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coreos.com

https://coreos.com· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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coreos.com
Desktop screenshot of coreos.com
Mobile screenshot of coreos.com
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.126.5.188

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

Server

Apache

CDN

Akamai

WAF

Akamai

Nameservers

dns2.p01.nsone.net.dns3.p01.nsone.net.dns4.p01.nsone.net.dns1.p01.nsone.net.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
950 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.4 MB
189 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
Ghost
Infrastructure
Hosting
Amazon Web Services (AWS)
CDN
Akamai

Technology Stack

12 Technologies Detected

Analytics

3
Google Analytics
Facebook Pixel
Google Tag Manager

Customer Support

3
IntercomDriftZendesk

Advertising

2
Google AdsLinkedIn Ads

Frameworks

1
Angular

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Apache

SEO Analysis

C64/100
21
4
1
Meta Tags9/15
Content3/12
Headings7/8
Technical19/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
coreos.comcoreos.com

Red Hat OpenShift

A unified application development platform that lets you build, modernize, and deploy applications at scale on your choice of hybrid cloud infrastructure.

Title Length17 chars

Recommended: 50-60 chars (~106px / 580px)

Description Length154 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (3 words). Search engines need substantial content for ranking.

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

22 URLs

robots.txt

90 rules

Sitemap reference found

Local SEO

Local Search Readiness

12/100
Poor
4 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

F29/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
2/25

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:3%
Words:2,408
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

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
74/100
12
Passed
5
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
7/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
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.
50/100
E
347 mg
CO₂e / view
3.4 MB
Page Weight
15%
Cleaner Than
New Visitor
396 mg
vs
Returning (cached)
198 mg
Annual (10K/mo)
41.6 kg
Emission Segments
Data Center
17 mg
Network
102 mg
Device
228 mg
Resource Breakdown
JavaScript
921.2 KB
Images
2.2 MB
CSS
76.5 KB
Fonts
60.0 KB
HTML
79.9 KB
Other
3.5 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

WAF

165d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.03.2026

Valid Until

10.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.redhat.com

SHA-256 Fingerprint

CC:E4:7F:38:9F:84:8B:17:88:74:7A:3D:D9:4F:BB:87:3E:FB:A2:5F...

Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(max-age=0, no-cache, no-store)
content-encoding
📦 Gzip(gzip)
content-language
en
content-security-policy
script-src 'self' 'unsafe-inline' 'unsafe-eval' *.redhat.com...
content-type
text/html; charset=UTF-8
date
Tue, 28 Apr 2026 16:26:34 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx2.redhat.com
mx1.redhat.com

Domain Information

coreos.com

Domain Age
20y 8m

Created

13.08.2005

Expires

13.08.2026

Last Updated

14.07.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC
Not Enabled

Privacy & Compliance

TrustArc

Cookie Consent Banner
TrustArc
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: TrustArc
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.
C
65/100
Mobile Friendly2 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

RedHatDisplay + RedHatText

WCAG AA
77/100
Readability
/30
23/30

18px · LH 1.50

Hierarchy
/20
13/20

2.22x ratio

WCAG
/25
21/25

5.57:1 min contrast

Performance
/25
20/25

2 fonts · 3 req

Heading Font

RedHatDisplay

Sans40px

Body Font

RedHatText

Sans18px

Contrast Ratio

5.57:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines
40px
h1
36px
h2
24px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.6:1).

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

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

Buy on MyFontsFlesch 38

Color Palette

8 unique colors
21:1 AAA Dark
#000000
Background· 46.2%
#ffffff
Text· 8.7%
#28080c
Primary· 0.8%

Business & Marketing Stack

6 Tools Detected

Enterprise

Marketing Automation

1
MarketoEnterprise

Email marketing and automation platforms

Customer Support

1
DriftMid-Market

Live chat and helpdesk tools

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

2
Facebook PixelMid-Market
LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

1
TrustArcEnterprise

Cookie consent and privacy compliance tools

5

Categories

6

Total Tools

3

Enterprise

2

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Sponsored

Scripts & Styles

29 Resources

20
Scripts
9
Styles
15
Async
1
Defer

Top Script Sources

static.redhat.com(3)local(3)connect.facebook.net(2)cdn5.userzoom.com(2)redhat.com(2)

Website Identity

coreos.com

20 years old
Location detected: 🇩🇪 Germanyvia ip
Nom-iq Ltd. dba COM LAUDEen

Sponsored

Last analyzed: 28 Apr 2026 at 16:27

Historical Analysis & Change Tracking