londonair.org.uk

https://londonair.org.uk· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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londonair.org.uk

Mobile

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Hosting Provider

Imperial College of Science, Technology and Medicine

IP Address

146.179.165.5

Site Location

🇬🇧 United Kingdomvia tld

Server Location

🇬🇧 Kensington, United Kingdom

ASN

AS786

Organization

Imperial College of Science, Technology and Medicine

Server

Microsoft IIS

Nameservers

ns2.ic.ac.uk.ns1.ic.ac.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

698 ms10%

Speed Index

907 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2 MB

70 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Imperial College of Science, Technology and Medicine

Technology Stack

11 Technologies Detected

CSS Frameworks

Analytics

Libraries

Other

Icon Libraries

Fonts

Web Servers

Frameworks

Customer Support

SEO Analysis

D55/100

Meta Tags5/15

Content10/12

Headings5/8

Technical15/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

londonair.org.uklondonair.org.uk

London Air Quality Network

Title Length26 chars

Recommended: 50-60 chars (~160px / 580px)

Description Length26 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (158/170) — critical for accessibility and SEO

12 issues found

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Crawlability

Sitemap

Type: standard

500 URLs

robots.txt

4 rules

Local SEO

Local Search Readiness

10/100

Poor

3 12 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

D43/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

13/25

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:2%

Words:697

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary20w

Descriptive Headingsavg 3.1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

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.

17/100

251 mg

CO₂e / view

2.0 MB

Page Weight

50%

Cleaner Than

New Visitor

287 mg

Returning (cached)

144 mg

Annual (10K/mo)

30.2 kg

Emission Segments

Data Center

56 mg

Network

60 mg

Device

135 mg

Resource Breakdown

JavaScript

1.3 MB

Images

235.6 KB

CSS

378.8 KB

Fonts

1.2 KB

HTML

104.5 KB

Other

23.3 KB

Green Hosting Not Verified

Imperial College of Science, Technology and Medicine

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

44d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

16.07.2025

Valid Until

16.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

londonair.org.ukwww.londonair.org.uk

SHA-256 Fingerprint

0C:09:90:2B:EB:4D:C6:DF:16:67:A3:AB:84:06:E3:29:2E:A8:E7:4E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

cache-control

🔴 No Cache(no-cache)

content-length

106736

content-type

text/html; charset=utf-8

date

Tue, 02 Jun 2026 07:36:12 GMT

expires

-1

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

londonair.org.uk

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

62/100

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, maximum-scale=1, user-scalable=0

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Source Sans Pro

WCAG Partial

64/100

Readability

/30

22/30

14px · LH 1.43

Hierarchy

/20

17/20

2.57x ratio · ✓ H1→H6

WCAG

/25

14/25

1.16:1 min contrast

Performance

/25

11/25

System fonts

Heading Font

Source Sans Pro

Sans36px

Body Font

Source Sans Pro

Sans14px

Contrast Ratio

1.16:1

17 issues

Reading Comfort

~45 CPL

Optimal (45–75)

36px

16px

24px

18px

14px

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 15/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.2:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

GGoogle FontsFluid Type (rem)Flesch 15

Color Palette

10 unique colors

11:1 AAA Light

#e4e3df

Text· 47.2%

#2b2b2d

Text· 7.5%

#46809b

Primary· 10.9%

#366883

Secondary· 7.7%

#3f679c

Secondary· 7.2%

#56576e

Secondary· 3.1%

#304350

Secondary· 1%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

HotjarMid-Market

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

maps.googleapis.com(7)local(7)platform.twitter.com(2)ssl.google-analytics.com(1)static.hotjar.com(1)

Website Identity

londonair.org.uk

Location detected: 🇬🇧 United Kingdomvia tld

Social Profiles

Facebook X (Twitter)YouTube

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Last analyzed: 02 Jun 2026 at 07:36

Historical Analysis & Change Tracking