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Recent Trends
Performance degrading ↓
76
TTFB degrading ↓
645ms
FCP degrading ↓
2.4s
LCP degrading ↓
3.6s
Scanned
2026-10-10 14:54 UTC
Worker
🇧🇷 Sao Paulo
Duration
54.00s
Vs prev
Declined by -1

Global Performance

6/6 locations ✓

High global latency — average 527ms across 6 locations, fastest from Amsterdam (253ms), slowest from Santa Clara (690ms). Cloudflare edge cache (DYNAMIC). Cache-Control disables caching (no-store). 4 locations above the 500ms target.

Brazil - Sao Paulo
Full audit
645ms
DNS 13ms · TLS 9ms
Spain - Madrid
284ms
DNS 37ms · TLS 26ms
Netherlands - Amsterdam
253ms
DNS 21ms · TLS 12ms
United Stated - New York
619ms
DNS 20ms · TLS 11ms
United States - Santa Clara
690ms
DNS 45ms · TLS 11ms
Singapore - Singapore
669ms
DNS 11ms · TLS 8ms
CDN: Cloudflare (DYNAMIC) · Avg TTFB: 527ms · Cache: no-store

Audit overview

All categories sit comfortably above the 70 threshold; this is a clean audit.

Fix Priority Matrix

5 findings

Quick Wins

4

High impact, low effort — start here.

Strategic

1

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
Warning: 1

1 render-blocking <script src> tag(s) without async/defer

Performance issues directly impact user engagement and conversion rates.

Performance › JavaScript Blocking
Warning: 2

External script from googleads.g.doubleclick.net lacks integrity attribute

External resource without SRI — if the third-party CDN is compromised, your site executes attacker-controlled code.

Security › Subresource Integrity
Warning: 3

External script from www.googletagmanager.com lacks integrity attribute

External resource without SRI — if the third-party CDN is compromised, your site executes attacker-controlled code.

Security › Subresource Integrity
Warning: 4

Unattributable: 296ms CPU time

Informational: CPU time spent on this resource. Total >1s is a perf budget violation.

Performance › JS Execution Cost
Warning: 5

https://costdown.org/: 1113ms CPU time

Informational: CPU time spent on this resource. Total >1s is a perf budget violation.

Performance › JS Execution Cost
What fixing these means. Your site is in great shape. The remaining improvements are refinements rather than critical fixes. Your LCP of 3.6s exceeds Google's 2.5s 'Good' threshold and the 3 performance issues below directly contribute to it. Addressing the critical issues below would have the most immediate impact on your conversion rate.
Your LCP is 3.6s — fixing the 3 performance criticals could bring it under Google's 2.5s 'Good' threshold.
2 security gaps detected — browsers may warn visitors about your site.

Business case

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

Return on investment

€255 investment → €4,477/month returns + EUR 20,500,000 risk avoided

Investment
€255
3.0 h · 3 findings
Monthly returns
€4.477
€53.728/yr
Payback
0.1 mo
+20970% Y1
Regulatory risk avoided EUR 20.500.000
Or — fix only the top 3 findings
€255 → 0.1 mo payback · +20970% 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.
€85 — 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

2 barrier(s) likely increasing bounce by ~10%.

Barriers
2
2 warn
Bounce delta
+10pp
added vs baseline
Score
94
A
Speed
2
Trust
0
Usability
0
Content
0
Nav
0
  • Page loads in 3.6s
    Every additional 100ms above 2.5s costs conversions — you're 1.1s over
    → Target <2.5s LCP: defer non-critical scripts and optimize the hero image
  • High main-thread blocking time
    Page is non-interactive for 424ms after first paint
    → Defer third-party scripts and split large bundles

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Remediation cost

€255 3.0 developer hours at €85/hr
Quick wins
€85 2 fixes in ~60 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

€3.372 / month at risk ~€40.468 / year if left unfixed
Default is 10,000. Use your own number for accurate $-figures.

Compliance Risk

€20.500.000

GDPREAA
  • 2 advertising/retargeting trackers detected
    GDPR: EUR 10.000 – EUR 20.000.000
  • 3 heading(s) are over 120 characters -- likely a misformatted paragraph
    EAA: EUR 1.000 – EUR 500.000

Bounce-Rate Cost

€3.372 /mo

+10.4pp bounce · ~1,041 lost visitors/mo

CPC: EUR 3.24

Bandwidth Waste

€0,15 /mo

1961.4 MB/mo × 0.074 EUR/GB

  • Optimize transfer: save ~196 KB per page load
    Saves €0,15/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
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

76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

2.43 s

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

3.59 s

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

424 ms

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.

