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https://yamaha.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
46
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
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.

3.44 s

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

8.96 s

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

790 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.

5.06 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.

10.63 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
17
8 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
5.4 MB transferred, 73 requests
FIX
5.4 MB transferred, 73 requests
Critical::
Page weighs 7.3 MB (5.4 MB transferred)
Warning::
Images are 4.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.6 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::
73 HTTP requests
Info::
Estimated 1.1 g CO2 per page load
5.4 MB / 2.4 MB budget
5.4 MB transferred
73 requests
1.1 g CO2 per page load
Images 4.6 MiB 86%
JavaScript 685.5 KiB 12%
CSS 31.8 KiB 1%
Fonts 29.4 KiB 1%
HTML 11.1 KiB 0%
Other 1.8 KiB 0%
Other 949 B 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 (5.4 MiB of 5.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2914ms total JS execution
FIX
2914ms total JS execution
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KX9...: 592ms CPU time
Warning::
Unattributable: 520ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5HL...: 424ms CPU time
Warning::
https://www.yamaha.com/en/: 423ms CPU time
Warning::
https://www.yamaha.com/_common2/js/lib.js: 376ms CPU time
Warning::
Third-party scripts: 2914ms (100% of total)

Main Thread Breakdown

Script Evaluation 52% Other 23% Style & Layout 10% Script Parsing & Compilation 8% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtm.js?id=GTM-KX9BBBF592ms466ms85ms3rd
Unattributable520ms7ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5HLMR3424ms351ms66ms3rd
https://www.yamaha.com/en/423ms30ms4ms3rd
https://www.yamaha.com/_common2/js/lib.js376ms255ms7ms3rd
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU9-FUT5F-HPPTL300ms184ms16ms3rd
https://www.googletagmanager.com/gtag/js?id=G-NKSRP2S1LZ&cx=c&gtm=4e64h1279ms224ms54ms3rd
D
Page Weight Inventory
Action
73 resources · 5.4 MB · 231 KB savings available
FIX
73 resources · 5.4 MB · 231 KB savings available
Warning::
Page weight 4.4 MB over 1MB target
Got: 5.4 MB Expected: ≤ 1 MB
Info::
~231 KB of savings available
Warning::
72 third-party resources (100% of weight)
Info::
9 resources over 200KB
73 resources · 5.4 MiB · 72 third-party 4.4 MiB over 1MB target
Image 86% · 4.6 MiB
JavaScript 12% · 685.5 KiB
CSS 1% · 31.8 KiB
Font 1% · 29.4 KiB
Document 0% · 11.6 KiB
Other 0% · 1.5 KiB

~231.1 KiB of savings available

Remove unused JavaScript: 231.1 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
46 images, 0 KB saveable
REVIEW
46 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/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/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/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/icon_linked... 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/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/img_top17.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/_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/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_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/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_instag... 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/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_top15.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/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_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/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_top18.jpg 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_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/environment/sust... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
46 images 4.6 MB
0 oversized -0 KB
46 legacy format
27 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

