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use-the-index-luke.com

https://use-the-index-luke.com· First analyzed 11 May 2026· Updated 11 May 2026
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use-the-index-luke.com
Desktop screenshot of use-the-index-luke.com
Mobile screenshot of use-the-index-luke.com
Mobile

Sponsored

Hosting Provider

Hetzner
hetzner.com

IP Address

144.76.71.176

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns1.easyname.eu.ns2.easyname.eu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
450 ms10%
Speed Index
585 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
96 KB
8 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hetzner

Technology Stack

1 Technologies Detected

Web Servers

1
Apache

SEO Analysis

B72/100
21
5
1
Meta Tags9/15
Content12/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
U
use-the-index-luke.comuse-the-index-luke.com

SQL Indexing and Tuning e-Book for developers: Use The Index, Luke ...

SQL indexing and tuning tutorial for developers. No unnecessary database details—just what developers need to know. Covers all major SQL databases.

Title truncated.
Title Length116 chars

Recommended: 50-60 chars (~703px / 580px)

Description Length147 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (116 chars, ~703px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

638 URLs

robots.txt

9 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100
Poor
3 13 2

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

Sponsored

AI & LLM Readiness

D43/100
Bot Access
17/25
Machine Read.
14/25
Schema Data
0/25
Citation
12/25

AI Bot Access

10/14 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
code blocksdef. lists
Text ratio:30%
Words:944
Token eff.:Optimal
Sections/1K:10.6
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w
Descriptive Headingsavg 3.4w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

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.
B
71/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
12/15
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.
2 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.
76/100
A+
10 mg
CO₂e / view
96.2 KB
Page Weight
95%
Cleaner Than
New Visitor
11 mg
vs
Returning (cached)
6 mg
Annual (10K/mo)
1.2 kg
Emission Segments
Data Center
<0.001 g
Network
3 mg
Device
6 mg
Resource Breakdown
JavaScript
1.2 KB
Images
60.1 KB
CSS
29.9 KB
HTML
5.0 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

82d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Gandi

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.07.2025

Valid Until

01.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

use-the-index-luke.comwww.use-the-index-luke.com

SHA-256 Fingerprint

2D:D8:5E:6B:93:57:F0:CB:45:A5:BD:3A:A7:63:C7:0B:63:06:D3:54...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 600s(max-age=600)
content-encoding
⚡ Brotli(br)
content-length
4775
content-type
text/html; charset=utf-8
date
Mon, 11 May 2026 00:57:47 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

fatalmind.com

Domain Information

use-the-index-luke.com

Domain Age
16y 2m

Created

05.03.2010

Expires

05.03.2027

Last Updated

05.03.2026

Registrar

EPAG Domainservices GmbH

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
D
57/100
Mobile Friendly
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.
Viewport
width=device-width, initial-scale=1
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Tahoma + Georgia

WCAG AAA
71/100
Readability
/30
23/30

16px · LH 1.45

Hierarchy
/20
11/20

1.3x ratio · ✓ H1→H6

WCAG
/25
23/25

8.72:1 min contrast

Performance
/25
14/25

2 fonts

Heading Font

Tahoma

Sans21px

Body Font

Georgia

Serif16px

Contrast Ratio

8.72:1

WCAG AAA (≥7:1)

Reading Comfort

~36 CPL

Narrow lines
21px
h1
24px
h2
16px
p
Major Second
Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.45 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.7:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 36

Color Palette

6 unique colors
Light
#fcfcfc
Background· 74.80000000000001%
#dde6ef
Primary· 6.5%
#9aa9b2
Secondary· 5.7%
#aec1d4
Secondary· 5.4%
#5984a0
Secondary· 4.3%
#d1cfc5
Secondary· 3.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

2 Resources

1
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

local(1)

Website Identity

use-the-index-luke.com

16 years old
Location detected: 🇩🇪 Germanyvia ip
EPAG Domainservices GmbHen

Sponsored

Last analyzed: 11 May 2026 at 00:57

Historical Analysis & Change Tracking