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u3a.org.uk

https://u3a.org.uk· First analyzed 15 May 2026· Updated 15 May 2026
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u3a.org.uk
Desktop screenshot of u3a.org.uk
Mobile screenshot of u3a.org.uk
Mobile

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Hosting Provider

Public VPN

IP Address

77.75.122.252

Site Location

🇬🇧 Blackfrias, United Kingdomvia schema_nap

Server Location

🇬🇧 London, United Kingdom

ASN

AS42831

Organization

Public VPN

Server

Apache

Nameservers

ns1.affinity1.uk.ns2.affinity1.uk.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
957 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.7 MB
63 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Joomla!

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Libraries

2
jQuery
Animate.css

CSS Frameworks

2
Tailwind CSS
UIkit

Icon Libraries

1
Font Awesome

Email Marketing

1
Mailchimp

Web Servers

1
Apache

SEO Analysis

C69/100
20
9
1
Meta Tags9/15
Content11/12
Headings3/8
Technical19/25
E-E-A-T5/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness4/4
Mobile1/4
Indexability3/3
U
u3a.org.uku3a.org.uk

u3a - Welcome to u3a

u3a is a UK-wide movement of locally-run groups providing a wide range of opportunities to come together to learn for fun exploring new ideas skills & interests

Title Length20 chars

Recommended: 50-60 chars (~127px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

10 issues found

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Crawlability

Sitemap
robots.txt

18 rules

Local SEO

Local Search Readiness

30/100
Needs Work
8 13

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AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
3/25
Citation
14/25

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
nav
Text ratio:4%
Words:1,035
Token eff.:Optimal
Sections/1K:3.9
Depth:1/5

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary884w
Descriptive Headingsavg 4.2w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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.
C
69/100
12
Passed
3
Critical
2
Warnings
Images & Alt Text
15/20
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
5/15
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
8/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
34/100
D
220 mg
CO₂e / view
1.7 MB
Page Weight
60%
Cleaner Than
New Visitor
251 mg
vs
Returning (cached)
126 mg
Annual (10K/mo)
26.4 kg
Emission Segments
Data Center
49 mg
Network
53 mg
Device
118 mg
Resource Breakdown
JavaScript
278.3 KB
Images
1.3 MB
CSS
177.2 KB
HTML
23.9 KB
Other
2.9 KB
Green Hosting Not Verified
Public VPN
6 recommendations
  • •Carbon footprint recommendation preview...
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C

Security Score

64%Fair
Interactive

HTTPS

No WAF

63d

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

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (2)

*.u3a.org.uku3a.org.uk

SHA-256 Fingerprint

89:82:35:A7:C9:D2:E6:D8:D1:A9:8D:43:38:23:6B:65:50:92:C7:E7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
cross-origin-opener-policy
same-origin
date
Fri, 15 May 2026 21:48:01 GMT
expires
Wed, 17 Aug 2005 00:00:00 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

u3a-org-uk.mail.protection.outlook.com

Domain Information

u3a.org.uk

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
B
74/100
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...
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Typography & Readability

DM Sans

WCAG AA
59/100
Readability
/30
20/30

14px · LH 1.50

Hierarchy
/20
8/20
WCAG
/25
18/25

5.93:1 min contrast

Performance
/25
13/25

1 font · 4 req

Heading Font

DM Sans

Sans

Body Font

DM Sans

Sans14px

Contrast Ratio

5.93:1

WCAG AA (≥4.5:1)

Reading Comfort

~33 CPL

Narrow lines
36px
h2
28px
h3
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.9:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 59

Color Palette

10 unique colors
Light
#ffffff
Background· 17.8%
#4387d0
Primary· 40.3%
#9ac0e7
Accent· 13.1%
#587b99
Secondary· 10.4%
#9ead93
Secondary· 7.1%
#6498c3
Secondary· 5.9%
#5489b7
Secondary· 2.4%
#90b4d2
Secondary· 1.9%

Business & Marketing Stack

3 Tools Detected

Enterprise

Marketing Automation

1
MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

3

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

29 Resources

19
Scripts
10
Styles
3
Async
5
Defer

Top Script Sources

local(16)connect.facebook.net(2)googletagmanager.com(1)

Website Identity

The Third Age Trust

The Third Age Trust

Organization

u3a is a UK-wide movement of locally-run groups providing a wide range of opportunities to come together to learn for fun exploring new ideas skills & interests

info@u3a.org.uk
0208 466 6139
www.u3a.org.uk

156 Blackfriars Road, Blackfrias

SE1 8EN, Blackfrias, London

GB

Location detected: 🇬🇧 United Kingdom, Blackfriasvia schema_nap
📧 Microsoft 365en-gb

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Last analyzed: 15 May 2026 at 21:48

Historical Analysis & Change Tracking