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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
3
PASS
11
INFO
2

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

Mobile Desktop
83
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
67
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.

1.07 s

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

3.85 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.

0.087

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

2.54 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.

4.07 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
11 PASS 3 REVIEW 1 FIX
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
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Warning::
//:0 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/static/img/general/cor... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/static/img/content/cor... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/static/img/content/cor... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://power-stars-777.com/wp-content/webp-expres... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
26 images 194 KB
0 oversized -0 KB
9 legacy format
17 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

C
JS Execution Cost
Action
1471ms total JS execution
REVIEW
1471ms total JS execution
Warning::
https://power-stars-777.com/static/js/all.js?ver=1...: 534ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-4E3J...: 377ms CPU time
Warning::
https://power-stars-777.com/: 332ms CPU time
Info::
Unattributable: 227ms CPU time
Info::
Third-party scripts: 604ms (41% of total)

Main Thread Breakdown

Script Evaluation 39% Style & Layout 22% Other 19% Script Parsing & Compilation 11% Rendering 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://power-stars-777.com/static/js/all.js?ver=1658398206534ms326ms20ms1st
https://www.googletagmanager.com/gtag/js?id=G-4E3JE041GW377ms229ms138ms3rd
https://power-stars-777.com/332ms8ms4ms1st
Unattributable227ms9ms0ms3rd
B
JS Bundles
8 scripts, 116 KB unused
REVIEW
8 scripts, 116 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-4E3J...: 63 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://power-stars-777.com/static/js/all.js?ver=1...: 53 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 116 KB
116 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-4E3JE041GW144 KB63 KB (44%)✓3rd
https://power-stars-777.com/static/js/all.js?ver=165839820693 KB53 KB (58%)✓1st
https://power-stars-777.com/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.01 KB—✓1st
https://power-stars-777.com/wp-content/plugins/webp-express/js/lazysizes.min.js4 KB—✓1st
https://power-stars-777.com/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.41 KB—✓1st
https://power-stars-777.com/static/js/custom.js?ver=16583982065 KB—✓1st
https://power-stars-777.com/static/js/user.js?ver=16583982063 KB—✓1st
https://power-stars-777.com/wp-content/plugins/wp-tt-rating-stars/static/js/rating.js?ver=5.4.22 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

A+
Page Weight Budget
537 KB transferred, 43 requests
PASS
537 KB transferred, 43 requests
Info::
Page weighs 1.1 MB (537 KB transferred)
Info::
43 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
537 KB / 2.4 MB budget
537 KB transferred
43 requests
0.11 g CO2 per page load
JavaScript 250.8 KiB 47%
Images 193.7 KiB 36%
Fonts 45.8 KiB 9%
CSS 24.5 KiB 5%
HTML 15.5 KiB 3%
Other 4.0 KiB 1%
Other 2.0 KiB 0%
Other 552 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
35% third-party, 0 ms blocking
PASS
35% third-party, 0 ms blocking
Info::
Third-party code accounts for 35% of page weight (190.3 KiB of 536.8 KiB)
Info::
Third-party blocking time is low (0 ms)
65%
35%
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
3 fonts (46 KB)
PASS
3 fonts (46 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

