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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
4
PASS
9
INFO
2

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

Mobile Desktop
70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

2.08 s

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

16.65 s

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

204 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.

2.71 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.

17.27 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
9 PASS 4 REVIEW 2 FIX
F
Page Weight Budget
Action
3.3 MB transferred, 83 requests
FIX
3.3 MB transferred, 83 requests
Warning::
Page weighs 4.9 MB (3.3 MB transferred)
Warning::
Images are 2.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.2 MB
Info::
Fonts are 506 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 506 KB
Warning::
JavaScript is 502 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 502 KB
Info::
83 HTTP requests
Info::
Estimated 0.69 g CO2 per page load
3.3 MB / 2.4 MB budget
3.3 MB transferred
83 requests
0.69 g CO2 per page load
Images 2.2 MiB 67%
Fonts 506.3 KiB 15%
JavaScript 502.0 KiB 15%
Other 50.4 KiB 1%
Other 41.9 KiB 1%
HTML 10.5 KiB 0%
CSS 7.7 KiB 0%
Other 2.7 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

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

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
JS Bundles
Action
21 scripts, 362 KB unused
FIX
21 scripts, 362 KB unused
Warning::
https://supercell.com/_next/static/chunks/main-af6...: 181 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202401.2...: 66 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://supercell.com/_next/static/chunks/805-82b1...: 57 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://supercell.com/_next/static/chunks/805-82b1...: 57 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 362 KB
362 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://supercell.com/_next/static/chunks/main-af617b05f1660d1b.js322 KB181 KB (56%)✓1st
https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js104 KB66 KB (64%)✓3rd
https://supercell.com/_next/static/chunks/805-82b11073755d6082.js0 KB57 KB (64%)✓1st
https://supercell.com/_next/static/chunks/805-82b11073755d6082.js24 KB57 KB (64%)✓1st
https://supercell.com/_next/static/chunks/pages/en-973f13bc4c35780e.js1 KB—✓1st
https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js44 KB—✓1st
https://supercell.com/_next/static/chunks/3200-2a72fe3c5992293e.js4 KB—✓1st
https://supercell.com/_next/static/chunks/pages/index-7a5b1df7573fb543.js1 KB—✓1st
https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_buildManifest.js3 KB—✓1st
https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_ssgManifest.js1 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

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
Image Optimization
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Info::
All images are well-optimized
37 images 2.2 MB
0 oversized -0 KB
37 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1780ms total JS execution
REVIEW
1780ms total JS execution
Warning::
Unattributable: 550ms CPU time
Warning::
https://supercell.com/_next/static/chunks/main-af6...: 453ms CPU time
Warning::
https://supercell.com/_next/static/chunks/framewor...: 371ms CPU time
Warning::
https://supercell.com/: 338ms CPU time
Info::
https://cdn.cookielaw.org/scripttemplates/202401.2...: 69ms CPU time
Info::
Third-party scripts: 620ms (35% of total)

Main Thread Breakdown

Script Evaluation 47% Other 27% Style & Layout 15% Script Parsing & Compilation 9%
ScriptTotalScriptingParse/CompileParty
Unattributable550ms94ms0ms3rd
https://supercell.com/_next/static/chunks/main-af617b05f1660d1b.js453ms319ms117ms1st
https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js371ms339ms15ms1st
https://supercell.com/338ms24ms1ms1st
https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js69ms37ms32ms3rd
C
Page Weight Inventory
Action
83 resources · 3.3 MB · 362 KB savings available
REVIEW
83 resources · 3.3 MB · 362 KB savings available
Warning::
Page weight 2.3 MB over 1MB target
Got: 3.3 MB Expected: ≤ 1 MB
Info::
~362 KB of savings available
Info::
13 third-party resources (5% of weight)
Info::
1 resources over 200KB
83 resources · 3.3 MiB · 13 third-party 2.3 MiB over 1MB target
Image 67% · 2.2 MiB
JavaScript 16% · 536.3 KiB
Font 15% · 506.3 KiB
Other 1% · 43.1 KiB
CSS 1% · 17.8 KiB
Document 0% · 10.5 KiB

~362.2 KiB of savings available

Remove unused JavaScript: 362.2 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
5% third-party, 0 ms blocking
PASS
5% third-party, 0 ms blocking
Info::
Third-party code accounts for 5% of page weight (153.9 KiB of 3.3 MiB)
Info::
Third-party blocking time is low (0 ms)
95%
First-party Third-party
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 (506 KB)
PASS
4 fonts (506 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

