defensivecss.dev
SEO LvL 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 20 hours ago
SEO health
10 pass · 4 warn · 1 fail
Only 0% of images have alt text.
No rel=canonical — risks duplicate-content dilution.
No JSON-LD — misses rich-result eligibility.
No HSTS header.
Thin (~191 words).
13 chars.
82 chars.
No noindex directive.
http:// redirects to https://.
Responsive viewport set.
Exactly one H1.
title, description & image set.
Reachable / declared in robots.txt.
Present.
<html lang> set.
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
below CrUX traffic floor
Technology stack
fingerprinted
Detected technology stack
Registration
Name.com, Inc.
Registration & identity
Certificate
Google Trust Services
SSL certificate
Homepage
1 week ago
Homepage snapshot
Backlink intelligence
0 changes logged
Highest-authority sources
Preview · 5- 01 github.com — AUTH 85
- 02 dev.to — AUTH 69
- 03 trainedmonkey.com — AUTH 66
- 04 zenn.dev — AUTH 63
- 05 simonwillison.net — AUTH 63
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Recent changes
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