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https://yamaha.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
77
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
62
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.

1.45 s

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

2.66 s

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

15 ms

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

0.074

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

1.89 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.

2.66 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 3 REVIEW 4 FIX
F
Page Weight Budget
Action
5.6 MB transferred, 82 requests
FIX
5.6 MB transferred, 82 requests
Critical::
Page weighs 7.5 MB (5.6 MB transferred)
Warning::
Images are 4.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.9 MB
Warning::
JavaScript is 685 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 685 KB
Info::
82 HTTP requests
Info::
Estimated 1.2 g CO2 per page load
5.6 MB / 2.4 MB budget
5.6 MB transferred
82 requests
1.2 g CO2 per page load
Images 4.9 MiB 87%
JavaScript 685.0 KiB 12%
CSS 31.7 KiB 1%
Fonts 29.4 KiB 1%
HTML 11.1 KiB 0%
Other 2.3 KiB 0%
Other 1.6 KiB 0%
Other 570 B 0%
Other 226 B 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

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 (5.6 MiB of 5.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
82 resources · 5.6 MB · 230 KB savings available
FIX
82 resources · 5.6 MB · 230 KB savings available
Warning::
Page weight 4.6 MB over 1MB target
Got: 5.6 MB Expected: ≤ 1 MB
Info::
~230 KB of savings available
Warning::
81 third-party resources (100% of weight)
Info::
10 resources over 200KB
82 resources · 5.6 MiB · 81 third-party 4.6 MiB over 1MB target
Image 87% · 4.9 MiB
JavaScript 12% · 685.0 KiB
CSS 1% · 31.7 KiB
Font 1% · 29.4 KiB
Document 0% · 11.6 KiB
Other 0% · 2.7 KiB

~230.3 KiB of savings available

Remove unused JavaScript: 230.3 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.

C
Image Optimization
Action
51 images, 0 KB saveable
REVIEW
51 images, 0 KB saveable
Warning::
https://www.yamaha.com/en/images/main_image_wave01... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/main_image_wave02... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/main_image_wave03... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/bnr_wallpaper.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/stories/images/img_susta... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/stories/environment/sust... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top10.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/bnr_ymc.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/icon_instag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/bnr_milan-design-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/stories/for-our-future/s... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top13.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top17.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/bnr_ymf.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/icon_youtub... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/stories/images/bnr_the-k... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/icon_linked... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/about/experience/images/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top11.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top14.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top16.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/logo_yamaha... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/logo_yamaha... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/tech-design/images/img_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/bnr_way-up.jpg?20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/stories/images/bnr_schoo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top12.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/_common2/images/icon_facebo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top18.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/about/experience/images/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/tech-design/images/img_i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.yamaha.com/en/images/img_top15.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
51 images 4.9 MB
0 oversized -0 KB
51 legacy format
32 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

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

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

B
JS Execution Cost
668ms total JS execution
REVIEW
668ms total JS execution
Info::
Unattributable: 158ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-5HL...: 138ms CPU time
Info::
https://www.yamaha.com/en/: 118ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-KX9...: 67ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-NKSR...: 66ms CPU time
Warning::
Third-party scripts: 668ms (100% of total)

Main Thread Breakdown

Script Evaluation 47% Other 29% Style & Layout 11% Script Parsing & Compilation 8% Rendering 3%
ScriptTotalScriptingParse/CompileParty
Unattributable158ms2ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5HLMR3138ms119ms17ms3rd
https://www.yamaha.com/en/118ms8ms1ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KX9BBBF67ms50ms15ms3rd
https://www.googletagmanager.com/gtag/js?id=G-NKSRP2S1LZ&cx=c&gtm=4e64h166ms54ms11ms3rd
https://www.yamaha.com/_common2/js/lib.js66ms46ms3ms3rd
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU9-FUT5F-HPPTL55ms31ms5ms3rd
C
JS Bundles
Action
9 scripts, 230 KB unused
REVIEW
9 scripts, 230 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KX9...: 74 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-NKSR...: 73 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5HL...: 58 KB unused (31%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU...: 26 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 230 KB
230 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=GTM-KX9BBBF193 KB74 KB (38%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-NKSRP2S1LZ&cx=c&gtm=4e64h1173 KB73 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5HLMR3189 KB58 KB (31%)✓3rd
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU9-FUT5F-HPPTL56 KB26 KB (46%)✓3rd
https://www.yamaha.com/_common2/js/lib.js30 KB—✓3rd
https://www.yamaha.com/_common2/js/common.js4 KB—✓3rd
https://www.yamaha.com/_common2/js/swiper-bundle.min.js37 KB—✓3rd
https://www.yamaha.com/_common2/js/set-height.js1 KB—✓3rd
https://www.yamaha.com/_common2/js/top.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

