darkenergysurvey.org

https://darkenergysurvey.org· First analyzed 14 May 2026· Updated 14 May 2026

Export

Mobile

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Hosting Provider

Fermi National Accelerator Laboratory (Fermilab)

IP Address

131.225.105.97

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Aurora, United States

ASN

AS3152

Organization

Fermi National Accelerator Laboratory (Fermilab)

Server

Apache

Nameservers

ns1.fnal.gov.ns2.fnal.gov.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.9 s10%

Speed Index

2.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

33 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.9.4

Infrastructure

Hosting

Fermi National Accelerator Laboratory (Fermilab)

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Plugins

Ml Slider Ultimate Posts Widget Wonderplugin Gallery

CSS Frameworks

Libraries

Icon Libraries

Tag Managers

Web Servers

SEO Analysis

D55/100

Meta Tags4/15

Content6/12

Headings6/8

Technical19/25

E-E-A-T0/7

Images4/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

darkenergysurvey.orgdarkenergysurvey.org

Dark Energy Survey

No description available for this page.

Title Length18 chars

Recommended: 50-60 chars (~111px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100

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.

6/25

Schema Data

0/25

Citation

6/25

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

blockquotesnavheader/footer

Text ratio:2%

Words:186

Token eff.:Too Short

Sections/1K:32.3

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 3.5w

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.

72/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

15/20

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

1/15

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.

38/100

141 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

161 mg

Returning (cached)

81 mg

Annual (10K/mo)

16.9 kg

Emission Segments

Data Center

32 mg

Network

34 mg

Device

76 mg

Resource Breakdown

JavaScript

388.8 KB

Images

41.3 KB

CSS

661.3 KB

HTML

49.2 KB

Green Hosting Not Verified

Fermi National Accelerator Laboratory (Fermilab)

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

33d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

18.03.2026

Valid Until

16.06.2026

Subject Alternative Names (2)

darkenergysurvey.orgwww.darkenergysurvey.org

SHA-256 Fingerprint

B6:08:2C:B6:95:21:57:A5:C7:55:96:B6:B2:57:3D:2E:07:61:CE:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(private, max-age=0, must-revalidate)

connection

content-type

text/html; charset=UTF-8

date

Thu, 14 May 2026 04:11:29 GMT

link

<https://www.darkenergysurvey.org/wp-json/>; rel="https://ap...

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

darkenergysurvey.org

Domain Age

21y 8m

Created

13.09.2004

Expires

13.09.2030

Last Updated

07.09.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

71/100

Mobile Friendly5 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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue + Tahoma

WCAG Fail

62/100

Readability

/30

16/30

12px · LH 1.70

Hierarchy

/20

11/20

7.5x ratio

WCAG

/25

15/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans90px

Body Font

Tahoma

Sans12px

Contrast Ratio

1:1

13 issues

Reading Comfort

Dual Sans-Serif

left aligned

90px

50px

24px

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

❌ Low contrast: 13 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 7.5x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

10 unique colors

11:1 AAA Dark

#000000

Background· 44.4%

#c1baba

Other· 3%

#1c1821

Secondary· 7.4%

#da0109

Accent· 6.7%

#463440

Secondary· 6.3%

#352025

Secondary· 5.8%

#a5050b

Accent· 5.2%

#4f0107

Accent· 3.6%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

darkenergysurvey.org(6)googletagmanager.com(4)dap.digitalgov.gov(2)connect.facebook.net(1)

Website Identity

darkenergysurvey.org

21 years old

Location detected: 🇺🇸 United Statesvia ip

GoDaddy.com, LLCen-US

Social Profiles

Facebook

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Last analyzed: 14 May 2026 at 04:11

Historical Analysis & Change Tracking