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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
68
GRADE
D
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
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.
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.

6.47 s

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

39.53 s

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

830 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.

15.15 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.

40.74 s

Page Load Progression

599 ms
1.2 s
1.8 s
2.4 s
3.0 s
3.6 s
4.2 s
4.8 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
8.0 MB transferred, 82 requests
FIX
8.0 MB transferred, 82 requests
Critical::
Page weighs 11.8 MB (8.0 MB transferred)
Warning::
Images are 6.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 6.0 MB
Warning::
JavaScript is 1.5 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.5 MB
Info::
CSS is 233 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 233 KB
Info::
82 HTTP requests
Info::
Estimated 1.7 g CO2 per page load
8.0 MB / 2.4 MB budget
8.0 MB transferred
82 requests
1.7 g CO2 per page load
Images 6.0 MiB 76%
JavaScript 1.5 MiB 19%
CSS 232.6 KiB 3%
Fonts 126.7 KiB 2%
Other 56.6 KiB 1%
HTML 21.4 KiB 0%
Other 3.8 KiB 0%
Other 2.2 KiB 0%
0 2.4 MB 4.9 MB
Over budget

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

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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 (8.0 MiB of 8.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4488ms total JS execution
FIX
4488ms total JS execution
Warning::
https://www.kantar.com/: 1223ms CPU time
Warning::
https://consent.cookiebot.com/uc.js: 1100ms CPU time
Warning::
Unattributable: 526ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PR5...: 416ms CPU time
Warning::
https://www.kantar.com/-/media/themes/kantar/globa...: 388ms CPU time
Warning::
Third-party scripts: 4488ms (100% of total)

Main Thread Breakdown

Script Evaluation 44% Other 21% Style & Layout 15% Parse HTML & CSS 8% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.kantar.com/1223ms198ms4ms3rd
https://consent.cookiebot.com/uc.js1100ms687ms25ms3rd
Unattributable526ms15ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PR5V98Q416ms340ms71ms3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Z388ms190ms24ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-10998979353&cx=c&gtm=4e64k1197ms163ms33ms3rd
https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Z175ms113ms41ms3rd
https://www.googletagmanager.com/gtag/destination?id=AW-10778449071&cx=c&gtm=4e64k1127ms97ms29ms3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Z85ms60ms16ms3rd
https://consent.cookiebot.com/5e052ca0-c111-4ceb-86ce-5397a2b7f70d/cc.js?renew=false&referer=www.kantar.com&dnt=false&init=false&georegions=%5B%7B%22r%22%3A%22US%22%2C%22i%22%3A%220c371769-97fe-4da9-8bfb-51d9017b16b9%22%7D%5D80ms9ms42ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
36 scripts, 784 KB unused
FIX
36 scripts, 784 KB unused
Warning::
https://www.kantar.com/-/media/themes/kantar/globa...: 157 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.kantar.com/-/media/themes/kantar/globa...: 157 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/destination?...: 80 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PR5...: 79 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-109...: 64 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 784 KB
784 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Z218 KB157 KB (73%)✓3rd
https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Z218 KB157 KB (73%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=AW-10778449071&cx=c&gtm=4e64k1146 KB80 KB (55%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PR5V98Q191 KB79 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-10998979353&cx=c&gtm=4e64k1145 KB64 KB (44%)✓3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Z67 KB49 KB (74%)✓3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Z67 KB49 KB (74%)✓3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Z99 KB48 KB (49%)✓3rd
https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Z99 KB48 KB (49%)✓3rd
https://consent.cookiebot.com/uc.js?cbid=5e052ca0-c111-4ceb-86ce-5397a2b7f70d&implementation=gtm&consentmode-dataredaction=dynamic27 KB26 KB (97%)✓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
Page Weight Inventory
Action
82 resources · 8.0 MB · 784 KB savings available
FIX
82 resources · 8.0 MB · 784 KB savings available
Warning::
Page weight 7.0 MB over 1MB target
Got: 8.0 MB Expected: ≤ 1 MB
Info::
~784 KB of savings available
Warning::
81 third-party resources (100% of weight)
Info::
18 resources over 200KB
82 resources · 8.0 MiB · 81 third-party 7.0 MiB over 1MB target
Image 76% · 6.1 MiB
JavaScript 19% · 1.5 MiB
CSS 3% · 232.6 KiB
Font 2% · 126.7 KiB
Document 0% · 21.9 KiB
Other 0% · 5.2 KiB

~783.8 KiB of savings available

Remove unused JavaScript: 783.8 KiB
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.

