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https://www.soundcloud.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
74
GRADE
C
FIX
5
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
22
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.

6.95 s

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

9.44 s

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

4.32 s

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

0.133

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

9.68 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.

33.55 s

Page Load Progression

1.1 s
2.1 s
3.2 s
4.3 s
5.3 s
6.4 s
7.4 s
8.5 s
Checks
16
7 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 534 requests
FIX
2.9 MB transferred, 534 requests
Warning::
Page weighs 8.7 MB (2.9 MB transferred)
Warning::
JavaScript is 2.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.0 MB
Info::
Fonts are 223 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 223 KB
Warning::
534 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.61 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
534 requests
0.61 g CO2 per page load
JavaScript 2.0 MiB 70%
Fonts 223.2 KiB 7%
Images 178.7 KiB 6%
Other 161.9 KiB 5%
HTML 149.0 KiB 5%
Other 141.9 KiB 5%
Other 26.6 KiB 1%
CSS 25.0 KiB 1%
Other 1.0 KiB 0%
Other 319 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.9 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
17552ms total JS execution
FIX
17552ms total JS execution
Warning::
https://m.soundcloud.com/: 4079ms CPU time
Warning::
Unattributable: 3360ms CPU time
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 3058ms CPU time
Warning::
https://dn0qt3r0xannq.cloudfront.net/soundcloud-yU...: 1465ms CPU time
Warning::
https://m.sndcdn.com/_next/static/chunks/pages/_ap...: 759ms CPU time
Warning::
Third-party scripts: 17552ms (100% of total)

Main Thread Breakdown

Script Evaluation 52% Other 31% Style & Layout 8% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://m.soundcloud.com/4079ms54ms6ms3rd
Unattributable3360ms667ms0ms3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604060101/pubads_impl.js?cb=310976813058ms2458ms54ms3rd
https://dn0qt3r0xannq.cloudfront.net/soundcloud-yUijW49gH8/soundcloud.com/prebid-wrapper.js1465ms1255ms31ms3rd
https://m.sndcdn.com/_next/static/chunks/pages/_app-c0aa77a30db5046b3bb5.js759ms703ms31ms3rd
https://dwt.soundcloud.com/tags.js690ms626ms12ms3rd
https://c.amazon-adsystem.com/aax2/apstag.js550ms490ms44ms3rd
https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js435ms243ms90ms3rd
https://edge.aditude.io/prebid/9.19.0.js?fork=1&v=d08ffedca58399a64e6a4a841c8af6bd&modules=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
https://cadmus.script.ac/d24657ks8lvxjy/script.js315ms264ms25ms3rd

Showing top 10 of 28 scripts

F
JS Bundles
Action
108 scripts, 701 KB unused
FIX
108 scripts, 701 KB unused
Warning::
https://m.sndcdn.com/_next/static/chunks/41330c7a....: 113 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 87 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://m.sndcdn.com/_next/static/chunks/8c54897ce...: 72 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202603.1...: 67 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://edge.aditude.io/prebid/9.19.0.js?fork=1&v=...: 62 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 701 KB
701 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://m.sndcdn.com/_next/static/chunks/41330c7a.330ecfee66bed5504177.js119 KB113 KB (95%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604060101/pubads_impl.js?cb=31097681183 KB87 KB (47%)✓3rd
https://m.sndcdn.com/_next/static/chunks/8c54897ce4c59728f90778a73ca913843147ff73.51aaec94f997d04fcf14.js75 KB72 KB (97%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js130 KB67 KB (52%)✓3rd
https://edge.aditude.io/prebid/9.19.0.js?fork=1&v=d08ffedca58399a64e6a4a841c8af6bd&modules=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 KB62 KB (35%)✓3rd
https://raven-static.aditude.io/prod/1.19.13-0fnlww/raven.js107 KB61 KB (57%)✓3rd
https://m.sndcdn.com/_next/static/chunks/pages/_app-c0aa77a30db5046b3bb5.js83 KB48 KB (58%)✓3rd
https://m.sndcdn.com/_next/static/chunks/151.e4bc1a6b400c9bff7475.js51 KB40 KB (78%)✓3rd
https://m.sndcdn.com/_next/static/chunks/5b7b5f0ae86a7cdbeb63fbb9e74616dc5bdd9569.3aa6511862c639c91196.js57 KB39 KB (69%)✓3rd
https://dn0qt3r0xannq.cloudfront.net/soundcloud-yUijW49gH8/soundcloud.com/prebid-wrapper.js94 KB39 KB (42%)✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
141 images, 0 KB saveable
REVIEW
141 images, 0 KB saveable
Warning::
https://m.sndcdn.com/_next/static/images/English-2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
141 images 177 KB
0 oversized -0 KB
56 legacy format
1 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (223 KB)
PASS
6 fonts (223 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

