paulgraham.com
SEO LvL Authority Score — our own 0–100 metric from the open-web link graph, updated daily. Not Ahrefs DR or Moz DA; don't compare 1:1. The trend is the signal. Full methodology →
90-day authority trajectory
synced 18 hours ago
SEO health
5 pass · 4 warn · 6 fail
Missing.
No viewport meta — not mobile-friendly.
No H1 heading.
No Open Graph tags — poor social/AI previews.
Only 0% of images have alt text.
Very thin (~23 words).
No rel=canonical — risks duplicate-content dilution.
No JSON-LD — misses rich-result eligibility.
No lang attribute on <html>.
No HSTS header.
11 chars.
No noindex directive.
http:// redirects to https://.
Reachable / declared in robots.txt.
Present.
On-page & technical checks from a live homepage crawl, plus Google Lighthouse — re-run on every deploy and diffed against the last scan. This is the build-quality half of SEO; the Authority Score above is the off-page (link) half.
Field experience
Chrome UX Report
p75 · mobile · checked 3 days ago
Technology stack
fingerprinted
Detected technology stack
Registration
easyDNS Technologies I...
Registration & identity
Certificate
DigiCert Inc
SSL certificate
Homepage
5 days ago
Homepage snapshot
Third-party authority
independent estimate
Independent third-party estimates, refreshed weekly. SEO LvL's own Authority Score is the primary metric — these are for cross-reference.
Backlink intelligence
0 changes logged
Highest-authority sources
Preview · 5- 01 github.com — AUTH 85
- 02 bit.ly — AUTH 83
- 03 t.me — AUTH 79
- 04 stripe.com — AUTH 75
- 05 substack.com — AUTH 74
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Recent changes
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