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https://thetrainline.com Export & share
Scanned
2026-04-22 22:42 UTC
Worker
🇪🇸 Madrid
Duration
57.00s
Vs prev

Audit overview

4 categories need attention: Security, and 3 others.

Fix Priority Matrix

5 findings

Quick Wins

2

High impact, low effort — start here.

Strategic

3

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Screenshots

DESKTOP + MOBILE
Desktop
Desktop screenshot
Mobile
Mobile screenshot

Top Priorities (5)

Sorted by impact
Critical: 1

Content-Security-Policy header is missing

Without a CSP, a single XSS bug can exfiltrate everything your users type — including credentials.

Security › Security Headers
Critical: 2

No Content-Security-Policy header found

Without a CSP, a single XSS bug can exfiltrate everything users type — credentials, payment data, session tokens.

Security › Content Security Policy
Critical: 3

2 link(s) with no accessible text

Links with no accessible text (empty <a></a>, image-only no alt, icon-only no aria-label) are unidentifiable to screen readers.

Accessibility › Link & Button Quality
Warning: 4

61 third-party resources (100% of weight)

Informational: third-party resource count and their share of page weight. High share caps perf gains from frontend optimization.

Performance › Page Weight Inventory
Warning: 5

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.

Security › Security Headers
What fixing these means. Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 3.7s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Addressing the critical issues below would have the most immediate impact on your user trust.
3 security gaps detected — browsers may warn visitors about your site.
1 accessibility issue excludes users who rely on assistive technology.
Your LCP is 3.7s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

Business case

What fixing the audit's findings is worth -- and what ignoring them keeps costing.

Return on investment

$750 investment → $10,562/month returns + USD 157,500 risk avoided

Investment
$750
7.5 h · 4 findings
Monthly returns
$10,562
$126,743/yr
Payback
0.1 mo
+16799% Y1
Regulatory risk avoided USD 157,500
Or — fix only the top 3 findings
$6500.1 mo payback · +19399% Y1
Optimistic scenario assuming the top 3 capture most of the upside. Real-world recovery typically falls between this projection and the full-fix ROI above.
$50 — in quick wins — start here for the fastest payback

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

6 barrier(s) likely increasing bounce by ~23%.

Barriers
6
2 crit 4 warn
Bounce delta
+23pp
added vs baseline
Score
68
C
Speed
2
Trust
2
Usability
0
Content
1
Nav
1
  • Page feels frozen for 1.8s
    Clicks on the primary CTA are ignored while JavaScript runs
    → Break up long tasks; defer non-critical JavaScript to post-hydration
  • 5 broken link(s) on the page
    Clicks land on 404s — trust drops and the session often ends
    → Fix or remove the broken destinations surfaced on the Content tab
  • Page loads in 3.7s
    Every additional 100ms above 2.5s costs conversions — you're 1.2s over
    → Target <2.5s LCP: defer non-critical scripts and optimize the hero image
  • No HSTS header
    Returning visitors are briefly exposed to downgrade attacks on first request
    → Set Strict-Transport-Security: max-age=31536000; includeSubDomains
  • No Content-Security-Policy header
    Higher 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

$750 7.5 developer hours at $100/hr
Quick wins
$50 1 fixes in ~30 minutes

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.

$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

Warning:Cost of inaction

$8,211 / month at risk ~$98,534 / year if left unfixed
Default is 10,000. Use your own number for accurate $-figures.

Compliance Risk

$157,500

ADA Title IIICCPA/CPRA
  • 2 advertising/retargeting trackers detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • 1 empty heading(s)
    ADA Title III: USD 25,000 – USD 150,000

Bounce-Rate Cost

$8,211 /mo

+23.5pp bounce · ~2,346 lost visitors/mo

CPC: USD 3.50

Bandwidth Waste

$0.55 /mo

6820.5 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~682 KB per page load
    Saves $0.55/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.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 3 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

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

Lighthouse

Mobile

51
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.12 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.75 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.75 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.26 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.

17.22 s

Desktop

75
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.58 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.89 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

234 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.037

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.97 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.

4.37 s

Categories

8
Avg score 74.9

How you compare

Where this site stands against peers running the same stack.

Bootstrap · 885 peers
You 74
·
Avg 74
At average
0 50 100
Compliance P95Content P13Sustainability P21SEO P27Performance P29Security P71Accessibility P67Infrastructure P50

Top 10% of Bootstrap sites score 95+ on Content; you're at 67 — closing this gap is the highest-leverage improvement.

Better than 51% of Bootstrap sites See full Bootstrap benchmark →
Cloudflare · 2102 peers
You 74
·
Avg 74
At average
0 50 100
Compliance P96Content P5Sustainability P9Performance P27Infrastructure P30Accessibility P67SEO P49Security P51

Top 10% of Cloudflare sites score 96+ on Content; you're at 67 — closing this gap is the highest-leverage improvement.