223 KB total

Render-blocking

0

of 6

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 7.0 s LCP 9.4 shttps://style.sndcdn.com/fonts/soehne-buch-8cbc277535f3fe5afbb62e9b477ae965.woff2soehne-buch-8cbc277535f... https://style.sndcdn.com/fonts/soehne-buch-8cbc277535f3fe5afbb62e9b477ae965.woff2 — 38.2 KiB — 0 ms — font-display: swaphttps://style.sndcdn.com/fonts/soehne-buch-kursiv-e5962c78732d771ba103a45dc0c86efc.woff2soehne-buch-kursiv-e596... https://style.sndcdn.com/fonts/soehne-buch-kursiv-e5962c78732d771ba103a45dc0c86efc.woff2 — 39.1 KiB — 0 ms — font-display: swaphttps://style.sndcdn.com/fonts/soehne-halbfett-bc1e16fad65be33d561a0a38f55439a0.woff2soehne-halbfett-bc1e16f... https://style.sndcdn.com/fonts/soehne-halbfett-bc1e16fad65be33d561a0a38f55439a0.woff2 — 38.9 KiB — 0 ms — font-display: swaphttps://style.sndcdn.com/fonts/soehne-dreiviertelfett-80ec3782fed8a340275f8312be5dc106.woff2soehne-dreiviertelfett-... https://style.sndcdn.com/fonts/soehne-dreiviertelfett-80ec3782fed8a340275f8312be5dc106.woff2 — 38.9 KiB — 0 ms — font-display: swaphttps://style.sndcdn.com/fonts/soehne-extrafett-bb4276a35507f83f21440b35d790803a.woff2soehne-extrafett-bb4276... https://style.sndcdn.com/fonts/soehne-extrafett-bb4276a35507f83f21440b35d790803a.woff2 — 36.0 KiB — 0 ms — font-display: swaphttps://style.sndcdn.com/fonts/soehne-breit-extrafett-a247758530180c37ca8a613e1d0a8fd7.woff2soehne-breit-extrafett-... https://style.sndcdn.com/fonts/soehne-breit-extrafett-a247758530180c37ca8a613e1d0a8fd7.woff2 — 32.1 KiB — 0 ms — font-display: swap
soehne-buch-8cbc277535f... woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
soehne-buch-kursiv-e596... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
soehne-halbfett-bc1e16f... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
soehne-dreiviertelfett-... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
soehne-extrafett-bb4276... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
soehne-breit-extrafett-... woff2 swap
Size 32 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
20 hints, 0 missing preconnects
PASS
20 hints, 0 missing preconnects
Info::
Page uses 20 resource hint(s)

