On-Page SEO — 27% (Free) / 22% (Pro)
Method: deduction-based.
Checks:
- title tag (presence/length)
- meta description (presence/length)
- H1 (presence, multiple-H1 detection)
- H2/H3 usage
- image alt text coverage
- word count / thin content
- internal link count
- schema.org presence
- Open Graph tags
- Twitter Card tags
- favicon
- lang attribute
- viewport meta
- lazy-loading on images.
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.