B
Image Optimization
25 images, 0 KB saveable
REVIEW
25 images, 0 KB saveable
Info::
All images are well-optimized
25 images 6.0 MB
0 oversized -0 KB
23 legacy format
0 missing dimensions CLS risk
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
3 fonts (127 KB)
PASS
3 fonts (127 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

127 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s FCP 6.5 s LCP 39.5 shttps://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Bold-woff2.woff2KantarBrownWeb-Bold-wof... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Bold-woff2.woff2 — 41.6 KiB — 284 ms — font-display: swaphttps://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Regular-woff2.woff2KantarBrownWeb-Regular-... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Regular-woff2.woff2 — 42.2 KiB — 160 ms — font-display: swaphttps://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Light-woff2.woff2KantarBrownWeb-Light-wo... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/fonts/KantarBrownWeb-Light-woff2.woff2 — 43.0 KiB — 169 ms — font-display: swap
KantarBrownWeb-Bold-wof... woff2 swap
Size 42 KB
Load time 284 ms
Start 603 ms
Risk FOUT — text flashes from fallback to web font
KantarBrownWeb-Regular-... woff2 swap
Size 42 KB
Load time 160 ms
Start 603 ms
Risk FOUT — text flashes from fallback to web font
KantarBrownWeb-Light-wo... woff2 swap
Size 43 KB
Load time 169 ms
Start 603 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
16 hints, 0 missing preconnects
PASS
16 hints, 0 missing preconnects
Info::
Page uses 16 resource hint(s)

