On-Page SEO
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.