506 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 2.1 s LCP 16.6 shttps://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2supercellheadline-heavy... https://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2 — 18.7 KiB — 79 ms — font-display: swaphttps://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2supercelltext_w_rg.2d4d... https://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2 — 161.4 KiB — 227 ms — font-display: swaphttps://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2supercelltext_w_md.01ac... https://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2 — 165.7 KiB — 229 ms — font-display: swaphttps://supercell.com/_next/static/media/supercelltext_w_bd.8c3b5392.woff2supercelltext_w_bd.8c3b... https://supercell.com/_next/static/media/supercelltext_w_bd.8c3b5392.woff2 — 160.5 KiB — 26 ms — font-display: swap
supercellheadline-heavy... woff2 swap
Size 19 KB
Load time 79 ms
Start 74 ms
Risk FOUT — text flashes from fallback to web font
supercelltext_w_rg.2d4d... woff2 swap
Size 161 KB
Load time 227 ms
Start 75 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
supercelltext_w_md.01ac... woff2 swap
Size 166 KB
Load time 229 ms
Start 75 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
supercelltext_w_bd.8c3b... woff2 swap
Size 161 KB
Load time 26 ms
Start 334 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~244 KB and ~488 ms

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
5 hints, 0 missing preconnects
PASS
5 hints, 0 missing preconnects
Info::
Page uses 5 resource hint(s)

Current Resource Hints

preconnect
—
preload
5
dns-prefetch
—
prefetch
—

5 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
A+
HTTP Caching
max-age=60 (1 minute)
PASS
max-age=60 (1 minute)
Info::
Cache-Control header is set
Got: public,max-age=60
Info::
Effective TTL: 1 minute (max-age=60)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

