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https://www.sonymusic.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
69
GRADE
D
FIX
3
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
88
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.
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.

630 ms

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

2.24 s

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

25 ms

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

0.038

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

1.30 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.

2.25 s

Page Load Progression

582 ms
1.2 s
1.7 s
2.3 s
2.9 s
3.5 s
4.1 s
4.7 s
Checks
14
6 PASS 3 REVIEW 3 FIX
F
Page Weight Budget
Action
5.2 MB transferred, 104 requests
FIX
5.2 MB transferred, 104 requests
Critical::
Page weighs 8.2 MB (5.2 MB transferred)
Warning::
Images are 4.4 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.4 MB
Warning::
104 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.1 g CO2 per page load
5.2 MB / 2.4 MB budget
5.2 MB transferred
104 requests
1.1 g CO2 per page load
Images 4.4 MiB 86%
JavaScript 452.3 KiB 9%
Fonts 121.2 KiB 2%
CSS 65.9 KiB 1%
Other 42.8 KiB 1%
HTML 40.3 KiB 1%
Other 26.1 KiB 0%
Other 3.8 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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
95% third-party, 0 ms blocking
FIX
95% third-party, 0 ms blocking
Warning::
Third-party code accounts for 95% of page weight (4.9 MiB of 5.2 MiB)
Info::
Third-party blocking time is low (0 ms)
95%
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.

C
Image Optimization
Action
56 images, 0 KB saveable
REVIEW
56 images, 0 KB saveable
Warning::
https://cdn-p.smehost.net/sites/6dc1d53d1d7f4d7fac... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-p.smehost.net/sites/6dc1d53d1d7f4d7fac... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-p.smehost.net/sites/dc6404ad5e4d4d8395... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
56 images 4.4 MB
0 oversized -0 KB
56 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Execution Cost
Action
1515ms total JS execution
REVIEW
1515ms total JS execution
Warning::
https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5...: 453ms CPU time
Warning::
https://www.sonymusic.com/: 410ms CPU time
Info::
Unattributable: 194ms CPU time
Info::
https://cdn.cookielaw.org/scripttemplates/202601.1...: 93ms CPU time
Info::
https://www.sonymusic.com/wp-content/themes/sonymu...: 81ms CPU time
Warning::
Third-party scripts: 878ms (58% of total)

Main Thread Breakdown

Script Evaluation 45% Other 24% Style & Layout 15% Rendering 8% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.11.0/lottie.min.js453ms201ms10ms3rd
https://www.sonymusic.com/410ms116ms8ms1st
Unattributable194ms26ms0ms3rd
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js93ms61ms17ms3rd
https://www.sonymusic.com/wp-content/themes/sonymusic/js/scripts.js?ver=6.081ms68ms1ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-MSD5PN79ms59ms14ms3rd
https://www.sonymusic.com/cdn-cgi/challenge-platform/scripts/jsd/main.js78ms74ms1ms1st
https://www.sonymusic.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.169ms22ms3ms1st
https://js-agent.newrelic.com/nr-spa-1.312.1.min.js59ms48ms3ms3rd
C
JS Bundles
Action
17 scripts, 174 KB unused
REVIEW
17 scripts, 174 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MSD...: 68 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202601.1...: 66 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5...: 40 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 174 KB
174 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=GTM-MSD5PN133 KB68 KB (51%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js127 KB66 KB (52%)✓3rd
https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.11.0/lottie.min.js61 KB40 KB (66%)✓3rd
blob:https://www.sonymusic.com/ef73826a-32d0-4950-8413-4ad11e794661-0 KB—✓3rd
https://www.sonymusic.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.15 KB—✓1st
https://www.sonymusic.com/wp-content/themes/sonymusic/js/jquery.fitvids.js?ver=1.01 KB—✓1st
https://www.sonymusic.com/wp-content/themes/sonymusic/js/plugins.js?ver=5.018 KB—✓1st
https://www.sonymusic.com/wp-content/themes/sonymusic/js/scripts.js?ver=6.03 KB—✓1st
https://www.sonymusic.com/wp-content/plugins/mp3-music-player-by-sonaar/public/js/perfect-scrollbar.min.js?ver=5.116 KB—✓1st
https://www.sonymusic.com/wp-includes/js/wp-emoji-release.min.js?ver=07eadade92d9169336660068d2d489ab5 KB—✓1st

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
4 fonts (121 KB)
PASS
4 fonts (121 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

121 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 630 ms LCP 2.2 shttps://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Roman.woff2BasicCommercialLTStd-Ro... https://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Roman.woff2 — 15.4 KiB — 0 ms — font-display: swaphttps://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Blk.woff2BasicCommercialLTStd-Bl... https://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Blk.woff2 — 15.2 KiB — 0 ms — font-display: swaphttps://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Bold.woff2BasicCommercialLTStd-Bo... https://www.sonymusic.com/wp-content/themes/sonymusic/font/BasicCommercialLTStd-Bold.woff2 — 15.0 KiB — 0 ms — font-display: swaphttps://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/webfonts/fa-brands-400.woff2 — 75.6 KiB — 0 ms — font-display: swap
BasicCommercialLTStd-Ro... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BasicCommercialLTStd-Bl... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
BasicCommercialLTStd-Bo... woff2 swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 76 KB
Load time 0 ms
Start 0 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
104 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
58% of JavaScript execution is third-party
First-party Third-party 878ms · 352KB · $12/mo
cdnjs
CDN
Costly
Execution 453ms
Transfer 61 KB
Unused 66%
Monthly Cost $6/mo
Unattributable
Other
Optional
Execution 194ms
Transfer 0 KB
Monthly Cost $3/mo
OneTrust
Consent
Essential
Execution 93ms
Transfer 127 KB
Unused 52%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 79ms
Transfer 133 KB
Unused 51%
Monthly Cost $1/mo
js-agent.newrelic.com
Other
Optional
Execution 59ms
Transfer 30 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • cdnjs adds 453ms and costs ~$6/month

58% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

cdnjs takes 453ms 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

66% of cdnjs'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

52% of OneTrust'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

51% 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

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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