StackOptic
Back to Search
aisi.gov.uk favicon

aisi.gov.uk

https://aisi.gov.uk· First analyzed 22 May 2026· Updated 22 May 2026
Export
aisi.gov.uk
Desktop screenshot of aisi.gov.uk
Mobile screenshot of aisi.gov.uk
Mobile

Sponsored

Hosting Provider

Webflow
webflow.com

IP Address

198.202.211.1

Site Location

🇬🇧 United Kingdomvia tld

Server Location

🇺🇸 San Francisco, United States

ASN

AS209242

Organization

Webflow, Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns3.virginmedia.net.ns4.virginmedia.net.ns1.virginmedia.net.ns2.virginmedia.net.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
974 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
334 KB
22 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Webflow
CDN
Cloudflare

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.5.1

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

Customer Support

1
Zendesk

SEO Analysis

C62/100
18
7
2
Meta Tags11/15
Content6/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
A
aisi.gov.ukaisi.gov.uk

The AI Security Institute (AISI)

The AI Security Institute is a directorate of the Department of Science, Innovation, and Technology that facilitates rigorous research to enable advanced AI ...

Description truncated.
Title Length32 chars

Recommended: 50-60 chars (~185px / 580px)

Description Length168 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (10/11) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

167 URLs

robots.txt

1 rules

Sitemap reference found

Allows all crawlers

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

D46/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
16/25

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:9%
Words:426
Token eff.:Optimal
Sections/1K:23.5
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary141w
Descriptive Headingsavg 7.9w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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
78/100
11
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
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
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
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.
55/100
A
41 mg
CO₂e / view
334.2 KB
Page Weight
90%
Cleaner Than
New Visitor
47 mg
vs
Returning (cached)
24 mg
Annual (10K/mo)
5.0 kg
Emission Segments
Data Center
9 mg
Network
10 mg
Device
22 mg
Resource Breakdown
JavaScript
324.8 KB
HTML
9.4 KB
Green Hosting Not Verified
Webflow
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

91%Excellent
Static / Informational

HTTPS

WAF

85d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

17.05.2026

Valid Until

15.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.aisi.gov.uk

SHA-256 Fingerprint

33:0E:47:5D:03:F5:2B:64:DD:57:BD:11:73:12:C7:AC:93:68:43:01...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
HIT
cf-ray🇦🇹 Vienna
9ffae726bd8a5b88-VIE
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self'
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

aisi.gov.uk

Domain Age
2 years

Created

26.04.2024

Expires

26.04.2027

Last Updated

26.04.2026

Registrar

Virgin Media Business Limited

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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
78/100
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

Typography & Readability

Onest

WCAG Partial
57/100
Readability
/30
19/30

16px · LH 1.70

Hierarchy
/20
7/20
WCAG
/25
13/25

1.47:1 min contrast

Performance
/25
18/25

1 font · 4 req

Heading Font

Onest

Sans

Body Font

Onest

Sans16px

Contrast Ratio

1.47:1

3 issues

Reading Comfort

~38 CPL

Narrow lines
83px
h2
23px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

❌ Very complex text: Flesch score 24/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.5:1).

❌ 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 24

Color Palette

5 unique colors
6.83:1 AA Light
#f9f9f9
Text· 11.3%
#56575e
Other· 4.6%
#171b26
Primary· 77.30000000000001%
#090d16
Secondary· 6.1%
#57101f
Accent· 0.7%

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

Sponsored

Scripts & Styles

9 Resources

8
Scripts
1
Styles
4
Async
0
Defer

Top Script Sources

cdn.prod.website-files.com(3)local(2)googletagmanager.com(2)d3e54v103j8qbb.cloudfront.net(1)

Website Identity

aisi.gov.uk

2 years old
Location detected: 🇬🇧 United Kingdomvia tld
Virgin Media Business Limiteden

Social Profiles

X (Twitter)LinkedIn

Sponsored

Last analyzed: 22 May 2026 at 09:48

Historical Analysis & Change Tracking