46 KB total

Render-blocking

0

of 3

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 FCP 1.1 s LCP 3.8 shttps://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19-7DRs5.woff2ieVl2ZhZI2eCN5jzbjEETS9... https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19-7DRs5.woff2 — 15.1 KiB — 125 ms — font-display: swaphttps://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ.woff2ieVl2ZhZI2eCN5jzbjEETS9... https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ.woff2 — 15.4 KiB — 121 ms — font-display: swaphttps://fonts.gstatic.com/s/robotocondensed/v18/ieVi2ZhZI2eCN5jzbjEETS9weq8-32meGCQYbw.woff2ieVi2ZhZI2eCN5jzbjEETS9... https://fonts.gstatic.com/s/robotocondensed/v18/ieVi2ZhZI2eCN5jzbjEETS9weq8-32meGCQYbw.woff2 — 15.3 KiB — 111 ms — font-display: swap
ieVl2ZhZI2eCN5jzbjEETS9... woff2 swap
Size 15 KB
Load time 125 ms
Start 598 ms
Risk FOUT — text flashes from fallback to web font
ieVl2ZhZI2eCN5jzbjEETS9... woff2 swap
Size 15 KB
Load time 121 ms
Start 598 ms
Risk FOUT — text flashes from fallback to web font
ieVi2ZhZI2eCN5jzbjEETS9... woff2 swap
Size 15 KB
Load time 111 ms
Start 598 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
9 hints, 0 missing preconnects
PASS
9 hints, 0 missing preconnects
Info::
Page uses 9 resource hint(s)

Current Resource Hints

preconnect
2
preload
6
dns-prefetch
1
prefetch
—

9 resource hints configured

A+
Page Weight Inventory
43 resources · 537 KB · 116 KB savings available
PASS
43 resources · 537 KB · 116 KB savings available
Info::
Within 1MB page-weight target
Got: 537 KB
Info::
~116 KB of savings available
Info::
6 third-party resources (35% of weight)
43 resources · 536.8 KiB · 6 third-party Within 1MB page-weight target
JavaScript 47% · 250.8 KiB
Image 36% · 195.7 KiB
Font 9% · 45.8 KiB
CSS 5% · 24.5 KiB
Document 3% · 18.1 KiB
Other 0% · 1.9 KiB

~116.3 KiB of savings available

Remove unused JavaScript: 116.3 KiB
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: Cloudflare

