Global Performance
6/6 locations ✓Acceptable global latency — average 259ms across 6 locations, fastest from Amsterdam (134ms), slowest from Singapore (352ms). AWS CloudFront edge cache (Miss from cloudfront).
Audit overview
Compliance and Sustainability need attention; the other categories are in good shape.
Fix Priority Matrix
5 findingsQuick Wins
3High impact, low effort — start here.
Strategic
2High impact, requires investment.
Easy Improvements
0Small gains, minimal effort.
Nothing in this quadrant — good news.
Deprioritize
0Low impact, high effort — do last.
Nothing in this quadrant — good news.
Screenshots
Your mail setup has problems.
amazon.co.uk fails 2 mail checks: No DMARC record found, No SPF record found. This is the kind of misconfiguration that sends your mail to spam.
Top Priorities (5)
Cookie 'i18n-prefs' is missing the Secure flag
A cookie without the Secure flag can leak over HTTP — in HSTS-protected sites, this is still a defense-in-depth gap.
Cookie 'lc-acbuk' is missing the Secure flag
A cookie without the Secure flag can leak over HTTP — in HSTS-protected sites, this is still a defense-in-depth gap.
Page weighs 14.2 MB (10.6 MB transferred)
Informational: total page weight (uncompressed) and bytes actually transferred over the wire.
1 image(s) missing alt attribute
Each image without alt text is a WCAG 1.1.1 failure — invisible to screen-reader users, lost from Google Image Search.
12 control(s) without accessible label
Form controls without labels — assistive tech announces 'edit text' with no context; users can't complete forms.
Business case
What fixing the audit's findings is worth -- and what ignoring them keeps costing.
Return on investment
£225 investment → £5,429/month returns + GBP 18,050,000 risk avoided
Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.
Conversion barriers
7 barrier(s) likely increasing bounce by ~38%.
- Page takes 13.2s to loadUsers abandon at ~3s — you're 10.7s over the 2.5s threshold→ Optimize render-blocking resources, preload the hero image, and compress images
- Page feels frozen for 1.2sClicks on the primary CTA are ignored while JavaScript runs→ Break up long tasks; defer non-critical JavaScript to post-hydration
- 12 form field(s) without a labelScreen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes→ Associate every input with a visible <label for="…">; add autocomplete attributes
- No viewport meta tagMobile browsers render at desktop width and shrink — text unreadable, tap targets miniature→ Add <meta name="viewport" content="width=device-width, initial-scale=1">
- No Content-Security-Policy headerHigher XSS blast radius — one compromised script can exfiltrate the checkout form→ Ship a reporting-only CSP first, then enforce once violations are clean
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
Remediation cost
Start here for the best return on investment
Cost by category
Cost by effort level
Adjust assumptions
Team composition
Multiplier applied to dev hours to reflect QA, design, and PM overhead. Use Dev only for solo work; Full team for projects with formal review processes.
Rates reflect fully-loaded developer cost including overhead
Warning:Cost of inaction
Compliance Risk
£18,050,000
- 6 non-essential cookie(s) set without consent bannerUK GDPR: GBP 10,000 – GBP 17,500,000
- 6 non-essential cookie(s) set without consent bannerPECR: GBP 1,000 – GBP 500,000
- Skip navigation link is missing (WCAG 2.4.1)Equality Act 2010: GBP 500 – GBP 50,000
Bounce-Rate Cost
£3,955 /mo
+37.7pp bounce · ~3,767 lost visitors/mo
CPC: GBP 1.05
Bandwidth Waste
£2.10 /mo
33362.4 MB/mo × 0.063 GBP/GB
- Optimize transfer: save ~3.3 MB per page loadSaves £2.10/mo
Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 5 critical issues to capture this value
How this is calculated
Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.
Your site's LCP: → estimated after fixes.
These are estimates based on industry research — actual results vary
Your data stays in your browser — nothing is sent to our servers
Lighthouse
Mobile
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.50 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.21 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.17 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.095
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.17 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
14.89 s
Desktop
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
872 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.26 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
110 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.28 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
2.92 s
Categories
8Performance
Page weighs 14.2 MB (10.6 MB transferred)
Security
Cookie 'i18n-prefs' is missing the Secure flag
Accessibility
1 image(s) missing alt attribute
SEO
All checks pass
Infrastructure
All checks pass
Compliance
All checks pass
Content
All checks pass
Sustainability
All checks pass
How you compare
Where this site stands against peers running the same stack.
Top 10% of Cart Functionality sites score 86+ on Compliance; you're at 61 — closing this gap is the highest-leverage improvement.
Top 10% of core-js sites score 85+ on Compliance; you're at 61 — closing this gap is the highest-leverage improvement.
Technology stack
HSTS, hosted on AWS, with AWS CloudFront CDN
Stack Architecture
Cart Functionality 
HTTP/3 
Open Graph 
VideoJS 
core-js 3.17.3
jQuery 
AWS CloudFront Amazon CloudFront 
AWS Amazon Web Services All Detected Technologies (11)
Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds.
Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Video.js is a JavaScript and CSS library that makes it easier to work with and build on HTML5 video.
core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Observations (2)
No build tool detected
A framework (HSTS) was detected but no bundler was identified. The build tool may not be detectable from output patterns, or the site may use the framework's built-in bundler.
Complex technology stack detected
11 technologies identified. A complex stack increases maintenance burden and attack surface. Consider whether all components are actively needed.
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[](https://beavercheck.com/sites/amazon.co.uk)<a href="https://beavercheck.com/sites/amazon.co.uk"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.amazon.co.uk%2Fref%3Dnav_logo" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fwww.amazon.co.uk%2Fref%3Dnav_logoExport & share
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Fix Plan
Three-week roadmap to ship the audit's findings, with one-click copy targets for your tracker.
Three-week fix plan
2 sprints · 3h total → projected B (88)
Sprint 1: Quick Wins
+7Highest ROI — low effort, high impact
- · Page weighs 14.2 MB (10.6 MB transferred)
- · Cookie 'i18n-prefs' is missing the Secure flag
- · Cookie 'lc-acbuk' is missing the Secure flag
Sprint 2: Core Fixes
+3Medium effort, high structural impact
- · 12 control(s) without accessible label
- · 1 image(s) missing alt attribute