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
2 fonts (29 KB)
PASS
2 fonts (29 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

29 KB total

Render-blocking

0

of 2

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 2.5 s FCP 1.5 s LCP 2.7 sdata: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 — 52 ms — font-display: swaphttps://fonts.gstatic.com/s/oswald/v57/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2TK3iWkUHHAIjg752GT8Gl-1... https://fonts.gstatic.com/s/oswald/v57/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2 — 27.8 KiB — 32 ms — font-display: swap
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 52 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
TK3iWkUHHAIjg752GT8Gl-1... woff2 swap
Size 28 KB
Load time 32 ms
Start 1.5 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

Network Waterfall
82 requests over 3253ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.5 s LCP 2.7 shttps://yamaha.com// https://yamaha.com/ — 301 — 138 B — 260 ms — h2http://www.yamaha.com/www.yamaha.com/ http://www.yamaha.com/ — 307 — 0 B — 2 ms — http/1.1https://www.yamaha.com/www.yamaha.com/ https://www.yamaha.com/ — 302 — 404 B — 737 ms — h2https://www.yamaha.com/en/www.yamaha.com/en/ https://www.yamaha.com/en/ — 200 — 11.1 KiB — 262 ms — h2https://www.yamaha.com/_common2/css/en/fonts.csswww.yamaha.com/_common2/css/en/font... https://www.yamaha.com/_common2/css/en/fonts.css — 200 — 1000 B — 27 ms — h2https://www.yamaha.com/_common2/css/navigation.csswww.yamaha.com/_common2/css/navigat... https://www.yamaha.com/_common2/css/navigation.css — 200 — 7.9 KiB — 45 ms — h2https://www.yamaha.com/_common2/css/common.csswww.yamaha.com/_common2/css/common.... https://www.yamaha.com/_common2/css/common.css — 200 — 15.9 KiB — 31 ms — h2https://www.yamaha.com/_common2/css/swiper-bundle.min.csswww.yamaha.com/_common2/css/swiper-... https://www.yamaha.com/_common2/css/swiper-bundle.min.css — 200 — 4.4 KiB — 29 ms — h2https://www.yamaha.com/_common2/js/lib.jswww.yamaha.com/_common2/js/lib.js https://www.yamaha.com/_common2/js/lib.js — 200 — 30.0 KiB — 34 ms — h2https://www.yamaha.com/_common2/js/common.jswww.yamaha.com/_common2/js/common.j... https://www.yamaha.com/_common2/js/common.js — 200 — 4.4 KiB — 33 ms — h2https://www.yamaha.com/_common2/js/swiper-bundle.min.jswww.yamaha.com/_common2/js/swiper-b... https://www.yamaha.com/_common2/js/swiper-bundle.min.js — 200 — 37.1 KiB — 52 ms — h2https://www.yamaha.com/_common2/js/set-height.jswww.yamaha.com/_common2/js/set-heig... https://www.yamaha.com/_common2/js/set-height.js — 200 — 697 B — 58 ms — h2https://www.yamaha.com/_common2/css/top.csswww.yamaha.com/_common2/css/top.css https://www.yamaha.com/_common2/css/top.css — 200 — 747 B — 44 ms — h2https://www.yamaha.com/_common2/js/top.jswww.yamaha.com/_common2/js/top.js https://www.yamaha.com/_common2/js/top.js — 200 — 569 B — 54 ms — h2https://www.yamaha.com/_common2/images/logo_yamaha_waves.svgwww.yamaha.com/_common2/images/logo... https://www.yamaha.com/_common2/images/logo_yamaha_waves.svg — 200 — 3.9 KiB — 47 ms — h2https://www.yamaha.com/en/about/experience/images/img_music-connect.jpgwww.yamaha.com/en/about/experience/... https://www.yamaha.com/en/about/experience/images/img_music-connect.jpg — 200 — 298.0 KiB — 55 ms — h2https://fonts.googleapis.com/css?family=Oswald:400,500,700,300&subset=latin,latin-extfonts.googleapis.com/css?family=Osw... https://fonts.googleapis.com/css?family=Oswald:400,500,700,300&subset=latin,latin-ext — 200 — 1.1 KiB — 93 ms — h2https://www.yamaha.com/en/about/experience/images/img_vir.jpgwww.yamaha.com/en/about/experience/... https://www.yamaha.com/en/about/experience/images/img_vir.jpg — 200 — 117.9 KiB — 40 ms — h2https://www.yamaha.com/en/tech-design/images/img_technologies.jpgwww.yamaha.com/en/tech-design/image... 