Current Resource Hints

preconnect
—
preload
5
dns-prefetch
+5
15
prefetch
—

20 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
534 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
100% of JavaScript execution is third-party
First-party Third-party 17552ms · 1384KB · €93/mo
m.soundcloud.com
Other
Costly
Execution 4079ms
Transfer 21 KB
Monthly Cost €22/mo
Unattributable
Other
Costly
Execution 3360ms
Transfer 0 KB
Monthly Cost €18/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 3058ms
Transfer 183 KB
Unused 47%
Monthly Cost €16/mo
dn0qt3r0xannq.cloudfront.net
Other
Costly
Execution 1465ms
Transfer 94 KB
Unused 42%
Monthly Cost €8/mo
m.sndcdn.com
Other
Costly
Execution 759ms
Transfer 83 KB
Unused 58%
Monthly Cost €4/mo
dwt.soundcloud.com
Other
Costly
Execution 690ms
Transfer 43 KB
Monthly Cost €4/mo
c.amazon-adsystem.com
Other
Costly
Execution 550ms
Transfer 90 KB
Unused 42%
Monthly Cost €3/mo
OneTrust
Consent
Essential
Execution 435ms
Transfer 130 KB
Unused 52%
Monthly Cost €2/mo
edge.aditude.io
Other
Costly
Execution 368ms
Transfer 177 KB
Unused 35%
Monthly Cost €2/mo
cadmus.script.ac
Other
Costly
Execution 315ms
Transfer 83 KB
Monthly Cost €2/mo
m.sndcdn.com
Other
Costly
Execution 295ms
Transfer 119 KB
Unused 95%
Monthly Cost €2/mo
dn0qt3r0xannq.cloudfront.net
Other
Costly
Execution 261ms
Transfer 5 KB
Monthly Cost €1/mo
m.sndcdn.com
Other
Costly
Execution 220ms
Transfer 43 KB
Monthly Cost €1/mo
raven-static.aditude.io
Other
Costly
Execution 214ms
Transfer 107 KB
Unused 57%
Monthly Cost €1/mo
script.4dex.io
Other
Optional
Execution 182ms
Transfer 19 KB
Monthly Cost €1/mo
raven-static.aditude.io
Other
Optional
Execution 159ms
Transfer 5 KB
Monthly Cost €1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 135ms
Transfer 34 KB
Monthly Cost €1/mo
m.sndcdn.com
Other
Optional
Execution 130ms
Transfer 15 KB
Monthly Cost €1/mo
m.sndcdn.com
Other
Optional
Execution 130ms
Transfer 5 KB
Monthly Cost €1/mo
static.criteo.net
Other
Optional
Execution 118ms
Transfer 15 KB
Monthly Cost €1/mo
ep2.adtrafficquality.google
Other
Optional
Execution 111ms
Transfer 8 KB
Monthly Cost €1/mo
secure.cdn.fastclick.net
Other
Optional
Execution 91ms
Transfer 22 KB
Monthly Cost €0/mo
dn0qt3r0xannq.cloudfront.net
Other
Optional
Execution 86ms
Transfer 17 KB
Monthly Cost €0/mo
config.aps.amazon-adsystem.com
Other
Optional
Execution 82ms
Transfer 2 KB
Monthly Cost €0/mo
tags.crwdcntrl.net
Other
Optional
Execution 75ms
Transfer 13 KB
Monthly Cost €0/mo
OneTrust
Consent
Essential
Execution 71ms
Transfer 13 KB
Monthly Cost €0/mo
m.sndcdn.com
Other
Optional
Execution 64ms
Transfer 15 KB
Monthly Cost €0/mo
onelinksmartscript.appsflyer.com
Other
Optional
Execution 50ms
Transfer 22 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • m.soundcloud.com adds 4079ms and costs ~€22/month
  • Unattributable adds 3360ms and costs ~€18/month
  • securepubads.g.doubleclick.net adds 3058ms and costs ~€16/month
  • dn0qt3r0xannq.cloudfront.net adds 1465ms and costs ~€8/month
  • m.sndcdn.com adds 759ms and costs ~€4/month
  • dwt.soundcloud.com adds 690ms and costs ~€4/month
  • c.amazon-adsystem.com adds 550ms and costs ~€3/month
  • edge.aditude.io adds 368ms and costs ~€2/month
  • cadmus.script.ac adds 315ms and costs ~€2/month
  • m.sndcdn.com adds 295ms and costs ~€2/month
  • dn0qt3r0xannq.cloudfront.net adds 261ms and costs ~€1/month
  • m.sndcdn.com adds 220ms and costs ~€1/month
  • raven-static.aditude.io adds 214ms and costs ~€1/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

m.soundcloud.com takes 4079ms 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 3360ms 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

securepubads.g.doubleclick.net takes 3058ms 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

dn0qt3r0xannq.cloudfront.net takes 1465ms 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

m.sndcdn.com takes 759ms 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

58% of m.sndcdn.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

dwt.soundcloud.com takes 690ms 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

c.amazon-adsystem.com takes 550ms 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 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

edge.aditude.io takes 368ms 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

cadmus.script.ac takes 315ms 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

m.sndcdn.com takes 295ms 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

95% of m.sndcdn.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

dn0qt3r0xannq.cloudfront.net takes 261ms 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

m.sndcdn.com takes 220ms 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

raven-static.aditude.io takes 214ms 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

57% of raven-static.aditude.io'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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