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Certified Website Score for

chesslair.com

Build a private chess opening repertoire, organize variations in groups and folders, quiz your prep, use Stockfish, and track weak lines with analytics.

First audit: May 21, 2026•Last audit: May 22, 2026
Visit website
83
Overall
100Website Quality
55Trust & Security
94PageSpeed
Score trend

Latest audit — May 22, 2026

Deep, transparent insight into how this score is built: PageSpeed vitals, on‑page quality signals, and trust & security checks — all broken down into clear, verifiable items you can act on.

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Site Quality

Title
20/20
ChessLair | Chess Opening Repertoire Trainer
44 chars (ideal 30–60)
Meta Description
15/15
Build a private chess opening repertoire, organize variations in groups and folders, quiz your prep, use Stockfish, and track weak lines with analytics.
152 chars (ideal 120–160)
Favicon
3/3
Favicon preview
https://chesslair.com/favicon.ico?favicon.0xy1jb4d~emtz.ico
present
Viewport meta
8/8
width=device-width, initial-scale=1
correct (width=device-width, initial-scale=1)
robots.txt
6/6
User-Agent: * Allow: / Sitemap: https://chesslair.com/sitemap.xml
perfect (User-agent + Allow + Sitemap)
Sitemap
7/7
https://chesslair.com/sitemap.xml
present
llms.txt
0/0
present
present
Headings
6/6
H1Stop forgetting your opening prep.
H2Most opening prep dies in scattered notes.
H2Everything for opening prep you can actually recall
H3Save lines fast
H3Organize groups and folders
H3Add comments move by move
H3Quiz the exact prep you built
H3Analyze with Stockfish
H3Track repertoire depth
H2See the shape of your repertoire.
H2From idea to muscle memory.
H3Create an opening
H3Build groups and folders
H3Drill the lines
H3Review analytics
H2Built for prep you can use when it matters.
H3Remember lines under pressure
H3Know what is underbuilt
H3Keep prep reviewable
H2Start free. Upgrade for bigger limits.
H2Your prep only matters if you can recall it.
correct structure
Schema.org JSON-LD
2/2
Software App: ChessLair
1 schema found
Canonical URL
8/8
https://chesslair.com
present
HTML lang
4/4
en
present
Character encoding
4/4
utf-8
present

Open Graph

Title
3/3
ChessLair | Chess Opening Repertoire Trainer
present
Description
3/3
Build a private chess opening repertoire, organize variations, quiz your prep, and track weak lines with analytics.
present
Image
3/3
Image preview
https://chesslair.com/og-image.png
present
URL
3/3
https://chesslair.com
present
Type
1/1
website
present

Twitter Cards

Card Type
1/1
summary_large_image
present
Title
1/1
ChessLair | Chess Opening Repertoire Trainer
present
Description
1/1
Build a private chess opening repertoire, organize variations, quiz your prep, and track weak lines with analytics.
present
Image
1/1
Image preview
https://chesslair.com/og-image.png
present

Security Headers

HTTPS
30/30
HTTPS enabled
HTTP Strict Transport Security
15/15
Strict-Transport-Security: max-age=63072000
Content Security Policy
0/15
missing (should be: Content-Security-Policy: default-src 'self')
Frame Protection
5/5
X-Frame-Options: SAMEORIGIN
MIME Type Protection
5/5
X-Content-Type-Options: nosniff

Domain Trust

Domain Rating
0/25
How to improve DR→
no domain rating found
Domain Age
0/5
0 years
Registrar
NAMECHEAP INC
Country
IS

Infrastructure

Provider
Vercel
69

Performance

100

SEO

100

Best Practices

92

Accessibility

Performance
69/100
Largest Contentful Paint
11/25
4.3s
2.5s4.0s
First Contentful Paint
6/10
2.8s
1.8s3.0s
Total Blocking Time
20/30
405ms
200ms400ms
Cumulative Layout Shift
25/25
0.00
0.100.25
Speed Index
7/10
4.4s
3.4s5.4s
SEO
100/100
Page isn’t blocked from indexing
31/31
Document has a `<title>` element
8/8
Document has a meta description
8/8
Page has successful HTTP status code
8/8
Links have descriptive text
8/8
Links are crawlable
8/8
robots.txt is valid
8/8
Image elements have `[alt]` attributes
8/8
Document has a valid `hreflang`
8/8
Document has a valid `rel=canonical`
8/8
Best Practices
100/100
Uses HTTPS
19/19
Avoids deprecated APIs
19/19
Avoids third-party cookies
19/19
Allows users to paste into input fields
12/12
Avoids requesting the geolocation permission on page load
4/4
Avoids requesting the notification permission on page load
4/4
Displays images with correct aspect ratio
4/4
Serves images with appropriate resolution
4/4
Page has the HTML doctype
4/4
Properly defines charset
4/4
No browser errors logged to the console
4/4
No issues in the `Issues` panel in Chrome Devtools
4/4
Accessibility
92/100
`[aria-*]` attributes match their roles
6/6
`[aria-hidden="true"]` is not present on the document `<body>`
6/6
`[role]`s have all required `[aria-*]` attributes
6/6
`[role]` values are valid
6/6
`[aria-*]` attributes have valid values
6/6
`[aria-*]` attributes are valid and not misspelled
6/6
Image elements have `[alt]` attributes
6/6
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
6/6
`button`, `link`, and `menuitem` elements have accessible names
4/4
ARIA attributes are used as specified for the element's role
4/4
`[aria-hidden="true"]` elements do not contain focusable descendents
4/4
Elements use only permitted ARIA attributes
4/4
Background and foreground colors do not have a sufficient contrast ratio.
0/4
Document has a `<title>` element
4/4
`<html>` element has a `[lang]` attribute
4/4
`<html>` element has a valid value for its `[lang]` attribute
4/4
Links have a discernible name
4/4
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
0/4
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
4/4
Touch targets have sufficient size and spacing.
4/4
Heading elements appear in a sequentially-descending order
2/2
Document has a main landmark.
2/2
Deprecated ARIA roles were not used
1/1
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