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h2https://www.google.com/ccm/collect?rcb=5&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fwww.yamaha.com%2Fen%2F&scrsrc=www.googletagmanager.com&rnd=2146069249.1776808221&dt=Corporate%20Site%20-%20Yamaha%20Corporation&auid=1429134097.1776808221&navt=n&npa=1&ep.ads_data_redaction=0&gtm=45He64h1v6198543za200zd6198543xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115616985~115938466~115938468~117266400&apve=1&apvf=f&apvc=1&tft=1776808221393&tfd=1810www.google.com/ccm/collect?rcb=5&fr... https://www.google.com/ccm/collect?rcb=5&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fwww.yamaha.com%2Fen%2F&scrsrc=www.googletagmanager.com&rnd=2146069249.1776808221&dt=Corporate%20Site%20-%20Yamaha%20Corporation&auid=1429134097.1776808221&navt=n&npa=1&ep.ads_data_redaction=0&gtm=45He64h1v6198543za200zd6198543xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115616985~115938466~115938468~117266400&apve=1&apvf=f&apvc=1&tft=1776808221393&tfd=1810 — 200 — 21 B — 80 ms — h3https://region1.google-analytics.com/g/collect?v=2&tid=G-NKSRP2S1LZ&gtm=45je64h1v874267645z86198543za20gzb6198543zd6198543&_p=1776808221051&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1199055137.1776808222&frm=0&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401~117384405&sid=1776808221&sct=1&seg=0&dl=https%3A%2F%2Fwww.yamaha.com%2Fen%2F&dt=Corporate%20Site%20-%20Yamaha%20Corporation&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=1958region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-NKSRP2S1LZ&gtm=45je64h1v874267645z86198543za20gzb6198543zd6198543&_p=1776808221051&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1199055137.1776808222&frm=0&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401~117384405&sid=1776808221&sct=1&seg=0&dl=https%3A%2F%2Fwww.yamaha.com%2Fen%2F&dt=Corporate%20Site%20-%20Yamaha%20Corporation&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=1958 — 204 — 549 B — 66 ms — h2https://www.yamaha.com/_common/images/favicon.icowww.yamaha.com/_common/images/favic... https://www.yamaha.com/_common/images/favicon.ico — 200 — 1.2 KiB — 14 ms — h2https://trial-eum-clientnsv4-s.akamaihd.net/eum/getdns.txt?c=ps3agfpgrtrial-eum-clientnsv4-s.akamaihd.net... https://trial-eum-clientnsv4-s.akamaihd.net/eum/getdns.txt?c=ps3agfpgr — 302 — 266 B — 51 ms — http/1.1https://trial-eum-clienttons-s.akamaihd.net/eum/getdns.txt?c=ps3agfpgrtrial-eum-clienttons-s.akamaihd.net... https://trial-eum-clienttons-s.akamaihd.net/eum/getdns.txt?c=ps3agfpgr — 302 — 278 B — 41 ms — http/1.1https://eaauduflaaaaakqce3ychaaaanu6p4i6-ps3agf-e7f13c455-clienttons-s.akamaihd.net/eum/results.txteaauduflaaaaakqce3ychaaaanu6p4i6-ps... https://eaauduflaaaaakqce3ychaaaanu6p4i6-ps3agf-e7f13c455-clienttons-s.akamaihd.net/eum/results.txt — 200 — 312 B — 61 ms — http/1.1https://rxr3zxaccrd6u2ph6epa-ps3agf-d6fd85bc0-clientnsv4-s.akamaihd.net/eum/results.txtrxr3zxaccrd6u2ph6epa-ps3agf-d6fd85b... https://rxr3zxaccrd6u2ph6epa-ps3agf-d6fd85bc0-clientnsv4-s.akamaihd.net/eum/results.txt — 200 — 312 B — 56 ms — http/1.1https://684dd32f.akstat.io/684dd32f.akstat.io/ https://684dd32f.akstat.io/ — 204 — 226 B — 388 ms — h2
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 668ms · 653KB · €7/mo
Unattributable
Other
Optional
Execution 158ms
Transfer 0 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 138ms
Transfer 189 KB
Unused 31%
Monthly Cost €2/mo
www.yamaha.com
Other
Optional
Execution 118ms
Transfer 11 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 67ms
Transfer 193 KB
Unused 38%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 66ms
Transfer 173 KB
Unused 42%
Monthly Cost €1/mo
www.yamaha.com
Other
Optional
Execution 66ms
Transfer 30 KB
Monthly Cost €1/mo
s.go-mpulse.net
Other
Optional
Execution 55ms
Transfer 56 KB
Unused 46%
Monthly Cost €1/mo

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

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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