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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
3
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

1.02 s

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

1.65 s

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

214 ms

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

0.030

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

1.88 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.

2.70 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
5 PASS 5 REVIEW 3 FIX
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 (1.8 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
80 resources · 1.8 MB · 284 KB savings available
FIX
80 resources · 1.8 MB · 284 KB savings available
Warning::
Page weight 869 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Info::
~284 KB of savings available
Warning::
79 third-party resources (100% of weight)
80 resources · 1.8 MiB · 79 third-party 869.4 KiB over 1MB target
JavaScript 50% · 943.2 KiB
Image 27% · 510.1 KiB
Font 12% · 221.0 KiB
Other 9% · 162.7 KiB
CSS 2% · 31.6 KiB
Document 1% · 24.8 KiB

~283.8 KiB of savings available

Remove unused JavaScript: 283.8 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
C
Page Weight Budget
Action
1.8 MB transferred, 80 requests
REVIEW
1.8 MB transferred, 80 requests
Info::
Page weighs 5.2 MB (1.8 MB transferred)
Warning::
JavaScript is 739 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 739 KB
Info::
Fonts are 221 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 221 KB
Info::
80 HTTP requests
Info::
Estimated 0.39 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
80 requests
0.39 g CO2 per page load
JavaScript 739.1 KiB 39%
Images 508.3 KiB 27%
Other 343.4 KiB 18%
Fonts 221.0 KiB 12%
CSS 31.6 KiB 2%
HTML 23.7 KiB 1%
Other 21.8 KiB 1%
Other 4.2 KiB 0%
Other 260 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

C
Image Optimization
Action
31 images, 0 KB saveable
REVIEW
31 images, 0 KB saveable
Warning::
https://www.mindtools.com/wp-content/uploads/2024/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.mindtools.com/wp-content/uploads/2024/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.mindtools.com/wp-content/uploads/2025/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
31 images 508 KB
0 oversized -0 KB
7 legacy format
3 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

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
JS Execution Cost
Action
1770ms total JS execution
REVIEW
1770ms total JS execution
Warning::
https://www.mindtools.com/: 559ms CPU time
Warning::
https://cdn-cookieyes.com/client_data/d464018ff5ed...: 381ms CPU time
Warning::
Unattributable: 275ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-N54...: 144ms CPU time
Info::
https://www.mindtools.com/cdn-cgi/challenge-platfo...: 101ms CPU time
Warning::
Third-party scripts: 1770ms (100% of total)

Main Thread Breakdown

Script Evaluation 53% Other 20% Style & Layout 11% Script Parsing & Compilation 9% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.mindtools.com/559ms177ms56ms3rd
https://cdn-cookieyes.com/client_data/d464018ff5ed3cb7e6d8737c/banner.js381ms309ms6ms3rd
Unattributable275ms45ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N54ZTVX9144ms113ms21ms3rd
https://www.mindtools.com/cdn-cgi/challenge-platform/scripts/jsd/main.js101ms97ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-1BCQTWL64G&cx=c&gtm=4e64h1h191ms69ms21ms3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/gsap.min.js?ver=0.26476ms22ms3ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-382358260&cx=c&gtm=4e64h1h175ms55ms19ms3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/app.bundle.js?ver=0.26468ms39ms9ms3rd
C
JS Bundles
Action
22 scripts, 284 KB unused
REVIEW
22 scripts, 284 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-1BCQ...: 67 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-N54...: 64 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-382...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mindtools.com/wp-content/themes/mindto...: 39 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mindtools.com/wp-content/themes/mindto...: 28 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 284 KB
284 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-1BCQTWL64G&cx=c&gtm=4e64h1h1178 KB67 KB (37%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N54ZTVX9164 KB64 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-382358260&cx=c&gtm=4e64h1h1147 KB63 KB (43%)✓3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=0.26441 KB39 KB (97%)✓3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/app.bundle.js?ver=0.26447 KB28 KB (61%)✓3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=1.0.041 KB24 KB (59%)✓3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/ScrollTrigger.min.js?ver=0.26412 KB—✓3rd
https://dev.visualwebsiteoptimizer.com/cdn/edrv/nc-367e6623b8f828e1b7169e212977ec69.br.js26 KB—✓3rd
blob:https://www.mindtools.com/a36f0987-9cae-4bb4-b839-34e3e2ae848c-0 KB—✓3rd
https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/gsap.min.js?ver=0.26427 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

