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https://panasonic.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
5
PASS
6
INFO
2

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

Mobile Desktop
91
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.
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.

1.07 s

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

1.64 s

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

0 ms

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

0.025

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

1.32 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.

1.64 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
6 PASS 5 REVIEW 2 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 (1.1 MiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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
Page Weight Budget
1.1 MB transferred, 100 requests
REVIEW
1.1 MB transferred, 100 requests
Info::
Page weighs 2.8 MB (1.1 MB transferred)
Info::
100 HTTP requests
Info::
Estimated 0.23 g CO2 per page load
1.1 MB / 2.4 MB budget
1.1 MB transferred
100 requests
0.23 g CO2 per page load
Images 646.9 KiB 56%
JavaScript 373.4 KiB 33%
Other 42.5 KiB 4%
CSS 32.2 KiB 3%
HTML 18.3 KiB 2%
Fonts 12.6 KiB 1%
Other 10.6 KiB 1%
Other 9.3 KiB 1%
0 2.4 MB 4.9 MB
Under budget
C
Image Optimization
Action
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://www.panasonic.com/content/dam/Panasonic/es... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/Gl... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/eu... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/es... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/es... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/ho... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/es... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/content/dam/Panasonic/Gl... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.panasonic.com/etc/designs/panasonic/ho... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 647 KB
0 oversized -0 KB
23 legacy format
13 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

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

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

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

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 Bundles
Action
54 scripts, 169 KB unused
REVIEW
54 scripts, 169 KB unused
Warning::
https://cdn-apac.onetrust.com/scripttemplates/2025...: 66 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co...: 59 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co...: 22 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.panasonic.com/etc/designs/panasonic/co...: 22 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 169 KB
169 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn-apac.onetrust.com/scripttemplates/202512.1.0/otBannerSdk.js126 KB66 KB (52%)✓3rd
https://www.panasonic.com/etc/designs/panasonic/countrytop-clientlibs/js/jquery-ui.min_cache_wVsQCN7DyJZ-plenu0uq7A.js67 KB59 KB (89%)✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery_cache_prY1DulKPqdFlcBly_WK8A.js0 KB22 KB (73%)✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery_cache_prY1DulKPqdFlcBly_WK8A.js30 KB22 KB (73%)✓3rd
https://www.panasonic.com/etc/designs/panasonic/eclinkage-libs_cache_3NufnWzi6olSSX9f1a_-jQ.js4 KB—✓3rd
https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/buymenu-libs/api/linkages/030/api-libs-impl.js?v=3.5.1.1_02 KB—✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery.jscrollpane.min_cache_mIBUnJi8bl4Q7-Y4tCJfsw.js5 KB—✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCCookieManager_cache_FPWL0dBzFPPJuopEBZ69yQ.js1 KB—✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/cookiemanager/optanon-consent_cache_1tFyglnhCJZ0OGxXEjhWnA.js1 KB—✓3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCLazyLoad_cache_q62sEjwNbDyn0NUYyuqSIw.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

B
Page Weight Inventory
100 resources · 1.1 MB · 169 KB savings available
REVIEW
100 resources · 1.1 MB · 169 KB savings available
Warning::
Page weight 122 KB over 1MB target
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~169 KB of savings available
Warning::
99 third-party resources (100% of weight)
Info::
1 resources over 200KB
100 resources · 1.1 MiB · 99 third-party 121.7 KiB over 1MB target
Image 57% · 657.8 KiB
JavaScript 34% · 394.4 KiB
CSS 3% · 36.8 KiB
Other 2% · 25.0 KiB
Document 2% · 19.0 KiB
Font 1% · 12.6 KiB

~168.9 KiB of savings available

Remove unused JavaScript: 168.9 KiB
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+
JS Execution Cost
439ms total JS execution
PASS
439ms total JS execution
Info::
https://www.panasonic.com/es/: 168ms CPU time
Info::
Unattributable: 132ms CPU time
Info::
https://cdn-apac.onetrust.com/scripttemplates/2025...: 72ms CPU time
Info::
https://www.panasonic.com/etc/designs/panasonic/co...: 67ms CPU time
Warning::
Third-party scripts: 439ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Other 28% Style & Layout 11% Rendering 9% Script Parsing & Compilation 7% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.panasonic.com/es/168ms5ms2ms3rd
Unattributable132ms16ms0ms3rd
https://cdn-apac.onetrust.com/scripttemplates/202512.1.0/otBannerSdk.js72ms51ms12ms3rd
https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery_cache_prY1DulKPqdFlcBly_WK8A.js67ms53ms9ms3rd
A+
Font Loading
1 fonts (13 KB)
PASS
1 fonts (13 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

