chesslair.com

Last checked 1h ago · 5 issues found

90Overall

80Speed

100SEO

79Security

100AI readiness

Speed 2 to fix

✕
Largest Contentful Paint
4.2 s
Fix: 🔒 Unlock with Pro
!
Mobile performance score
80/100 on Google PageSpeed (mobile)
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Reduce unused JavaScript
Potential saving about 0.7s
Fix: 🔒 Unlock with Pro
✓
Server response time
Homepage started responding in 25 ms.
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Cumulative Layout Shift
0
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Total Blocking Time
50 ms
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Desktop performance score
97/100 on Google PageSpeed (desktop)

✓
Homepage returns 200
HTTP 200
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Title tag
"ChessLair | Chess Opening Repertoire Trainer" (44 chars)
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Meta description
152 characters
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One H1 heading
1 H1 tag(s) found.
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Canonical URL
https://chesslair.com
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Page can be indexed
No noindex directive.
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Language declared
lang="en"
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Mobile viewport
Viewport meta tag present.
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Social share tags
og:title, og:description, og:image, og:url and og:type set.
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Image alt text
0 of 2 images have no alt attribute.
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Short redirect chain
http://chesslair.com/ takes 1 redirect(s): 308 → https://chesslair.com/
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Enough content on the page
557 words of visible text.
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Character encoding
Charset declared in the HTML.
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Favicon
Favicon found.
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X (Twitter) card tags
twitter:card = summary_large_image, image set
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robots.txt
Found at /robots.txt.
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XML sitemap
Found at https://chesslair.com/sitemap.xml
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No broken internal links
Checked 2 internal links from the homepage.
✓
Accessibility
92/100 on Google Lighthouse
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Best practices
100/100 on Google Lighthouse

✕
Content Security Policy
No content-security-policy header.
Fix: 🔒 Unlock with Pro
✕
Referrer-Policy
No referrer-policy header.
Fix: 🔒 Unlock with Pro
!
Permissions-Policy
No permissions-policy header.
Fix: 🔒 Unlock with Pro
✓
Served over HTTPS
The homepage loads over HTTPS.
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HTTP redirects to HTTPS
http:// returns 308 to HTTPS.
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HSTS header
strict-transport-security: max-age=63072000
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Clickjacking protection
X-Frame-Options: SAMEORIGIN
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X-Content-Type-Options
x-content-type-options: nosniff
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No mixed content
All resources load over HTTPS.
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Server software not exposed
No software versions in response headers.

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AI crawlers allowed in robots.txt
GPTBot, ClaudeBot, PerplexityBot and others are not blocked.
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AI crawlers not blocked by firewall
Homepage loads for GPTBot, OAI-SearchBot, ClaudeBot and PerplexityBot.
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Content readable without JavaScript
557 words in the raw HTML. Most AI crawlers don't run JavaScript.
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llms.txt file
Found at /llms.txt (4731 characters).
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Structured data (schema.org)
JSON-LD types: SoftwareApplication
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Clear page summary
AI answers often reuse your title and meta description to describe you.