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
6 fonts (221 KB)
PASS
6 fonts (221 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

221 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.0 s LCP 1.7 shttps://fonts.gstatic.com/s/redhatdisplay/v21/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff28vIQ7wUr0m80wwYf0QCXZzY... https://fonts.gstatic.com/s/redhatdisplay/v21/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2 — 30.0 KiB — 18 ms — font-display: swaphttps://fonts.gstatic.com/s/librefranklin/v20/jizDREVItHgc8qDIbSTKq4XkRiUf2zcZiVbJ.woff2jizDREVItHgc8qDIbSTKq4X... https://fonts.gstatic.com/s/librefranklin/v20/jizDREVItHgc8qDIbSTKq4XkRiUf2zcZiVbJ.woff2 — 28.7 KiB — 25 ms — font-display: swapdata:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA…font-woff;charset=utf-8... data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA… — 1.6 KiB — 101 ms — font-display: swaphttps://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/baeb6c5276015bdfbafd.woff2baeb6c5276015bdfbafd.woff2 https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/baeb6c5276015bdfbafd.woff2 — 41.6 KiB — 115 ms — font-display: swaphttps://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/3664d378240660fa15c5.woff23664d378240660fa15c5.woff2 https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/3664d378240660fa15c5.woff2 — 87.1 KiB — 96 ms — font-display: swaphttps://fonts.gstatic.com/s/librefranklin/v20/jizBREVItHgc8qDIbSTKq4XkRiUa6zUTjnTLgNs.woff2jizBREVItHgc8qDIbSTKq4X... https://fonts.gstatic.com/s/librefranklin/v20/jizBREVItHgc8qDIbSTKq4XkRiUa6zUTjnTLgNs.woff2 — 32.1 KiB — 7 ms — font-display: swap
8vIQ7wUr0m80wwYf0QCXZzY... woff2 swap
Size 30 KB
Load time 18 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
jizDREVItHgc8qDIbSTKq4X... woff2 swap
Size 29 KB
Load time 25 ms
Start 432 ms
Risk FOUT — text flashes from fallback to web font
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 101 ms
Start 514 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
baeb6c5276015bdfbafd.woff2 woff2 swap
Size 42 KB
Load time 115 ms
Start 581 ms
Risk FOUT — text flashes from fallback to web font
3664d378240660fa15c5.woff2 woff2 swap
Size 87 KB
Load time 96 ms
Start 581 ms
Risk FOUT — text flashes from fallback to web font
jizBREVItHgc8qDIbSTKq4X... woff2 swap
Size 32 KB
Load time 7 ms
Start 1.9 s
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
80 requests over 1998ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.0 s LCP 1.7 shttps://mindtools.com// https://mindtools.com/ — 302 — 434 B — 30 ms — h2https://www.mindtools.com/www.mindtools.com/ https://www.mindtools.com/ — 200 — 23.7 KiB — 100 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/style.css?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/style.css?ver=0.264 — 200 — 24.0 KiB — 97 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.css%20?ver=1.0.0www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.css%20?ver=1.0.0 — 301 — 1.1 KiB — 106 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/app.bundle.js?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/app.bundle.js?ver=0.264 — 200 — 46.6 KiB — 93 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/legacy.js?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/build/frontend/legacy.js?ver=0.264 — 200 — 6.4 KiB — 79 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=0.264 — 200 — 40.8 KiB — 97 ms — h2https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swapfonts.googleapis.com/css2?family=Mo... https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap — 200 — 1.1 KiB — 24 ms — h2https://www.mindtools.com/wp-content/uploads/2024/10/Mindtools-logo-Black.svgwww.mindtools.com/wp-content/upload... https://www.mindtools.com/wp-content/uploads/2024/10/Mindtools-logo-Black.svg — 200 — 3.9 KiB — 81 ms — h2https://www.mindtools.com/wp-content/uploads/external/6b97c2dce27f7c9231c75d973f9ee716@1x.pngwww.mindtools.com/wp-content/upload... https://www.mindtools.com/wp-content/uploads/external/6b97c2dce27f7c9231c75d973f9ee716@1x.png — 200 — 1.2 KiB — 84 ms — h2https://dev.visualwebsiteoptimizer.com/j.php?a=737079&u=https%3A%2F%2Fwww.mindtools.com%2F&vn=2.1&x=truedev.visualwebsiteoptimizer.com/j.ph... https://dev.visualwebsiteoptimizer.com/j.php?a=737079&u=https%3A%2F%2Fwww.mindtools.com%2F&vn=2.1&x=true — 200 — 10.2 KiB — 42 ms — h2https://dev.visualwebsiteoptimizer.com/cdn/edrv/worker-57f1b8d94a5f9167e9bcdcf861046428.br.jsdev.visualwebsiteoptimizer.com/cdn/... https://dev.visualwebsiteoptimizer.com/cdn/edrv/worker-57f1b8d94a5f9167e9bcdcf861046428.br.js — 200 — 71.7 KiB — 59 ms — h3https://dev.visualwebsiteoptimizer.com/cdn/edrv/va_gq-d728c477f0f4777c8be7f1f120d0c70b.br.jsdev.visualwebsiteoptimizer.com/cdn/... https://dev.visualwebsiteoptimizer.com/cdn/edrv/va_gq-d728c477f0f4777c8be7f1f120d0c70b.br.js — 200 — 96.5 KiB — 57 ms — h3https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=1.0.0www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.js?ver=1.0.0 — 200 — 40.8 KiB — 82 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/blocks/acf/testimonial-carousel/script.js?ver=1.0.0www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/blocks/acf/testimonial-carousel/script.js?ver=1.0.0 — 200 — 1.2 KiB — 76 ms — h2https://fonts.googleapis.com/css2?family=Libre+Franklin:ital,wght@0,400;0,600;1,400;1,600&display=swapfonts.googleapis.com/css2?family=Li... https://fonts.googleapis.com/css2?family=Libre+Franklin:ital,wght@0,400;0,600;1,400;1,600&display=swap — 200 — 733 B — 18 ms — h3https://fonts.googleapis.com/css2?family=Red+Hat+Display:wght@400;600&display=swapfonts.googleapis.com/css2?family=Re... https://fonts.googleapis.com/css2?family=Red+Hat+Display:wght@400;600&display=swap — 200 — 453 B — 21 ms — h3https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.css?ver=1.0.0www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/swiperjs/swiper.min.css?ver=1.0.0 — 200 — 5.4 KiB — 87 ms — h2blob:https://www.mindtools.com/a36f0987-9cae-4bb4-b839-34e3e2ae848cwww.mindtools.com/a36f0987-9cae-4bb... blob:https://www.mindtools.com/a36f0987-9cae-4bb4-b839-34e3e2ae848c — 200 — -1 B — 164 ms — blobhttps://www.mindtools.com/wp-content/uploads/2025/12/virgin-trains-logo-home.pngwww.mindtools.com/wp-content/upload... https://www.mindtools.com/wp-content/uploads/2025/12/virgin-trains-logo-home.png — 200 — 5.2 KiB — 67 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/gsap.min.js?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/gsap.min.js?ver=0.264 — 200 — 26.5 KiB — 70 ms — h2https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/ScrollTrigger.min.js?ver=0.264www.mindtools.com/wp-content/themes... https://www.mindtools.com/wp-content/themes/mindtools-theme/frontend/js/vendor/gsap/ScrollTrigger.min.js?ver=0.264 — 200 — 11.7 KiB — 70 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-N54ZTVX9www.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-N54ZTVX9 — 200 — 164.3 KiB — 64 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
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 1770ms · 626KB · €19/mo
www.mindtools.com
Other
Costly
Execution 559ms
Transfer 24 KB
Monthly Cost €6/mo
cdn-cookieyes.com
Other
Costly
Execution 381ms
Transfer 39 KB
Monthly Cost €4/mo
Unattributable
Other
Costly
Execution 275ms
Transfer 0 KB
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 144ms
Transfer 164 KB
Unused 39%
Monthly Cost €2/mo
www.mindtools.com
Other
Optional
Execution 101ms
Transfer 1 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 91ms
Transfer 178 KB
Unused 37%
Monthly Cost €1/mo
www.mindtools.com
Other
Optional
Execution 76ms
Transfer 27 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 75ms
Transfer 147 KB
Unused 43%
Monthly Cost €1/mo
www.mindtools.com
Other
Optional
Execution 68ms
Transfer 47 KB
Unused 61%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.mindtools.com adds 559ms and costs ~€6/month
  • cdn-cookieyes.com adds 381ms and costs ~€4/month
  • Unattributable adds 275ms and costs ~€3/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.mindtools.com takes 559ms 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

cdn-cookieyes.com takes 381ms 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 275ms 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

61% of www.mindtools.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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