13 KB total

Render-blocking

0

of 1

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 FCP 1.1 s LCP 1.6 shttps://fonts.gstatic.com/s/notosans/v27/o-0IIpQlx3QUlC5A4PNr5TRA.woff2o-0IIpQlx3QUlC5A4PNr5TR... https://fonts.gstatic.com/s/notosans/v27/o-0IIpQlx3QUlC5A4PNr5TRA.woff2 — 12.6 KiB — 29 ms — font-display: swap
o-0IIpQlx3QUlC5A4PNr5TR... woff2 swap
Size 13 KB
Load time 29 ms
Start 945 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
100 requests over 1592ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.1 s LCP 1.6 shttps://panasonic.com// https://panasonic.com/ — 301 — 101 B — 661 ms — h2https://www.panasonic.com/www.panasonic.com/ https://www.panasonic.com/ — 301 — 110 B — 46 ms — h2https://www.panasonic.com/es/www.panasonic.com/es/ https://www.panasonic.com/es/ — 200 — 17.3 KiB — 12 ms — h2https://cdn-apac.onetrust.com/consent/01494555-a9c6-4cdd-869b-b06b48336dac/OtAutoBlock.jscdn-apac.onetrust.com/consent/01494... https://cdn-apac.onetrust.com/consent/01494555-a9c6-4cdd-869b-b06b48336dac/OtAutoBlock.js — 200 — 15.8 KiB — 125 ms — h2https://cdn-apac.onetrust.com/scripttemplates/otSDKStub.jscdn-apac.onetrust.com/scripttemplat... https://cdn-apac.onetrust.com/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 110 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery_cache_prY1DulKPqdFlcBly_WK8A.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery_cache_prY1DulKPqdFlcBly_WK8A.js — 200 — 30.3 KiB — 48 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/intersection-observer_cache_NuRp_7Gw_OHYaou-ADQUnA.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/intersection-observer_cache_NuRp_7Gw_OHYaou-ADQUnA.js — 200 — 6.6 KiB — 43 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/hashtable_cache_Qx-Un8cvxbxLZG-SodJ6cA.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/hashtable_cache_Qx-Un8cvxbxLZG-SodJ6cA.js — 200 — 2.2 KiB — 43 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery.numberformatter-1.2.4.min_cache_LUUUjdlV_VogmdnHoAu54g.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery.numberformatter-1.2.4.min_cache_LUUUjdlV_VogmdnHoAu54g.js — 200 — 2.3 KiB — 30 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery.jscrollpane.min_cache_mIBUnJi8bl4Q7-Y4tCJfsw.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/jquery.jscrollpane.min_cache_mIBUnJi8bl4Q7-Y4tCJfsw.js — 200 — 5.2 KiB — 30 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCCookieManager_cache_FPWL0dBzFPPJuopEBZ69yQ.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCCookieManager_cache_FPWL0dBzFPPJuopEBZ69yQ.js — 200 — 1.5 KiB — 31 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/cookiemanager/optanon-consent_cache_1tFyglnhCJZ0OGxXEjhWnA.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/cookiemanager/optanon-consent_cache_1tFyglnhCJZ0OGxXEjhWnA.js — 200 — 932 B — 43 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCLazyLoad_cache_q62sEjwNbDyn0NUYyuqSIw.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/GWCLazyLoad_cache_q62sEjwNbDyn0NUYyuqSIw.js — 200 — 1.4 KiB — 43 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/common-lazyload_cache_Fzz4gcLT0_OxV3UrG3zA4g.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-clientlibs/js/common-lazyload_cache_Fzz4gcLT0_OxV3UrG3zA4g.js — 200 — 470 B — 44 ms — h2https://www.panasonic.com/etc/designs/panasonic/common-init_cache_BJQcCyDxGb9Yjo6nC5-DMg.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/common-init_cache_BJQcCyDxGb9Yjo6nC5-DMg.js — 200 — 1.9 KiB — 25 ms — h2https://www.panasonic.com/etc/designs/panasonic/countrytop-clientlibs/js/countrytop-ccdm-init_cache_IlQibmkhrs4CT30A15Z0UA.