Audit overview
Security and Accessibility 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
Top Priorities (5)
Content-Security-Policy header is missing
Without a CSP, a single XSS bug can exfiltrate everything your users type — including credentials.
HSTS header is missing
Without HSTS, a network attacker can downgrade the very first connection to HTTP and steal the user's session.
No Content-Security-Policy header found
Without a CSP, a single XSS bug can exfiltrate everything users type — credentials, payment data, session tokens.
6 button(s) with no accessible text
Buttons with no accessible text (icon-only, no aria-label) can't be activated by voice control or understood by screen readers.
6 image-only link(s) without alt text
Image-only links with no alt are unidentifiable to screen-reader users — link's destination is invisible.
Business case
What fixing the audit's findings is worth -- and what ignoring them keeps costing.
Return on investment
PLN 1,088 investment → PLN 8,954/month returns + EUR 120,500,000 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 ~34%.
- Page takes 16.6s to loadUsers abandon at ~3s — you're 14.1s over the 2.5s threshold→ Optimize render-blocking resources, preload the hero image, and compress images
- Page feels frozen for 6.0sClicks on the primary CTA are ignored while JavaScript runs→ Break up long tasks; defer non-critical JavaScript to post-hydration
- Severe layout shift during page loadUsers mis-click when content jumps — converting intent into frustration→ Reserve space for images, ads, and embeds with explicit width/height
- 9 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
- 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
€120.500.000
- No privacy policy link detectedRODO: EUR 10.000 – EUR 20.000.000
- Trackers detected but no cookie policy foundRODO: EUR 5.000 – EUR 10.000.000
- Trackers detected but no cookie policy foundRODO: EUR 10.000 – EUR 20.000.000
Bounce-Rate Cost
PLN 8 952 /mo
+34.4pp bounce · ~3,443 lost visitors/mo
CPC: PLN 2.60
Bandwidth Waste
PLN 2,44 /mo
7613.1 MB/mo × 0.320 PLN/GB
- Optimize transfer: save ~761 KB per page loadSaves PLN 2,44/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.
2.19 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
16.58 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
6.02 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.291
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.51 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.
22.38 s
Desktop
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.23 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.88 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.06 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.47 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.
5.98 s
Categories
8Performance
All checks pass
Security
Content-Security-Policy header is missing
Accessibility
6 button(s) with no accessible text
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.
Technology stack
Skolengo 1.40.0, on Apache/Java, hosted on Apache HTTP Server
Stack Architecture
Google Analytics 
Google Tag Manager 
Fourthwall 1.40.0
Skolengo 1.40.0
Consent Manager 
GSAP 
Gatsby 5.16.1Google Search Console 
MariaDB 
Onsen UI 
Open Graph 
Priority Hints 
React 
Sentry 
Webpack 
core-js 3.49.0
Java 
styled-components 6.1.23
Apache Apache HTTP Server 
Apache Tomcat All Detected Technologies (21)
Apache is a free and open-source cross-platform web server software.
Apache Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and WebSocket technologies.
Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible.
Styled components is a CSS-in-JS styling framework that uses tagged template literals in JavaScript.
Skolengo is an Education Management Software developed by Kosmos Education.
Fourthwall helps to create and launch a branded website.
Consent Manager is a provider ensuring GDPR and CCPA compliance for websites.
GSAP is an animation library that allows you to create animations with JavaScript.
Gatsby is a React-based open-source framework with performance, scalability and security built-in.
MariaDB is an open-source relational database management system compatible with MySQL.
Onsen UI is an open-source HTML5 hybrid app framework offering mobile UI components for PhoneGap and Cordova development.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
React is an open-source JavaScript library for building user interfaces or UI components.
Sentry is an open-source platform for workflow productivity, aggregating errors from across the stack in real time.
Webpack is an open-source JavaScript module bundler.
core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.
Google Analytics is a free web analytics service that tracks and reports website traffic.
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 (3)
Runtime exposed via X-Powered-By header
The X-Powered-By header reveals 'styled-components 6.1.23'. Remove this header in production to reduce information leakage.
No build tool detected
A framework (Consent Manager) 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
21 technologies identified. A complex stack increases maintenance burden and attack surface. Consider whether all components are actively needed.
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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 · 7h total → projected B (84)
Sprint 1: Quick Wins
+5Highest ROI — low effort, high impact
- · HSTS header is missing
- · 6 button(s) with no accessible text
- · 6 image-only link(s) without alt text
Sprint 2: Core Fixes
+4Medium effort, high structural impact
- · Content-Security-Policy header is missing
- · No Content-Security-Policy header found