Better than 42% of Cloudflare sites See full Cloudflare benchmark →

Technology stack

Bootstrap 5, hosted on AWS, with AWS CloudFront CDN

24 technologies detected 4 stack layers 2 with CPE identifier Enterprise

Stack Architecture

Analytics
Branch DoubleClick Floodlight Google Publisher Tag Google Tag Manager New Relic Statsig 3.30.0
Framework
Bootstrap 5 Cloudflare Facebook GetFeedback Google Search Console HSTS Loadable-Components Microsoft Microsoft 365 OneTrust React Swiper Trustpilot core-js 2.6.12
CDN
AWS CloudFront Amazon CloudFront
Hosting
AWS Amazon Web Services

All Detected Technologies (24)

Categories CDN Website https://aws.amazon.com/cloudfront Detected by BeaverCheck Evidence x-amz-cf-id: NvMXQSLrRuMHwFA6iOyPW2Outo0S_JjNYTBS4_nPfPcbWvxQ_hrGpg==

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.

Categories CDN Website https://aws.amazon.com/cloudfront/ Detected by BeaverCheck
Categories Hosting Website https://aws.amazon.com Detected by BeaverCheck · Medium Evidence Header: X-Amz-Cf-Id

Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality.

Categories PaaS Website https://aws.amazon.com/ Detected by BeaverCheck

Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.

Categories UI frameworks Website https://getbootstrap.com Detected by BeaverCheck Evidence Script URL: //widget.trustpilot.com/bootstrap/v5/tp.widget.bootstrap.min.js
This technology has a CPE identifier — check for known vulnerabilities Search NVD →
Categories DNS Detected by BeaverCheck Evidence NS record: chuck.ns.cloudflare.com
Categories Analytics Detected by BeaverCheck · Medium Evidence TXT record: facebook-domain-verification=yxu4e5x57ifadqon3zme5jdzaosiww

GetFeedback (formerly Usabilla) is a user feedback solution for collecting qualitative and quantitative user feedback across digital channels including websites, apps and emails.

Categories Issue trackers Website https://www.getfeedback.com Detected by BeaverCheck
Categories Analytics Detected by BeaverCheck · Medium Evidence TXT record: google-site-verification=LnNQArC8rgeQ8pACZQbOJr8RWSgv4hlUSrFPknxNaaY

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.

Categories Security Website https://www.rfc-editor.org/rfc/rfc6797#section-6.1 Detected by BeaverCheck

Loadable-Components is a library to solve the React code-splitting client-side and server-side.

Categories JavaScript libraries Website https://github.com/gregberge/loadable-components Detected by BeaverCheck
Categories Analytics Detected by BeaverCheck · Low Evidence TXT record: MS=ms71298604
Categories Email Detected by BeaverCheck Evidence MX record: thetrainline-com.mail.protection.outlook.com
Categories Analytics Detected by BeaverCheck Evidence Script URL contains cdn.cookielaw.org: https://cdn.cookielaw.org/scripttemplates/otSDKStub.js

React is an open-source JavaScript library for building user interfaces or UI components.

Categories JavaScript frameworks Website https://reactjs.org Detected by BeaverCheck
This technology has a CPE identifier — check for known vulnerabilities Search NVD →

Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.

Categories JavaScript libraries Website https://swiperjs.com Detected by BeaverCheck

Trustpilot is a Danish consumer review website which provide embed stand-alone applications in your website to show your most recent reviews, TrustScore, and star ratings.

Categories Reviews Website https://business.trustpilot.com Detected by BeaverCheck Evidence Script URL contains widget.trustpilot.com: //widget.trustpilot.com/bootstrap/v5/tp.widget.bootstrap.min.js

core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.

Categories JavaScript libraries Website https://github.com/zloirock/core-js Detected by BeaverCheck

Branch is a mobile deep linking system to increase engagement and retention.

Categories Marketing automation, Analytics Website https://branch.io Detected by BeaverCheck
Categories Advertising Website https://support.google.com/ds/answer/6029713?hl=en Detected by BeaverCheck

Google Publisher Tag (GPT) is an ad tagging library for Google Ad Manager which is used to dynamically build ad requests.

Categories Advertising Website https://developers.google.com/publisher-tag/guides/get-started Detected by BeaverCheck

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.

Categories Tag managers Website https://www.google.com/tagmanager Detected by BeaverCheck Evidence Script URL contains www.googletagmanager.com: https://www.googletagmanager.com/gtm.js?id=GTM-NJRBF7N

New Relic is a SaaS offering that focuses on performance and availability monitoring.

Categories RUM Website https://newrelic.com Detected by BeaverCheck

Statsig is a modern product experimentation platform that helps product teams continuously measure impact of every single feature they launch.

Categories Analytics, Feature management Website https://statsig.com/ Detected by BeaverCheck

Observations (2)

No build tool detected

A framework (Bootstrap) 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

24 technologies identified. A complex stack increases maintenance burden and attack surface. Consider whether all components are actively needed.

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BeaverCheck badge

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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 (81)

Sprint 1: Quick Wins

+2

Highest ROI — low effort, high impact

2 findings 0h → C (76)
  • · 2 link(s) with no accessible text
  • · 61 third-party resources (100% of weight)

Sprint 2: Core Fixes

+5

Medium effort, high structural impact

3 findings 7h → B (81)
  • · Content-Security-Policy header is missing
  • · No Content-Security-Policy header found
  • · Cross-Origin-Embedder-Policy header is missing

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