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/countrytop-clientlibs/js/countrytop-ccdm-init_cache_IlQibmkhrs4CT30A15Z0UA.js — 200 — 731 B — 26 ms — h2https://www.panasonic.com/etc/designs/panasonic/countrytop-libs_cache_MVitgzgrnH-ueipb9E_TBA.csswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/countrytop-libs_cache_MVitgzgrnH-ueipb9E_TBA.css — 200 — 14.7 KiB — 15 ms — h2https://www.panasonic.com/etc/designs/panasonic-global-content-es-es_cache_XXXX.csswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic-global-content-es-es_cache_XXXX.css — 200 — 278 B — 26 ms — h2https://www.panasonic.com/etc/designs/panasonic/eclinkage-libs_cache_3NufnWzi6olSSX9f1a_-jQ.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eclinkage-libs_cache_3NufnWzi6olSSX9f1a_-jQ.js — 200 — 3.8 KiB — 47 ms — h2https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/buymenu-libs/ec-buymenu-libs_cache_hj8t8FRo2JWW4vk7VQLJoQ.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/buymenu-libs/ec-buymenu-libs_cache_hj8t8FRo2JWW4vk7VQLJoQ.js — 200 — 1.0 KiB — 48 ms — h2https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/cart-libs/ec-cart-libs_cache_6vBykj1ANrXIDfdJ7hyrjw.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/cart-libs/ec-cart-libs_cache_6vBykj1ANrXIDfdJ7hyrjw.js — 200 — 781 B — 49 ms — h2https://www.panasonic.com/etc/designs/panasonic/eccart-clientlibs/js/iframeResizer.min_cache_lpgOLWBCIPtkhcsLWq3DvA.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eccart-clientlibs/js/iframeResizer.min_cache_lpgOLWBCIPtkhcsLWq3DvA.js — 200 — 2.7 KiB — 50 ms — h2https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/onlineretailer-libs/ec-onlineretailer-libs_cache_1jAkVkBOt6xeu-ztq4Dp1Q.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eclinkage-clientlibs/js/ext/onlineretailer-libs/ec-onlineretailer-libs_cache_1jAkVkBOt6xeu-ztq4Dp1Q.js — 200 — 757 B — 53 ms — h2https://www.panasonic.com/etc/designs/panasonic/eccart-libs_cache_v0tq8rCHjhqbYUg-I5MpYw.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eccart-libs_cache_v0tq8rCHjhqbYUg-I5MpYw.js — 200 — 5.7 KiB — 55 ms — h2https://www.panasonic.com/etc/designs/panasonic/eccart-libs_cache_B1ED2ruzNyfpDx3KbtAjQA.csswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/eccart-libs_cache_B1ED2ruzNyfpDx3KbtAjQA.css — 200 — 8.4 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h2https://www.panasonic.com/etc/designs/panasonic/wishlist-clientlibs/commonbars_cache_tFsiAbJ538F1RxhJR3W49A.jswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/wishlist-clientlibs/commonbars_cache_tFsiAbJ538F1RxhJR3W49A.js — 200 — 4.0 KiB — 44 ms — h2https://www.panasonic.com/etc/designs/panasonic/holdings/css/holdings-header-footer_cache_AqwoWaKlwZv65hT9RX8fMw.csswww.panasonic.com/etc/designs/panas... https://www.panasonic.com/etc/designs/panasonic/holdings/css/holdings-header-footer_cache_AqwoWaKlwZv65hT9RX8fMw.css — 200 — 5.6 KiB — 30 ms — h2
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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 439ms · 143KB · ¥607/mo
www.panasonic.com
Other
Costly
Execution 168ms
Transfer 17 KB
Monthly Cost ¥232/mo
Unattributable
Other
Costly
Execution 132ms
Transfer 0 KB
Monthly Cost ¥183/mo
cdn-apac.onetrust.com
Other
Costly
Execution 72ms
Transfer 126 KB
Unused 52%
Monthly Cost ¥99/mo
www.panasonic.com
Other
Costly
Execution 67ms
Transfer 0 KB
Unused 73%
Monthly Cost ¥92/mo

These scripts may cost more than they're worth

  • www.panasonic.com adds 168ms and costs ~¥232/month
  • Unattributable adds 132ms and costs ~¥183/month
  • cdn-apac.onetrust.com adds 72ms and costs ~¥99/month
  • www.panasonic.com adds 67ms and costs ~¥92/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.panasonic.com takes 168ms 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 132ms 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-apac.onetrust.com takes 72ms 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 cdn-apac.onetrust.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.panasonic.com takes 67ms 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.panasonic.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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