Current Resource Hints

preconnect
+6
16
preload
—
dns-prefetch
—
prefetch
—

16 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
82 requests over 1826ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s FCP 6.5 s LCP 39.5 shttps://kantar.com// https://kantar.com/ — 301 — 567 B — 128 ms — http/1.1https://www.kantar.com/www.kantar.com/ https://www.kantar.com/ — 200 — 20.6 KiB — 151 ms — http/1.1https://www.kantar.com/-/media/foundation/theming/kantargrid/kantargrid/styles/optimized-min.css?t=20250627T162917Zwww.kantar.com/-/media/foundation/t... https://www.kantar.com/-/media/foundation/theming/kantargrid/kantargrid/styles/optimized-min.css?t=20250627T162917Z — 200 — 2.8 KiB — 36 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/core-libraries/styles/optimized-min.css?t=20260409T091038Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/core-libraries/styles/optimized-min.css?t=20260409T091038Z — 200 — 20.2 KiB — 23 ms — http/1.1https://www.kantar.com/-/media/base-themes/main-theme/styles/optimized-min.css?t=20250705T022946Zwww.kantar.com/-/media/base-themes/... https://www.kantar.com/-/media/base-themes/main-theme/styles/optimized-min.css?t=20250705T022946Z — 200 — 2.5 KiB — 37 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/styles/optimized-min.css?t=20260409T091049Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/styles/optimized-min.css?t=20260409T091049Z — 200 — 206.9 KiB — 35 ms — http/1.1https://cdn.bc0a.com/autopilot/f00000000300611/autopilot_sdk.jscdn.bc0a.com/autopilot/f00000000300... https://cdn.bc0a.com/autopilot/f00000000300611/autopilot_sdk.js — 200 — 24.5 KiB — 113 ms — h2https://consent.cookiebot.com/uc.jsconsent.cookiebot.com/uc.js https://consent.cookiebot.com/uc.js — 200 — 27.0 KiB — 75 ms — h2https://www.kantar.com/-/media/project/kantar/global/signal_intelligence.jpgwww.kantar.com/-/media/project/kant... https://www.kantar.com/-/media/project/kantar/global/signal_intelligence.jpg — 200 — 406.5 KiB — 37 ms — http/1.1https://www.kantar.com/-/media/project/kantar/global/decision_intelligence.jpgwww.kantar.com/-/media/project/kant... https://www.kantar.com/-/media/project/kantar/global/decision_intelligence.jpg — 200 — 465.3 KiB — 47 ms — http/1.1https://www.kantar.com/-/media/project/kantar/global/stategic_intelligence.jpgwww.kantar.com/-/media/project/kant... https://www.kantar.com/-/media/project/kantar/global/stategic_intelligence.jpg — 200 — 482.1 KiB — 26 ms — http/1.1https://www.kantar.com/-/media/project/kantar/shared/sustainability-in-advertising.jpgwww.kantar.com/-/media/project/kant... https://www.kantar.com/-/media/project/kantar/shared/sustainability-in-advertising.jpg — 200 — 255.5 KiB — 51 ms — http/1.1https://www.kantar.com/-/media/project/kantar/global/kantar-brandz-netherlands-2026-launch-article.jpgwww.kantar.com/-/media/project/kant... https://www.kantar.com/-/media/project/kantar/global/kantar-brandz-netherlands-2026-launch-article.jpg — 200 — 101.8 KiB — 39 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Z — 200 — 218.1 KiB — 20 ms — http/1.1https://ixfd2-api.bc0a.com/api/ixf/1.0.0/get_capsule/f00000000300611/01314143031?client=js_sdk&client_version=1.5.16ixfd2-api.bc0a.com/api/ixf/1.0.0/ge... https://ixfd2-api.bc0a.com/api/ixf/1.0.0/get_capsule/f00000000300611/01314143031?client=js_sdk&client_version=1.5.16 — 200 — 1.5 KiB — 178 ms — h2https://www.kantar.com/-/media/base-themes/xa-api/scripts/optimized-min.js?t=20150515T071943:635672711833756301Zwww.kantar.com/-/media/base-themes/... https://www.kantar.com/-/media/base-themes/xa-api/scripts/optimized-min.js?t=20150515T071943:635672711833756301Z — 200 — 2.3 KiB — 22 ms — http/1.1https://consentcdn.cookiebot.com/consentconfig/5e052ca0-c111-4ceb-86ce-5397a2b7f70d/settings.jsonconsentcdn.cookiebot.com/consentcon... https://consentcdn.cookiebot.com/consentconfig/5e052ca0-c111-4ceb-86ce-5397a2b7f70d/settings.json — 200 — 966 B — 71 ms — h2https://www.kantar.com/-/media/base-themes/main-theme/scripts/optimized-min.js?t=20250705T022935Zwww.kantar.com/-/media/base-themes/... https://www.kantar.com/-/media/base-themes/main-theme/scripts/optimized-min.js?t=20250705T022935Z — 200 — 1.8 KiB — 38 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-google-maps-connector/scripts/optimized-min.js?t=20260409T091212Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-google-maps-connector/scripts/optimized-min.js?t=20260409T091212Z — 200 — 13.7 KiB — 24 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-maps/scripts/optimized-min.js?t=20260409T091100Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-maps/scripts/optimized-min.js?t=20260409T091100Z — 200 — 5.3 KiB — 26 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Z — 200 — 66.6 KiB — 39 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Z — 200 — 98.9 KiB — 27 ms — http/1.1https://extend.vimeocdn.com/ga/168265051.jsextend.vimeocdn.com/ga/168265051.js https://extend.vimeocdn.com/ga/168265051.js — 200 — 5.8 KiB — 77 ms — h2https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/images/arrowwww.