divingheritage.com

https://divingheritage.com· First analyzed 15 Jun 2026· Updated 15 Jun 2026

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divingheritage.com

Mobile

Sponsored

Hosting Provider

Hostinger

hostinger.com

IP Address

168.231.79.44

Site Location

🇬🇧 United Kingdomvia ip

Server Location

🇬🇧 Manchester, United Kingdom

ASN

AS47583

Server

Nginx

Nameservers

ns1.divingheritage.com.ns2.divingheritage.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

746 ms10%

Speed Index

970 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.4 MB

50 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hostinger

Technology Stack

3 Technologies Detected

Libraries

jQuery

Payments

PayPal

Web Servers

Nginx

SEO Analysis

D49/100

Meta Tags13/15

Content11/12

Headings0/8

Technical4/21

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

divingheritage.comdivingheritage.com

DivingHeritage - the worlds largest virtual diving helmet museum

DivingHeritage brings a tribute to all involved in the development of professional diving. The diving helmet museum has over 500 diving helmets and much more...

Description truncated.

Title Length64 chars

Recommended: 50-60 chars (~386px / 580px)

Description Length169 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (30/40) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Local SEO

Local Search Readiness

5/100

Poor

2 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

F32/100

Bot Access

20/25

Machine Read.

8/25

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:13%

Words:492

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary15w

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 (11)

AI readiness recommendation preview...

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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.

43/100

Passed

Critical

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

10/15

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...

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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.

37/100

350 mg

CO₂e / view

3.4 MB

Page Weight

15%

Cleaner Than

New Visitor

401 mg

Returning (cached)

200 mg

Annual (10K/mo)

42.0 kg

Emission Segments

Data Center

17 mg

Network

103 mg

Device

230 mg

Resource Breakdown

JavaScript

31.8 KB

Images

3.3 MB

CSS

24.9 KB

HTML

4.9 KB

Other

579 B

Green Hosting Verified

Hostinger

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

85d

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

11.06.2026

Valid Until

09.09.2026

Subject Alternative Names (2)

*.divingheritage.comdivingheritage.com

SHA-256 Fingerprint

22:5A:9B:85:A8:C7:8D:21:2E:76:F9:13:D0:B4:07:14:9A:D0:C5:FA...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html

date

Mon, 15 Jun 2026 16:08:02 GMT

etag

W/"595a2186-5af9"

last-modified

Mon, 03 Jul 2017 10:50:46 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mailgate.cyberweb.email

Domain Information

divingheritage.com

Domain Age

26y 1m

Created

15.05.2000

Expires

15.05.2030

Last Updated

16.03.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

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.

27/100

Not 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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

WCAG Partial

62/100

Readability

/30

24/30

16px · LH --

Hierarchy

/20

10/20

WCAG

/25

14/25

3.57:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

3.57:1

5 issues

Reading Comfort

~72 CPL

Optimal (45–75)

16px

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

✅ Optimal line length: ~72 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 3.6:1).

✅ 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 44

Color Palette

12 unique colors

13.75:1 AAA Light

#ffffff

Background· 46.60000000000001%

#2c2d31

Other· 6.1%

#877051

Primary· 5.4%

#745a49

Secondary· 4.8%

#d3c7c4

Secondary· 4.5%

#a37348

Secondary· 3.6%

#922a22

Accent· 1.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js(1)google.com(1)send-a-link.com(1)

Website Identity