Audit overview
Security needs attention; the rest of the categories are in good shape.
Fix Priority Matrix
5 findingsQuick Wins
2High impact, low effort — start here.
Strategic
3High 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
Top Priorities (5)
Content-Security-Policy header is missing
Without a CSP, a single XSS bug can exfiltrate everything your users type — including credentials.
No Content-Security-Policy header found
Without a CSP, a single XSS bug can exfiltrate everything users type — credentials, payment data, session tokens.
Cross-Origin-Embedder-Policy header is missing
COEP enforces that all embedded resources opt-in to cross-origin embedding — required for cross-origin isolation features.
Cross-Origin-Opener-Policy header is missing
COOP isolates your top-level browsing context from cross-origin windows — without it, popup-based side-channel attacks remain possible.
External script from cmp.nature.com lacks integrity attribute
External resource without SRI — if the third-party CDN is compromised, your site executes attacker-controlled code.
Business case
What fixing the audit's findings is worth -- and what ignoring them keeps costing.
Return on investment
€659 investment → €10,120/month returns + EUR 500,000 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
9 barrier(s) likely increasing bounce by ~35%.
- Page takes 4.9s to loadUsers abandon at ~3s — you're 2.4s over the 2.5s threshold→ Optimize render-blocking resources, preload the hero image, and compress images
- Mixed content on HTTPS pageBrowsers block insecure subresources — broken images, missing scripts, warning badge→ Change http:// URLs inside the page to https:// (or protocol-relative)
- 3 broken link(s) on the pageClicks land on 404s — trust drops and the session often ends→ Fix or remove the broken destinations surfaced on the Content tab
- High main-thread blocking timePage is non-interactive for 593ms after first paint→ Defer third-party scripts and split large bundles
- No HSTS headerReturning visitors are briefly exposed to downgrade attacks on first request→ Set Strict-Transport-Security: max-age=31536000; includeSubDomains
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
€500.000
- 2 empty heading(s)EAA: EUR 1.000 – EUR 500.000
Bounce-Rate Cost
€7.687 /mo
+34.9pp bounce · ~3,494 lost visitors/mo
CPC: EUR 2.20
Bandwidth Waste
€0,33 /mo
4408.8 MB/mo × 0.074 EUR/GB
- Optimize transfer: save ~441 KB per page loadSaves €0,33/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 2 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.
2.18 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.94 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
593 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.190
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.18 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.
10.38 s
Desktop
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
657 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.21 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
4 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.058
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.01 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.
1.66 s
Categories
8Performance
All checks pass
Security
Content-Security-Policy header is missing
Accessibility
All checks pass
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 HSTS sites score 95+ on Infrastructure; you're at 75 — closing this gap is the highest-leverage improvement.
Top 10% of HTTP/3 sites score 97+ on Infrastructure; you're at 75 — closing this gap is the highest-leverage improvement.
Technology stack
HSTS, hosted on Google Cloud, with Fastly CDN
Stack Architecture
Google Tag Manager 
Zipkin 
HTTP/3 
Open Graph 
RSS 
Varnish 
Fastly 
Google Cloud All Detected Technologies (9)
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.
RSS is a family of web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format.
Varnish is a reverse caching proxy.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
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
9 technologies identified. A complex stack increases maintenance burden and attack surface. Consider whether all components are actively needed.
Show your score
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[](https://beavercheck.com/results/e3a7e0f2-977e-f8d8-78c6-7d83a96f1379)<a href="https://beavercheck.com/results/e3a7e0f2-977e-f8d8-78c6-7d83a96f1379"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.nature.com" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fwww.nature.comExport & 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 · 8h total → projected B (83)
Sprint 1: Quick Wins
+2Highest ROI — low effort, high impact
- · Cross-Origin-Opener-Policy header is missing
- · External script from cmp.nature.com lacks integrity attribute
Sprint 2: Core Fixes
+5Medium effort, high structural impact
- · Content-Security-Policy header is missing
- · No Content-Security-Policy header found
- · Cross-Origin-Embedder-Policy header is missing