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/images/arrow — 200 — 806 B — 134 ms — http/1.1https://www.googletagmanager.com/gtm.js?id=GTM-PR5V98Qwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-PR5V98Q — 200 — 191.4 KiB — 174 ms — h2https://consentcdn.cookiebot.com/consentconfig/5e052ca0-c111-4ceb-86ce-5397a2b7f70d/kantar.com/configuration.jsconsentcdn.cookiebot.com/consentcon... 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103 ms — h3https://tags.srv.stackadapt.com/sa.csstags.srv.stackadapt.com/sa.css https://tags.srv.stackadapt.com/sa.css — 200 — 165 B — 100 ms — h2https://tags.srv.stackadapt.com/sa.jpegtags.srv.stackadapt.com/sa.jpeg https://tags.srv.stackadapt.com/sa.jpeg — 200 — 1.6 KiB — 288 ms — h2https://px4.ads.linkedin.com/collect?v=2&fmt=js&pid=4042124&time=1776902131119&url=https%3A%2F%2Fwww.kantar.com%2F&e_ipv6=AQKryy8qUrZwrwAAAZ23ns4-GH57Jz44WTVCswpW2bwtte_z05y_WfUfQPZx_Mj4X5XIAoh-71mdpx4.ads.linkedin.com/collect?v=2&fm... https://px4.ads.linkedin.com/collect?v=2&fmt=js&pid=4042124&time=1776902131119&url=https%3A%2F%2Fwww.kantar.com%2F&e_ipv6=AQKryy8qUrZwrwAAAZ23ns4-GH57Jz44WTVCswpW2bwtte_z05y_WfUfQPZx_Mj4X5XIAoh-71md — 200 — 692 B — 286 ms — h2https://tags.srv.stackadapt.com/saq_pxl?uid=UFxN5xxE2gPo9s6vFzXKag&is_js=true&landing_url=https%3A%2F%2Fwww.kantar.com%2F&t=Kantar.%20Intelligence%20for%20Brand%20Growth.&tip=Og4fJqnLDmNY8KlFWu4lWMp_dabaRLW9OkUrhfD3R20&host=https%3A%2F%2Fwww.kantar.com&sa_conv_data_css_value=%27%27&sa_conv_data_image_value=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&l_src=&l_src_d=&u_src=&u_src_d=&shop=false&sa-user-id-v4=s%253A.o6W7wkJsHSTU4%252BLlDruZ%252FwNjVcUZZMvakQpSatDoAgo&sa-user-id-v3=s%253AAQAKIPd_u9vYlHS_RakQViWJ-znM5UHNp0i9nOWRaE63IVvuEOwBGAQg87-lzwYwAToEp97kxkIEKEwcHg.xOUB162%252FDJrgYcYXBlPjzF9Ddf84bX6X%252FSXB229aoHM&sa-user-id-v2=s%253AjGC7G2eqXcRy7oJD_jAl5I3jvNw.csyxa%252F9EQGoHlve6l0IZpaETpR2a4FE8Aa4VIRy%252Bixs&sa-user-id=s%253A0-8c60bb1b-67aa-5dc4-72ee-8243fe3025e4.Om%252FEHaD0L8T9kQ0wTyWHlbSQ3dS4Er7r6mGB3ZFLubEtags.srv.stackadapt.com/saq_pxl?uid... https://tags.srv.stackadapt.com/saq_pxl?uid=UFxN5xxE2gPo9s6vFzXKag&is_js=true&landing_url=https%3A%2F%2Fwww.kantar.com%2F&t=Kantar.%20Intelligence%20for%20Brand%20Growth.&tip=Og4fJqnLDmNY8KlFWu4lWMp_dabaRLW9OkUrhfD3R20&host=https%3A%2F%2Fwww.kantar.com&sa_conv_data_css_value=%27%27&sa_conv_data_image_value=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&l_src=&l_src_d=&u_src=&u_src_d=&shop=false&sa-user-id-v4=s%253A.o6W7wkJsHSTU4%252BLlDruZ%252FwNjVcUZZMvakQpSatDoAgo&sa-user-id-v3=s%253AAQAKIPd_u9vYlHS_RakQViWJ-znM5UHNp0i9nOWRaE63IVvuEOwBGAQg87-lzwYwAToEp97kxkIEKEwcHg.xOUB162%252FDJrgYcYXBlPjzF9Ddf84bX6X%252FSXB229aoHM&sa-user-id-v2=s%253AjGC7G2eqXcRy7oJD_jAl5I3jvNw.csyxa%252F9EQGoHlve6l0IZpaETpR2a4FE8Aa4VIRy%252Bixs&sa-user-id=s%253A0-8c60bb1b-67aa-5dc4-72ee-8243fe3025e4.Om%252FEHaD0L8T9kQ0wTyWHlbSQ3dS4Er7r6mGB3ZFLubE — 200 — 287 B — 100 ms — h2https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/core-libraries/scripts/optimized-min.js?t=20260409T091022Z — 200 — 218.1 KiB — 21 ms — http/1.1https://px.ads.linkedin.com/wa/?medium=fetch&fmt=gpx.ads.linkedin.com/wa/?medium=fetc... https://px.ads.linkedin.com/wa/?medium=fetch&fmt=g — 204 — 614 B — 149 ms — h2https://www.kantar.com/-/media/themes/kantar/global/kantarmain/images/favicon.pngwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/images/favicon.png — 200 — 3.4 KiB — 18 ms — http/1.1https://www.kantar.com/-/media/base-themes/xa-api/scripts/optimized-min.js?t=20150515T071943:635672711833756301Zwww.kantar.com/-/media/base-themes/... https://www.kantar.com/-/media/base-themes/xa-api/scripts/optimized-min.js?t=20150515T071943:635672711833756301Z — 200 — 2.3 KiB — 18 ms — http/1.1https://www.kantar.com/-/media/base-themes/main-theme/scripts/optimized-min.js?t=20250705T022935Zwww.kantar.com/-/media/base-themes/... https://www.kantar.com/-/media/base-themes/main-theme/scripts/optimized-min.js?t=20250705T022935Z — 200 — 1.8 KiB — 16 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-google-maps-connector/scripts/optimized-min.js?t=20260409T091212Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-google-maps-connector/scripts/optimized-min.js?t=20260409T091212Z — 200 — 13.7 KiB — 17 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-maps/scripts/optimized-min.js?t=20260409T091100Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-maps/scripts/optimized-min.js?t=20260409T091100Z — 200 — 5.3 KiB — 16 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/kantar-search/scripts/optimized-min.js?t=20260409T091220Z — 200 — 66.6 KiB — 18 ms — http/1.1https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Zwww.kantar.com/-/media/themes/kanta... https://www.kantar.com/-/media/themes/kantar/global/kantarmain/scripts/optimized-min.js?t=20260409T091121Z — 200 — 98.9 KiB — 19 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/perspective-carousel.js?v=88e9a69b08www.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/perspective-carousel.js?v=88e9a69b08 — 200 — 1.7 KiB — 31 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/Anchor.js?v=d76a9c5a2cwww.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/Anchor.js?v=d76a9c5a2c — 200 — 1.4 KiB — 36 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/Srch.js?v=e533f5d355www.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/Srch.js?v=e533f5d355 — 200 — 2.2 KiB — 19 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/vendors_HeroMedia.js?v=51bb5d07d0www.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/vendors_HeroMedia.js?v=51bb5d07d0 — 200 — 9.4 KiB — 32 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/HeroMedia.js?v=ba387fde0fwww.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/HeroMedia.js?v=ba387fde0f — 200 — 5.0 KiB — 20 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/NavFooter.js?v=6e2ae38e75www.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/NavFooter.js?v=6e2ae38e75 — 200 — 1.4 KiB — 31 ms — http/1.1https://extend.vimeocdn.com/ga/168265051.jsextend.vimeocdn.com/ga/168265051.js https://extend.vimeocdn.com/ga/168265051.js — 200 — 78 B — 3 ms — h2https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/herotransparent.js?v=5f9e89654fwww.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/herotransparent.js?v=5f9e89654f — 200 — 1.9 KiB — 23 ms — http/1.1https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/herostat.js?v=9779e323cfwww.kantar.com/-/media/Themes/Kanta... https://www.kantar.com/-/media/Themes/Kantar/Global/KantarMain/chunks/herostat.js?v=9779e323cf — 200 — 1.6 KiB — 18 ms — http/1.1
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 4488ms · 1261KB · $60/mo
www.kantar.com
Other
Costly
Execution 1223ms
Transfer 21 KB
Monthly Cost $16/mo
consent.cookiebot.com
Other
Costly
Execution 1100ms
Transfer 27 KB
Monthly Cost $15/mo
Unattributable
Other
Costly
Execution 526ms
Transfer 0 KB
Monthly Cost $7/mo
Google Tag Manager
Tag Manager
Costly
Execution 416ms
Transfer 191 KB
Unused 41%
Monthly Cost $6/mo
www.kantar.com
Other
Costly
Execution 388ms
Transfer 99 KB
Unused 49%
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Optional
Execution 197ms
Transfer 145 KB
Unused 44%
Monthly Cost $3/mo
www.kantar.com
Other
Optional
Execution 175ms
Transfer 218 KB
Unused 73%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 127ms
Transfer 146 KB
Unused 55%
Monthly Cost $2/mo
www.kantar.com
Other
Optional
Execution 85ms
Transfer 67 KB
Unused 74%
Monthly Cost $1/mo
consent.cookiebot.com
Other
Optional
Execution 80ms
Transfer 114 KB
Unused 22%
Monthly Cost $1/mo
www.kantar.com
Other
Optional
Execution 59ms
Transfer 207 KB
Monthly Cost $1/mo
LinkedIn Insight
Advertising
Optional
Execution 57ms
Transfer 19 KB
Monthly Cost $1/mo
tags.srv.stackadapt.com
Other
Optional
Execution 56ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.kantar.com adds 1223ms and costs ~$16/month
  • consent.cookiebot.com adds 1100ms and costs ~$15/month
  • Unattributable adds 526ms and costs ~$7/month
  • Google Tag Manager adds 416ms and costs ~$6/month
  • www.kantar.com adds 388ms and costs ~$5/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.kantar.com takes 1223ms 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

consent.cookiebot.com takes 1100ms 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 526ms 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

Google Tag Manager takes 416ms 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.kantar.com takes 388ms 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

73% of www.kantar.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

55% of Google Tag Manager'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

74% of www.kantar.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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