 seconds.
- Interaction to Next Paint (INP)
- Replaces First Input Delay (FID) as the interactivity metric. Measures the latency of all interactions (clicks, taps, key presses) throughout the page lifecycle, reporting the worst 2% of interactions. Good: under 200 milliseconds. Needs improvement: 200-500ms. Poor: over 500ms.
- Cumulative Layout Shift (CLS)
- Quantifies how much visible content shifts unexpectedly during page loading. A score of 0 means no layout shifts; scores above 0.25 indicate significant visual instability that frustrates users and causes accidental clicks. The most common cause is images and ads loading without reserved dimensions.
- Lighthouse Score
- A weighted performance score from 0-100 generated by Google's Lighthouse auditing tool. Combines metrics for performance (25%), accessibility (25%), best practices (25%), and SEO (25%). Scores above 90 are considered excellent; 50-90 need improvement; below 50 indicates serious issues.
- Technical SEO
- The practice of optimizing website infrastructure for search engine crawling and indexing. Includes ensuring proper URL structure, XML sitemaps, robots.txt directives, canonical tags, hreflang for multilingual sites, structured data markup, and resolving crawl errors. Technical SEO enables search engines to discover, understand, and rank content effectively.
- robots.txt
- A text file placed at the root of a website that instructs web crawlers which pages or sections should not be indexed. While not a security mechanism, it is essential for preventing duplicate content issues, blocking staging environments from appearing in search results, and managing crawl budget for large sites.
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