Technical SEO — 22% (Free) / 18% (Pro)
Method: deduction-based.
Checks:
- HTTPS enabled, HTTP→HTTPS redirect
- robots.txt present/valid (and not blocking all crawlers)
- sitemap.xml discovery + size
- canonical tag presence and self-reference correctness
- redirect chain length
- broken external link sampling (up to 15 links)
- mixed content
- noindex detection.
The scoring method used:
1. Deduction-based (scoreCategory) — used for Technical SEO, On-Page, Security, Accessibility (fewer checks per category):
score = 100 − Σ(deduction for every failed check)
Deductions by severity: Critical −20, High −11, Medium −5, Low −2.
Floored at 0, capped at 100.