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https://redbullshop.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
5
REVIEW
2
PASS
5
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

2.11 s

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

3.45 s

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

615 ms

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

0.011

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

3.08 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.

5.21 s

Page Load Progression

770 ms
1.5 s
2.3 s
3.1 s
3.8 s
4.6 s
5.4 s
6.2 s
Checks
14
5 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
5.5 MB transferred, 93 requests
FIX
5.5 MB transferred, 93 requests
Critical::
Page weighs 6.3 MB (5.5 MB transferred)
Warning::
JavaScript is 1.8 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.8 MB
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Info::
93 HTTP requests
Info::
Estimated 1.2 g CO2 per page load
5.5 MB / 2.4 MB budget
5.5 MB transferred
93 requests
1.2 g CO2 per page load
HTML 1.8 MiB 32%
JavaScript 1.8 MiB 32%
Images 1.7 MiB 31%
Fonts 176.1 KiB 3%
Other 106.1 KiB 2%
Other 3.5 KiB 0%
Other 620 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (5.5 MiB of 5.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3098ms total JS execution
FIX
3098ms total JS execution
Warning::
https://www.redbullshop.com/public/bundle.e168194f...: 1140ms CPU time
Warning::
https://www.redbullshop.com/TSPD/08d1a3d40aab20002...: 798ms CPU time
Warning::
https://www.redbullshop.com/en-int/: 529ms CPU time
Warning::
Unattributable: 283ms CPU time
Info::
https://www.redbullshop.com/public/3952.a2bfa63563...: 241ms CPU time
Warning::
Third-party scripts: 3098ms (100% of total)

Main Thread Breakdown

Script Evaluation 59% Other 19% Rendering 9% Style & Layout 7% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.redbullshop.com/public/bundle.e168194fb911608b.js1140ms946ms1ms3rd
https://www.redbullshop.com/TSPD/08d1a3d40aab20002c3e3610a546101c122525d66f11815c456a2803f8c3fa9c3869e7507ef29ed2?type=8798ms752ms15ms3rd
https://www.redbullshop.com/en-int/529ms13ms18ms3rd
Unattributable283ms5ms0ms3rd
https://www.redbullshop.com/public/3952.a2bfa635637a285f.async.js241ms27ms0ms3rd
https://rm.redbullshop.com/gtm.js?id=GTM-5XHDS9107ms88ms9ms3rd
F
JS Bundles
Action
29 scripts, 864 KB unused
FIX
29 scripts, 864 KB unused
Warning::
https://www.redbullshop.com/public/bundle.e168194f...: 468 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.redbullshop.com/public/5624.61cfb86653...: 99 KB unused (85%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://rm.redbullshop.com/gtm.js?id=GTM-WJGX9BZ: 67 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.redbullshop.com/public/8044.bcf190acca...: 67 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://rm.redbullshop.com/gtm.js?id=GTM-5XHDS9: 63 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 864 KB
864 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.redbullshop.com/public/bundle.e168194fb911608b.js900 KB468 KB (52%)✓3rd
https://www.redbullshop.com/public/5624.61cfb86653de6e12.async.js117 KB99 KB (85%)✓3rd
https://rm.redbullshop.com/gtm.js?id=GTM-WJGX9BZ122 KB67 KB (55%)✓3rd
https://www.redbullshop.com/public/8044.bcf190accabc38b3.async.js87 KB67 KB (78%)✓3rd
https://rm.redbullshop.com/gtm.js?id=GTM-5XHDS9122 KB63 KB (52%)✓3rd
https://www.redbullshop.com/public/3952.a2bfa635637a285f.async.js92 KB36 KB (40%)✓3rd
https://cdp-api.redbullshop.com/js/exponea.min.js52 KB33 KB (64%)✓3rd
https://www.redbullshop.com/public/4772.26bf143d22b08a15.async.js39 KB30 KB (78%)✓3rd
https://www.redbullshop.com/public/3700.e091294ec36c71c7.async.js11 KB—✓3rd
https://www.redbullshop.com/public/3513.5c4b31ac7f405511.async.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
51 images, 0 KB saveable
REVIEW
51 images, 0 KB saveable
Warning::
https://assets.redbullshop.com/q_auto/t_subshop-se... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.redbullshop.com/q_auto/t_subshop-se... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
51 images 1.7 MB
0 oversized -0 KB
19 legacy format
2 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
4 fonts (176 KB)
PASS
4 fonts (176 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

176 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.1 s LCP 3.4 shttps://resources.redbull.com/fonts/bull-text/v1/full/BullText-Medium.woff2BullText-Medium.woff2 https://resources.redbull.com/fonts/bull-text/v1/full/BullText-Medium.woff2 — 44.7 KiB — 0 ms — font-display: swaphttps://resources.redbull.com/fonts/bull/v3/full/Bull-Bold.woff2Bull-Bold.woff2 https://resources.redbull.com/fonts/bull/v3/full/Bull-Bold.woff2 — 42.2 KiB — 0 ms — font-display: swaphttps://resources.redbull.com/fonts/bull-text/v1/full/BullText-Regular.woff2BullText-Regular.woff2 https://resources.redbull.com/fonts/bull-text/v1/full/BullText-Regular.woff2 — 44.8 KiB — 0 ms — font-display: swaphttps://resources.redbull.com/fonts/bull-text/v1/full/BullText-Bold.woff2BullText-Bold.woff2 https://resources.redbull.com/fonts/bull-text/v1/full/BullText-Bold.woff2 — 44.4 KiB — 0 ms — font-display: swap
BullText-Medium.woff2 woff2 swap
Size 45 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Bull-Bold.woff2 woff2 swap
Size 42 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BullText-Regular.woff2 woff2 swap
Size 45 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BullText-Bold.woff2 woff2 swap
Size 44 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
93 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 3098ms · 3023KB · €16/mo
www.redbullshop.com
Other
Costly
Execution 1140ms
Transfer 900 KB
Unused 52%
Monthly Cost €6/mo
www.redbullshop.com
Other
Costly
Execution 798ms
Transfer 88 KB
Monthly Cost €4/mo
www.redbullshop.com
Other
Costly
Execution 529ms
Transfer 1821 KB
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 283ms
Transfer 0 KB
Monthly Cost €2/mo
www.redbullshop.com
Other
Costly
Execution 241ms
Transfer 92 KB
Unused 40%
Monthly Cost €1/mo
rm.redbullshop.com
Other
Optional
Execution 107ms
Transfer 122 KB
Unused 52%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.redbullshop.com adds 1140ms and costs ~€6/month
  • www.redbullshop.com adds 798ms and costs ~€4/month
  • www.redbullshop.com adds 529ms and costs ~€3/month
  • Unattributable adds 283ms and costs ~€2/month
  • www.redbullshop.com adds 241ms and costs ~€1/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.redbullshop.com takes 1140ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of www.redbullshop.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

www.redbullshop.com takes 798ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.redbullshop.com takes 529ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 283ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.redbullshop.com takes 241ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of rm.redbullshop.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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