Network Waterfall
43 requests over 2024ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.1 s LCP 3.8 shttps://power-stars-777.com// https://power-stars-777.com/ — 200 — 15.5 KiB — 587 ms — h2https://www.googletagmanager.com/gtag/js?id=G-4E3JE041GWwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-4E3JE041GW — 200 — 144.0 KiB — 181 ms — h2https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19-7DRs5.woff2fonts.gstatic.com/s/robotocondensed... https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19-7DRs5.woff2 — 200 — 15.1 KiB — 125 ms — h3https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ.woff2fonts.gstatic.com/s/robotocondensed... https://fonts.gstatic.com/s/robotocondensed/v18/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ.woff2 — 200 — 15.4 KiB — 121 ms — h3https://fonts.gstatic.com/s/robotocondensed/v18/ieVi2ZhZI2eCN5jzbjEETS9weq8-32meGCQYbw.woff2fonts.gstatic.com/s/robotocondensed... https://fonts.gstatic.com/s/robotocondensed/v18/ieVi2ZhZI2eCN5jzbjEETS9weq8-32meGCQYbw.woff2 — 200 — 15.3 KiB — 111 ms — h3https://power-stars-777.com/static/css/main.min.css?v=1658336849/static/css/main.min.css?v=16583368... https://power-stars-777.com/static/css/main.min.css?v=1658336849 — 200 — 22.9 KiB — 31 ms — h2https://power-stars-777.com/wp-content/plugins/universal-banner-popup/resources/css/main.min.css?ver=1.0/wp-content/plugins/universal-banne... https://power-stars-777.com/wp-content/plugins/universal-banner-popup/resources/css/main.min.css?ver=1.0 — 200 — 1.6 KiB — 52 ms — h2https://power-stars-777.com/static/img/content/cork.png/static/img/content/cork.png https://power-stars-777.com/static/img/content/cork.png — 200 — 407 B — 60 ms — h2https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2022/03/logo.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2022/03/logo.png.webp — 200 — 4.9 KiB — 50 ms — h2https://power-stars-777.com/static/img/general/cork-360-260.png/static/img/general/cork-360-260.pn... https://power-stars-777.com/static/img/general/cork-360-260.png — 200 — 2.1 KiB — 100 ms — h3https://power-stars-777.com/static/js/all.js?ver=1658398206/static/js/all.js?ver=1658398206 https://power-stars-777.com/static/js/all.js?ver=1658398206 — 200 — 92.5 KiB — 143 ms — h3https://power-stars-777.com/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.0/wp-content/plugins/universal-banne... https://power-stars-777.com/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.0 — 200 — 688 B — 71 ms — h3https://power-stars-777.com/wp-content/plugins/webp-express/js/lazysizes.min.js/wp-content/plugins/webp-express/js... https://power-stars-777.com/wp-content/plugins/webp-express/js/lazysizes.min.js — 200 — 3.9 KiB — 97 ms — h3https://power-stars-777.com/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.4/wp-content/plugins/wp-tt-second-of... https://power-stars-777.com/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.4 — 200 — 696 B — 74 ms — h3https://power-stars-777.com/static/js/custom.js?ver=1658398206/static/js/custom.js?ver=1658398206 https://power-stars-777.com/static/js/custom.js?ver=1658398206 — 200 — 4.8 KiB — 112 ms — h3https://power-stars-777.com/static/js/user.js?ver=1658398206/static/js/user.js?ver=1658398206 https://power-stars-777.com/static/js/user.js?ver=1658398206 — 200 — 2.5 KiB — 96 ms — h3https://power-stars-777.com/wp-content/plugins/wp-tt-rating-stars/static/js/rating.js?ver=5.4.2/wp-content/plugins/wp-tt-rating-st... https://power-stars-777.com/wp-content/plugins/wp-tt-rating-stars/static/js/rating.js?ver=5.4.2 — 200 — 1.7 KiB — 86 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/content-manager/slot/n8YWDHjJBsPnUYn6.jpg.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/content-manager/slot/n8YWDHjJBsPnUYn6.jpg.webp — 200 — 66.4 KiB — 139 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/content-manager/slot/5Fb4DlgTPPfQQ5Ev.jpg.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/content-manager/slot/5Fb4DlgTPPfQQ5Ev.jpg.webp — 200 — 19.6 KiB — 135 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/static/img/general/cork.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/static/img/general/cork.png.webp — 200 — 522 B — 81 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Vogueplay.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Vogueplay.png.webp — 200 — 5.7 KiB — 105 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Stargames.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Stargames.png.webp — 200 — 3.1 KiB — 93 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Vegasslotsonline.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Vegasslotsonline.png.webp — 200 — 7.3 KiB — 110 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Bellfruitcasino.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2020/06/Bellfruitcasino.png.webp — 200 — 2.5 KiB — 96 ms — h3https://power-stars-777.com/static/img/content/cork-300x200.png/static/img/content/cork-300x200.pn... https://power-stars-777.com/static/img/content/cork-300x200.png — 200 — 702 B — 83 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/billionairespin-logo.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/billionairespin-logo.png.webp — 200 — 6.1 KiB — 108 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/winshark-logo.png.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/winshark-logo.png.png.webp — 200 — 6.1 KiB — 106 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/boomerang-bet-logo.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/boomerang-bet-logo.png.webp — 200 — 3.1 KiB — 96 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/nine-casino-logo.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/nine-casino-logo.png.webp — 200 — 3.8 KiB — 101 ms — h3https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/brucebet-logo.png.webp/wp-content/webp-express/webp-image... https://power-stars-777.com/wp-content/webp-express/webp-images/uploads/2025/05/brucebet-logo.png.webp — 200 — 7.1 KiB — 106 ms — h3
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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
41% of JavaScript execution is third-party
First-party Third-party 604ms · 144KB · €8/mo
Google Tag Manager
Tag Manager
Costly
Execution 377ms
Transfer 144 KB
Unused 44%
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 227ms
Transfer 0 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 377ms and costs ~€5/month
  • Unattributable adds 227ms and costs ~€3/month

41% 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

Google Tag Manager takes 377ms 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 227ms 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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