Trust = 75% safety & technical checks + 25% SEO score
Each check passes (full points) or fails (zero). A high Trust score needs the checks green and a good SEO score.
Trust factors & weights
| Factor |
Weight |
Passes when |
| Safe Browsing | 20 | Not flagged as malware / phishing |
| SSL Enabled | 15 | Site served over HTTPS |
| SSL Certificate | 15 | Certificate valid (not expired / mismatched) |
| HTML Standard | 10 | Valid HTML5 doctype |
| HTTP Test | 10 | Proper HTTPS response / no bad status |
| Canonical | 8 | Canonical tag present |
| Robots.txt | 7 | robots.txt exists & valid |
| XML Sitemap | 5 | Sitemap present |
| Mobile Responsive | 5 | Has a viewport meta tag |
| Indexable | 5 | Page not blocked from indexing |
To improve: fix the failing checks (heaviest first — Safe Browsing & SSL), then re-scan. CheckSEO recomputes the score on the next scan — it doesn’t change your site; the report’s suggestions tell you exactly what to fix.