2.88 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.

7.81 s

Desktop

97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

757 ms

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

1.25 s

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

10 ms

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.

757 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.90 s

Categories

8
Avg score 93.1

How you compare

Where this site stands against peers running the same stack.

Google Search Console · 4391 peers
You 93
·
Avg 75
+18 above average
0 50 100
Accessibility P97Security P96Sustainability P94SEO P93Performance P91Content P84Compliance P79Infrastructure P73
Better than 96% of Google Search Console sites See full Google Search Console benchmark →
HSTS · 3294 peers
You 93
·
Avg 78
+15 above average
0 50 100
Accessibility P95Security P93SEO P93Sustainability P92Performance P83Content P81Compliance P78Infrastructure P71
Better than 94% of HSTS sites See full HSTS benchmark →

Technology stack

Google Search Console, hosted on Next.js, with Cloudflare CDN

18 technologies detected 4 stack layers 3 with CPE identifier Enterprise

Stack Architecture

Analytics
DoubleClick Floodlight Google Ads Google Ads Conversion Tracking Google Analytics Google Tag Manager
Framework
Google Search Console HSTS HTTP/3 Lucide Open Graph Priority Hints RSS React Tailwind CSS Webpack
CDN
Cloudflare
Hosting
Next.js 15.5.24 Next.js App Router

All Detected Technologies (18)

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Categories CDN Website https://www.cloudflare.com Detected by BeaverCheck Evidence Server header in redirect: cloudflare
This technology has a CPE identifier — check for known vulnerabilities Search NVD →

Next.js is a React framework for developing single page Javascript applications.

Categories JavaScript frameworks, Web frameworks, Web servers, Static site generator Website https://nextjs.org Detected by BeaverCheck Evidence Script URL: https://costdown.org/_next/static/chunks/4bd1b696-f785427dddbba9fb.js
This technology has a CPE identifier — check for known vulnerabilities Search NVD →

The Next.js App Router is a new paradigm for building applications using React's latest features.

Categories JavaScript frameworks, Web servers Website https://nextjs.org/docs/app Detected by BeaverCheck
Categories Analytics Detected by BeaverCheck · Medium Evidence TXT record: google-site-verification=d67404KMCF8M2SjKmO1Bk28XoyGLJiGdtN-jM-4WPHs

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

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.

Categories Miscellaneous Website https://httpwg.org/ Detected by BeaverCheck

Lucide is an open-source icon library that provides 1000+ vector (svg) files for displaying icons and symbols in digital and non-digital projects.

Categories Font scripts Website https://lucide.dev Detected by BeaverCheck

Open Graph is a protocol that is used to integrate any web page into the social graph.

Categories Miscellaneous Website https://ogp.me Detected by BeaverCheck

Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.

Categories Performance Website https://wicg.github.io/priority-hints/ Detected by BeaverCheck

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.

Categories Miscellaneous Website https://www.rssboard.org/rss-specification Detected by BeaverCheck

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 →
Categories Framework Website https://tailwindcss.com Detected by BeaverCheck Evidence Found 90 unique Tailwind utility classes in HTML

Webpack is an open-source JavaScript module bundler.

Categories Miscellaneous Website https://webpack.js.org/ Detected by BeaverCheck
Categories Advertising Website https://support.google.com/ds/answer/6029713?hl=en Detected by BeaverCheck

Google Ads is an online advertising platform developed by Google.

Categories Advertising Website https://ads.google.com Detected by BeaverCheck

Google Ads Conversion Tracking is a free tool that shows you what happens after a customer interacts with your ads.

Categories Analytics Website https://support.google.com/google-ads/answer/1722022 Detected by BeaverCheck

Google Analytics is a free web analytics service that tracks and reports website traffic.

Categories Analytics Website https://google.com/analytics 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/gtag/js?id=AW-18482447436

Observations (2)

No build tool detected

A framework (Google Search Console) 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

18 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 · 3h total → projected A (96)

Sprint 1: Quick Wins

+3

Highest ROI — low effort, high impact

4 findings 1h → A (96)
  • · Unattributable: 296ms CPU time
  • · https://costdown.org/: 1113ms CPU time
  • · External script from googleads.g.doubleclick.net lacks integrity attribute
  • · External script from www.googletagmanager.com lacks integrity attribute

Sprint 2: Core Fixes

Medium effort, high structural impact

1 findings 2h → A (96)
  • · 1 render-blocking <script src> tag(s) without async/defer

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