hydrogen-central.com

https://hydrogen-central.com· First analyzed 14 May 2026· Updated 14 May 2026

Export

Mobile

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Hosting Provider

DigitalOcean

digitalocean.com

IP Address

138.197.119.15

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Clifton, United States

ASN

AS14061

Organization

Digital Ocean

Server

Nginx

CDN

Nameservers

ns2.bluehost.com.ns1.bluehost.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

685 ms10%

Speed Index

890 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

92 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Gridlovev2.1.2Custom

by meks

View Theme

Technology Stack

36 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Libraries

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

Fonts

Payments

Web Servers

Security

SEO Analysis

A83/100

Meta Tags15/15

Content10/12

Headings5/8

Technical24/25

E-E-A-T2/7

Images6/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

hydrogen-central.comhydrogen-central.com

Hydrogen Central - News & Market Intelligence to stay ahead

Hydrogen Central is your source of news and market intelligence on the Hydrogen industry. Discover market trends and stay ahead of the curve

Title Length59 chars

Recommended: 50-60 chars (~360px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (0)

7 issues found

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Crawlability

Sitemap

Type: index

36 URLs

36 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

4 13

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

D43/100

Bot Access

20/25

Machine Read.

0/25

Schema Data

8/25

Citation

15/25

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:9%

Words:9,534

Token eff.:Excessive

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary19w

Descriptive Headingsavg 9.2w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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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.

76/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 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.

52/100

308 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

352 mg

Returning (cached)

176 mg

Annual (10K/mo)

37.0 kg

Emission Segments

Data Center

15 mg

Network

91 mg

Device

203 mg

Resource Breakdown

JavaScript

534.8 KB

Images

2.1 MB

CSS

324.8 KB

Fonts

7.1 KB

HTML

28.8 KB

Other

351 B

Green Hosting Verified

DigitalOcean

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

45d

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

31.03.2026

Valid Until

29.06.2026

Subject Alternative Names (2)

hydrogen-central.comwww.hydrogen-central.com

SHA-256 Fingerprint

6E:3E:CC:20:84:AE:56:D8:B3:5B:22:AA:53:BB:9D:A2:4D:BD:99:F1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

14022

cache-control

🟡 0s(max-age=0, s-maxage=2592000)

cache-provider

CLOUDWAYS-CACHE-DE

content-encoding

📦 Gzip(gzip)

content-length

29241

Good Warning Issue

Email Infrastructure

Rackspace Email

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx1.emailsrvr.com

mx2.emailsrvr.com

Domain Information

hydrogen-central.com

Domain Age

5y 4m

Created

12.01.2021

Expires

12.01.2027

Last Updated

28.12.2025

Registrar

Bluehost Inc.

DNSSEC

Not Enabled

Privacy & Compliance

CookieYes

Cookie Consent Banner

CookieYes

GDPR Indicators

Cookie consent banner detected

CMP: CookieYes

Data Protection Officer mentioned

Legitimate interest basis 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.

75/100

Mobile Friendly12 breakpoints

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=1.0

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

59/100

Readability

/30

16/30

12px · LH 1.33

Hierarchy

/20

12/20

1.46x ratio

WCAG

/25

17/25

1:1 min contrast

Performance

/25

14/25

3 fonts · 5 req

Heading Font

Open Sans

Sans18px

Body Font

Open Sans

Sans12px

Contrast Ratio

1:1

37 issues

Reading Comfort

~41 CPL

Narrow lines

18px

40px

20px

12px

Augmented Fourth

Scale

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

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 37 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle FontsFluid Type (rem)

Color Palette

8 unique colors

21:1 AAA Dark

#000000

Background· 30.4%

#ffffff

Background· 20.2%

#18545e

Primary· 6.5%

#c2c7cd

Secondary· 2.9%

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

ComplianzSMB

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

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Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

hydrogen-central.com(17)pagead2.googlesyndication.com(2)googletagmanager.com(1)

Website Identity