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brainking.com

https://brainking.com· First analyzed 14 May 2026· Updated 14 May 2026
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brainking.com
Desktop screenshot of brainking.com
Mobile screenshot of brainking.com
Mobile

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Hosting Provider

Web4U s.r.o

IP Address

81.91.83.6

Site Location

🇨🇿 Czech Republicvia ip

Server Location

🇨🇿 Prague, Czechia

ASN

AS39790

Organization

Web4U s.r.o

Server

Nginx

Nameservers

ns1.dnsking.cz.ns2.dnsking.cz.ns6.dnsking.cz.ns5.dnsking.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
462 ms10%
Speed Index
601 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
152 KB
69 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Gumroad

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Facebook Pixel

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D47/100
13
7
4
Meta Tags9/15
Content12/12
Headings0/8
Technical8/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
B
brainking.combrainking.com

Play online chess, checkers, backgammon, reversi, pente and other p...

BrainKing - play online chess, checkers, backgammon, reversi, pente and other popular board games and variants on the internet.

Title truncated.
Title Length85 chars

Recommended: 50-60 chars (~515px / 580px)

Description Length127 chars

Recommended: 120-160 chars

Issues (4)

  • • Title is too long (85 chars, ~515px). Will be truncated in search results.
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (28/30) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

212 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F34/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
4/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:34%
Words:1,764
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
F
36/100
5
Passed
6
Critical
2
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
3/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
48/100
A+
19 mg
CO₂e / view
152.2 KB
Page Weight
95%
Cleaner Than
New Visitor
22 mg
vs
Returning (cached)
11 mg
Annual (10K/mo)
2.3 kg
Emission Segments
Data Center
4 mg
Network
5 mg
Device
10 mg
Resource Breakdown
JavaScript
5.1 KB
Images
29.7 KB
CSS
108.0 KB
HTML
9.4 KB
Green Hosting Not Verified
Web4U s.r.o
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

No WAF

32d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

18.03.2026

Valid Until

16.06.2026

Subject Alternative Names (2)

brainking.comwww.brainking.com

SHA-256 Fingerprint

C3:D2:6C:A8:18:08:E7:43:3A:26:18:DA:CC:0A:CA:0D:A6:66:1F:5C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
⚪ Custom(must-revalidate, post-check=0, pre-check=0)
content-encoding
📦 Gzip(gzip)
content-type
text/html;charset=utf-8
date
Thu, 14 May 2026 15:16:57 GMT
expires
Friday, 12-Jul-02 23:59:59 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

cust4.xnet.cz

Domain Information

brainking.com

Domain Age
23y 8m

Created

01.09.2002

Expires

01.09.2026

Last Updated

23.01.2026

Registrar

CSL Computer Service Langenbach GmbH d/b/a joker.com

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked
Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
F
29/100
Not Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

trebuchet ms

WCAG Partial
49/100
Readability
/30
13/30

12px · LH --

Hierarchy
/20
8/20
WCAG
/25
14/25

1.97:1 min contrast

Performance
/25
14/25

1 font

Heading Font

trebuchet ms

Body Font

trebuchet ms

Sans12px

Contrast Ratio

1.97:1

26 issues

Reading Comfort

Single Family

left aligned

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Hard to read: Flesch score 50/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 26 elements below WCAG AA threshold (min 2.0:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 50

Color Palette

11 unique colors
Light
#f5f1e5
Primary· 42.8%
#334247
Secondary· 9.6%
#b4b296
Secondary· 8.3%
#e9d1b0
Accent· 7.7%
#856c56
Secondary· 6.1%
#a04b24
Accent· 5.6%
#89987a
Secondary· 5.1%
#d4b795
Secondary· 4.5%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

3

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

9 Resources

5
Scripts
4
Styles
2
Async
1
Defer

Top Script Sources

local(3)ssl.google-analytics.com(1)connect.facebook.net(1)

Website Identity

brainking.com

23 years old
Location detected: 🇨🇿 Czech Republicvia ip
CSL Computer Service Langenbach GmbH d/b/a joker.com

Social Profiles

Facebook

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Last analyzed: 14 May 2026 at 15:17

Historical Analysis & Change Tracking