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xsede.org

https://xsede.org· First analyzed 20 May 2026· Updated 20 May 2026
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xsede.org
Desktop screenshot of xsede.org
Mobile screenshot of xsede.org
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

18.220.149.166

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Dublin, United States

ASN

AS16509

Organization

AWS EC2 (us-east-2)

Server

Apache

Nameservers

dns2.ncsa.illinois.edu.dns1.ncsa.illinois.edu.charon.psc.edu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
417 ms10%
Speed Index
542 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
42 KB
3 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Twenty Twenty-Twov2.1
by the WordPress team
View Theme

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

D45/100
11
11
3
Meta Tags9/15
Content3/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images2/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
X
xsede.orgxsede.org

XSEDERedirect – Post Operations Redirect Page

No description available for this page.

Title Length45 chars

Recommended: 50-60 chars (~275px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (1/1) — critical for accessibility and SEO

14 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

F26/100
Bot Access
20/25
Machine Read.
1/25
Schema Data
0/25
Citation
5/25

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:1%
Words:70
Token eff.:Too Short
Sections/1K:10

Structured Data

No Schema

Citation Readiness

Opening Summary16w
Descriptive Headingsavg 7w
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

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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.
B
73/100
10
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
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
15/15
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
15/15
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.
1 recommendation
  • •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.
70/100
A+
4 mg
CO₂e / view
42.3 KB
Page Weight
95%
Cleaner Than
New Visitor
5 mg
vs
Returning (cached)
2 mg
Annual (10K/mo)
516 g
Emission Segments
Data Center
<0.001 g
Network
1 mg
Device
3 mg
Resource Breakdown
HTML
42.3 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

42d

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/1.1

Valid From

03.04.2026

Valid Until

02.07.2026

Subject Alternative Names (6)

mail.xsederedirect.web.illinois.eduportal.xsede.orgwww.xsede.orgwww.xsederedirect.web.illinois.eduxsede.orgxsederedirect.web.illinois.edu

SHA-256 Fingerprint

5F:C2:DD:CE:0D:74:B7:6D:C2:20:4A:02:0C:3D:64:5E:D6:6D:29:59...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection
Keep-Alive
content-type
text/html; charset=UTF-8
date
Wed, 20 May 2026 23:39:24 GMT
keep-alive
timeout=3, max=10
link
<https://xsederedirect.web.illinois.edu/wp-json/>; rel="http...
server
Apache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

25

SPF
DKIM
DMARC

Domain Information

xsede.org

Domain Age
16y 2m

Created

12.03.2010

Expires

12.03.2027

Last Updated

20.02.2024

Registrar

NameCheap, Inc.

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.
B
75/100
Mobile Friendly1 breakpoint
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Source Serif Pro + -apple-system

WCAG AAA
77/100
Readability
/30
23/30

18px · LH 1.60

Hierarchy
/20
7/20
WCAG
/25
25/25

21:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Source Serif Pro

Serif

Body Font

-apple-system

Sans18px

Contrast Ratio

21:1

WCAG AAA (≥7:1)

Reading Comfort

~34 CPL

Narrow lines
52px
h2
18px
p

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 21.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFontsFluid Type (rem)Flesch 37

Color Palette

9 unique colors
8.68:1 AAA Light
#ffffff
Background· 84.5%
#4c4b4c
Other· 1%
#99b2dc
Primary· 4.5%
#d4dae1
Secondary· 2.2%
#9da6b8
Secondary· 1.4%
#6fa0cf
Secondary· 1%

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

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Website Identity

xsede.org

16 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.en-US

Sponsored

Last analyzed: 20 May 2026 at 23:39

Historical Analysis & Change Tracking