public,max-age=60

DirectiveValueMeaning
public—Any cache may store this response
max-age60Cache for 1 minute
Effective TTL: 60 seconds
Network Waterfall
83 requests over 1388ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 2.1 s LCP 16.6 shttps://supercell.com// https://supercell.com/ — 200 — 10.5 KiB — 62 ms — http/1.1https://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2/_next/static/media/supercellheadli... https://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2 — 200 — 18.7 KiB — 79 ms — h3https://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2/_next/static/media/supercelltext_w... https://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2 — 200 — 161.4 KiB — 227 ms — h3https://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2/_next/static/media/supercelltext_w... https://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2 — 200 — 165.7 KiB — 229 ms — h3https://supercell.com/_next/static/css/2b1f271824a0b43a.css/_next/static/css/2b1f271824a0b43a.... https://supercell.com/_next/static/css/2b1f271824a0b43a.css — 200 — 3.6 KiB — 59 ms — h3https://supercell.com/_next/static/css/52575853b1a92292.css/_next/static/css/52575853b1a92292.... https://supercell.com/_next/static/css/52575853b1a92292.css — 200 — 4.1 KiB — 64 ms — h3https://supercell.com/_next/static/media/supercell_logo.50e3c1ff.webp/_next/static/media/supercell_logo.... https://supercell.com/_next/static/media/supercell_logo.50e3c1ff.webp — 200 — 1.4 KiB — 100 ms — h3https://supercell.com/_next/static/media/btn_mobile_menu.4597c82b.webp/_next/static/media/btn_mobile_menu... https://supercell.com/_next/static/media/btn_mobile_menu.4597c82b.webp — 200 — 828 B — 67 ms — h3https://supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.webp/_next/static/media/frontpage_hero_... https://supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.webp — 200 — 71.7 KiB — 168 ms — h3https://supercell.com/_next/static/media/frontpage_hero.8bc64969.webp/_next/static/media/frontpage_hero.... https://supercell.com/_next/static/media/frontpage_hero.8bc64969.webp — 200 — 107.3 KiB — 204 ms — h3https://supercell.com/images/8bb77883320f0956fcc5e2b0aa91e2ad/790/Boom_Beach_PC_Launch_Announcement_A_1500x1130.webp/images/8bb77883320f0956fcc5e2b0aa9... https://supercell.com/images/8bb77883320f0956fcc5e2b0aa91e2ad/790/Boom_Beach_PC_Launch_Announcement_A_1500x1130.webp — 200 — 100.0 KiB — 203 ms — h3https://accounts.supercell.com/sdk/sdk.jsaccounts.supercell.com/sdk/sdk.js https://accounts.supercell.com/sdk/sdk.js — 200 — 2.9 KiB — 131 ms — h2https://supercell.com/_next/static/chunks/webpack-6cf6c52625633ab2.js/_next/static/chunks/webpack-6cf6c5... https://supercell.com/_next/static/chunks/webpack-6cf6c52625633ab2.js — 200 — 2.5 KiB — 66 ms — h3https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js/_next/static/chunks/framework-6c92... https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js — 200 — 44.5 KiB — 150 ms — h3https://supercell.com/_next/static/chunks/main-af617b05f1660d1b.js/_next/static/chunks/main-af617b05f... https://supercell.com/_next/static/chunks/main-af617b05f1660d1b.js — 200 — 322.5 KiB — 227 ms — h3https://supercell.com/_next/static/chunks/pages/_app-27f83cb04d7a513b.js/_next/static/chunks/pages/_app-27f... https://supercell.com/_next/static/chunks/pages/_app-27f83cb04d7a513b.js — 200 — 1.3 KiB — 71 ms — h3https://supercell.com/_next/static/chunks/5624-f9a050adc0a79182.js/_next/static/chunks/5624-f9a050adc... https://supercell.com/_next/static/chunks/5624-f9a050adc0a79182.js — 200 — 5.0 KiB — 90 ms — h3https://supercell.com/_next/static/chunks/3200-2a72fe3c5992293e.js/_next/static/chunks/3200-2a72fe3c5... https://supercell.com/_next/static/chunks/3200-2a72fe3c5992293e.js — 200 — 3.9 KiB — 109 ms — h3https://supercell.com/_next/static/chunks/pages/index-7a5b1df7573fb543.js/_next/static/chunks/pages/index-7a... https://supercell.com/_next/static/chunks/pages/index-7a5b1df7573fb543.js — 200 — 886 B — 70 ms — h3https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_buildManifest.js/_next/static/06825b2dd9224dd29d2a8... https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_buildManifest.js — 200 — 3.2 KiB — 110 ms — h3https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_ssgManifest.js/_next/static/06825b2dd9224dd29d2a8... https://supercell.com/_next/static/06825b2dd9224dd29d2a84c3b00ac0b1bf166d3b/_ssgManifest.js — 200 — 845 B — 101 ms — h3https://supercell.com/_next/static/media/supercell_creators_grey.f699541d.svg/_next/static/media/supercell_creat... https://supercell.com/_next/static/media/supercell_creators_grey.f699541d.svg — 200 — 5.5 KiB — 112 ms — h3https://supercell.com/_next/static/media/supercell_make_grey.964b2d8d.svg/_next/static/media/supercell_make_... https://supercell.com/_next/static/media/supercell_make_grey.964b2d8d.svg — 200 — 6.4 KiB — 110 ms — h3https://supercell.com/_next/static/media/supercell_id_grey.62affa0b.svg/_next/static/media/supercell_id_gr... https://supercell.com/_next/static/media/supercell_id_grey.62affa0b.svg — 200 — 5.5 KiB — 110 ms — h3https://supercell.com/images/a3ac74eb27c3da587c9576bb2a771d21/790/ilkkasBlogPost_hero_thumbnail_2026.webp/images/a3ac74eb27c3da587c9576bb2a7... https://supercell.com/images/a3ac74eb27c3da587c9576bb2a771d21/790/ilkkasBlogPost_hero_thumbnail_2026.webp — 200 — 70.8 KiB — 165 ms — h3https://supercell.com/images/1885de2a28dc176e143693130aeeb0eb/790/failosophy-web-cover-1__1_.webp/images/1885de2a28dc176e143693130ae... https://supercell.com/images/1885de2a28dc176e143693130aeeb0eb/790/failosophy-web-cover-1__1_.webp — 200 — 104.1 KiB — 200 ms — h3https://supercell.com/images/ad5a77db0d6e3cabc68fb0d2fca9eed6/790/Hay-Day_Neighborhood-Event_02871_1500x1130.webp/images/ad5a77db0d6e3cabc68fb0d2fca... https://supercell.com/images/ad5a77db0d6e3cabc68fb0d2fca9eed6/790/Hay-Day_Neighborhood-Event_02871_1500x1130.webp — 200 — 88.7 KiB — 181 ms — h3https://supercell.com/images/db7bf889a9b6fad05cc2d896d49476a6/790/store-thumbnail.webp/images/db7bf889a9b6fad05cc2d896d49... https://supercell.com/images/db7bf889a9b6fad05cc2d896d49476a6/790/store-thumbnail.webp — 200 — 10.5 KiB — 112 ms — h3https://supercell.com/images/4a0cdf1068282d0125c18813b7fb1f60/790/20251130_Adam-Lakomy_Brawl-Stars-WF_14467.webp/images/4a0cdf1068282d0125c18813b7f... https://supercell.com/images/4a0cdf1068282d0125c18813b7fb1f60/790/20251130_Adam-Lakomy_Brawl-Stars-WF_14467.webp — 200 — 174.5 KiB — 218 ms — h3https://supercell.com/images/f78b607faf3e016e1c7c0edc5ecb6b3b/790/Squad_news_-_30.10_-_1.webp/images/f78b607faf3e016e1c7c0edc5ec... https://supercell.com/images/f78b607faf3e016e1c7c0edc5ecb6b3b/790/Squad_news_-_30.10_-_1.webp — 200 — 91.7 KiB — 183 ms — h3
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 2.1 s LCP 16.6 shttps://supercell.com// https://supercell.com/ — 200 — 10.5 KiB — 62 ms — http/1.1https://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2/_next/static/media/supercellheadli... https://supercell.com/_next/static/media/supercellheadline-heavy.ae61f14f.woff2 — 200 — 18.7 KiB — 79 ms — h3https://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2/_next/static/media/supercelltext_w... https://supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2 — 200 — 161.4 KiB — 227 ms — h3https://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2/_next/static/media/supercelltext_w... https://supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2 — 200 — 165.7 KiB — 229 ms — h3https://supercell.com/_next/static/css/2b1f271824a0b43a.css/_next/static/css/2b1f271824a0b43a.... https://supercell.com/_next/static/css/2b1f271824a0b43a.css — 200 — 3.6 KiB — 59 ms — h3https://supercell.com/_next/static/css/52575853b1a92292.css/_next/static/css/52575853b1a92292.... https://supercell.com/_next/static/css/52575853b1a92292.css — 200 — 4.1 KiB — 64 ms — h3https://supercell.com/_next/static/media/supercell_logo.50e3c1ff.webp/_next/static/media/supercell_logo.... https://supercell.com/_next/static/media/supercell_logo.50e3c1ff.webp — 200 — 1.4 KiB — 100 ms — h3https://supercell.com/_next/static/media/btn_mobile_menu.4597c82b.webp/_next/static/media/btn_mobile_menu... https://supercell.com/_next/static/media/btn_mobile_menu.4597c82b.webp — 200 — 828 B — 67 ms — h3https://supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.webp/_next/static/media/frontpage_hero_... https://supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.webp — 200 — 71.7 KiB — 168 ms — h3https://supercell.com/_next/static/media/frontpage_hero.8bc64969.webp/_next/static/media/frontpage_hero.... https://supercell.com/_next/static/media/frontpage_hero.8bc64969.webp — 200 — 107.3 KiB — 204 ms — h3https://supercell.com/images/8bb77883320f0956fcc5e2b0aa91e2ad/790/Boom_Beach_PC_Launch_Announcement_A_1500x1130.webp/images/8bb77883320f0956fcc5e2b0aa9... https://supercell.com/images/8bb77883320f0956fcc5e2b0aa91e2ad/790/Boom_Beach_PC_Launch_Announcement_A_1500x1130.webp — 200 — 100.0 KiB — 203 ms — h3https://accounts.supercell.com/sdk/sdk.jsaccounts.supercell.com/sdk/sdk.js https://accounts.supercell.com/sdk/sdk.js — 200 — 2.9 KiB — 131 ms — h2https://supercell.com/_next/static/chunks/webpack-6cf6c52625633ab2.js/_next/static/chunks/webpack-6cf6c5... https://supercell.com/_next/static/chunks/webpack-6cf6c52625633ab2.js — 200 — 2.5 KiB — 66 ms — h3https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js/_next/static/chunks/framework-6c92... https://supercell.com/_next/static/chunks/framework-6c92b031f8ed2d7b.js — 200 — 44.5 KiB — 150 ms — 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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
35% of JavaScript execution is third-party
First-party Third-party 620ms · 104KB · €7/mo
Unattributable
Other
Costly
Execution 550ms
Transfer 0 KB
Monthly Cost €6/mo
OneTrust
Consent
Essential
Execution 69ms
Transfer 104 KB
Unused 64%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 550ms and costs ~€6/month

Unattributable 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

64% 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

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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