Head-to-head SEO performance comparison based on real data
Based on 3,796 pages across 10 websites
| Dimension | BigCommerce | Shopify |
|---|---|---|
|
Overall SEO Score
Average SEO score across all pages
|
62.2/100 | 64.5/100 |
|
Core Web Vitals (LCP)
Largest Contentful Paint — lower is faster
|
9.21s | 3.40s |
|
Core Web Vitals (CLS)
Cumulative Layout Shift — lower means less visual jank
|
0.07 | 0.00 |
|
Content Readability
AI-assessed readability score
|
70.5/100 | 75.8/100 |
|
Alt Text Compliance
Percentage of images with alt text
|
100.0% | 100.0% |
|
Structured Data Adoption
Percentage of pages with structured data
|
7.9% | 77.4% |
|
Title-Content Consistency
How well page titles match content
|
0.0/100 | 0.0/100 |
|
Internal Link Density
Average incoming internal links per page
|
25 | 94 |
|
Broken Link Rate
Average on-page errors per page — lower is better
|
N/A | N/A |
|
Page Speed
Average page load time — lower is faster
|
1.68s | 0.82s |
|
Average Content Length
Average word count across all pages
|
319 words | 703 words |
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