C
JS Bundles
Action
9 scripts, 231 KB unused
REVIEW
9 scripts, 231 KB unused
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-KX9...: 72 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5HL...: 60 KB unused (32%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU...: 26 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 231 KB
231 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-NKSRP2S1LZ&cx=c&gtm=4e64h1174 KB73 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KX9BBBF194 KB72 KB (37%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5HLMR3189 KB60 KB (32%)✓3rd
https://s.go-mpulse.net/boomerang/JFXMF-KQXEG-XSHU9-FUT5F-HPPTL57 KB26 KB (47%)✓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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 3.4 s LCP 9.0 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 — 45 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 — 33 ms — font-display: swap
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 45 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 33 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+
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
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
73 requests over 3678ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 3.4 s LCP 9.0 shttps://yamaha.com// https://yamaha.com/ — 301 — 138 B — 258 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 — 403 B — 712 ms — h2https://www.yamaha.com/en/www.yamaha.com/en/ https://www.yamaha.com/en/ — 200 — 11.1 KiB — 253 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 — 1.0 KiB — 78 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 — 43 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 — 48 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 — 62 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 — 53 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 — 47 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 — 36 ms — h2https://www.yamaha.com/_common2/css/top.csswww.yamaha.com/_common2/css/top.css https://www.yamaha.com/_common2/css/top.css — 200 — 746 B — 51 ms — h2https://www.yamaha.com/_common2/js/top.jswww.yamaha.com/_common2/js/top.js https://www.yamaha.com/_common2/js/top.js — 200 — 592 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 — 37 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 — 54 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 — 22 ms — h2https://www.yamaha.com/en/tech-design/images/img_technologies.jpgwww.yamaha.com/en/tech-design/image... https://www.yamaha.com/en/tech-design/images/img_technologies.jpg — 200 — 175.8 KiB — 39 ms — h2https://www.yamaha.com/en/tech-design/images/img_insights.jpgwww.yamaha.com/en/tech-design/image... https://www.yamaha.com/en/tech-design/images/img_insights.jpg — 200 — 109.6 KiB — 27 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 — 80 ms — h2https://www.yamaha.com/en/stories/images/img_sustainability-stories.jpgwww.yamaha.com/en/stories/images/im... https://www.yamaha.com/en/stories/images/img_sustainability-stories.jpg — 200 — 193.7 KiB — 21 ms — h2https://www.yamaha.com/en/images/main_image_wave01_sp.jpgwww.yamaha.com/en/images/main_image... https://www.yamaha.com/en/images/main_image_wave01_sp.jpg — 200 — 182.0 KiB — 161 ms — h2https://www.yamaha.com/en/images/main_image_wave02_sp.jpgwww.yamaha.com/en/images/main_image... https://www.yamaha.com/en/images/main_image_wave02_sp.jpg — 200 — 233.3 KiB 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https://region1.google-analytics.com/g/collect?v=2&tid=G-NKSRP2S1LZ&gtm=45je64h1v874267645z86198543za20gzb6198543zd6198543&_p=1776808200793&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=886420693.1776808201&frm=0&pscdl=noapi&rcb=17&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938469~117266400~118463261&sid=1776808201&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=1985 — 204 — 549 B — 89 ms — h2https://www.yamaha.com/_common/images/favicon.icowww.yamaha.com/_common/images/favic... https://www.yamaha.com/_common/images/favicon.ico — 200 — 1.3 KiB — 18 ms — h2https://684dd327.akstat.io/684dd327.akstat.io/ https://684dd327.akstat.io/ — 204 — 226 B — 283 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 2914ms · 654KB · €32/mo
Google Tag Manager
Tag Manager
Costly
Execution 592ms
Transfer 194 KB
Unused 37%
Monthly Cost €6/mo
Unattributable
Other
Costly
Execution 520ms
Transfer 0 KB
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 424ms
Transfer 189 KB
Unused 32%
Monthly Cost €5/mo
www.yamaha.com
Other
Costly
Execution 423ms
Transfer 11 KB
Monthly Cost €5/mo
www.yamaha.com
Other
Costly
Execution 376ms
Transfer 30 KB
Monthly Cost €4/mo
s.go-mpulse.net
Other
Costly
Execution 300ms
Transfer 57 KB
Unused 47%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 279ms
Transfer 174 KB
Unused 42%
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 592ms and costs ~€6/month
  • Unattributable adds 520ms and costs ~€6/month
  • Google Tag Manager adds 424ms and costs ~€5/month
  • www.yamaha.com adds 423ms and costs ~€5/month
  • www.yamaha.com adds 376ms and costs ~€4/month
  • s.go-mpulse.net adds 300ms and costs ~€3/month
  • Google Tag Manager adds 279ms 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

Google Tag Manager takes 592ms 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 520ms 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 424ms 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.yamaha.com takes 423ms 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.yamaha.com takes 376ms 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

s.go-mpulse.net takes 300ms 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 279ms 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

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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