hardcover.app
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
No <title> found.
No rel=canonical — risks duplicate-content dilution.
No JSON-LD — misses rich-result eligibility.
No sitemap.xml found or declared.
Thin (~159 words).
140 chars.
No noindex directive.
http:// redirects to https://.
Responsive viewport set.
Exactly one H1.
title, description & image set.
100% of images have alt text.
Present.
<html lang> set.
Strict-Transport-Security 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
Chrome UX Report
p75 · mobile · checked 6 days ago
Technology stack
fingerprinted
Detected technology stack
Registration
Namecheap 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 google.com — AUTH 74
- 03 substack.com — AUTH 74
- 04 mastodon.social — AUTH 70
- 05 dev.to — AUTH 69
Full referring-domain list & change alerts on paid plans · monitor hardcover.app free
Recent changes
re-renders daily
Wear the score like a credential.
One line of HTML in your footer. The badge re-renders live on every daily sync — no JavaScript, no upkeep. Every visitor who clicks it lands right here.
Other tracked profiles
comparable authority
Track hardcover.app and 10k+ more.
Daily authority alerts, backlink-change tracking, weekly digest. Free tier — no card.