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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
65
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.
100
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.

2.74 s

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

7.69 s

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

287 ms

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

0.037

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

2.74 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.

8.06 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
10 PASS 3 REVIEW 2 FIX
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 (945.5 KiB of 945.9 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
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
JS Execution Cost
Action
1610ms total JS execution
REVIEW
1610ms total JS execution
Warning::
https://us.betway.com/_next/static/chunks/684-43b1...: 376ms CPU time
Warning::
Unattributable: 270ms CPU time
Warning::
https://us.betway.com/_next/static/chunks/989-8ea7...: 261ms CPU time
Warning::
https://us.betway.com/?referral_source=Betway_com: 253ms CPU time
Info::
https://us.betway.com/_next/static/chunks/4bd1b696...: 173ms CPU time
Warning::
Third-party scripts: 1610ms (100% of total)

Main Thread Breakdown

Script Evaluation 53% Other 19% Script Parsing & Compilation 16% Style & Layout 6% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.js376ms344ms23ms3rd
Unattributable270ms10ms0ms3rd
https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.js261ms205ms55ms3rd
https://us.betway.com/?referral_source=Betway_com253ms9ms46ms3rd
https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.js173ms154ms19ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7V146ms97ms48ms3rd
https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.js81ms7ms61ms3rd
https://websdk.appsflyer.com/?st=banners&50ms35ms7ms3rd
C
JS Bundles
Action
14 scripts, 216 KB unused
REVIEW
14 scripts, 216 KB unused
Warning::
https://us.betway.com/_next/static/chunks/989-8ea7...: 94 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PM4...: 69 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://us.betway.com/_next/static/chunks/32-b5e15...: 52 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 216 KB
216 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.js139 KB94 KB (68%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7V118 KB69 KB (59%)✓3rd
https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.js68 KB52 KB (77%)✓3rd
https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.js53 KB—✓3rd
https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.js46 KB—✓3rd
https://us.betway.com/_next/static/chunks/main-app-df55f4bdaf350cb2.js0 KB—✓3rd
https://media.src-play.com/plugins/analytics/vtrk-min.js14 KB—✗3rd
https://us.betway.com/_next/static/chunks/33-3592978e61528295.js5 KB—✓3rd
https://us.betway.com/_next/static/chunks/webpack-c48cf33b0cc87c26.js2 KB—✓3rd
https://us.betway.com/_next/static/chunks/app/layout-6ed5185dc83c7bda.js3 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

B
Page Weight Inventory
38 resources · 946 KB · 216 KB savings available
REVIEW
38 resources · 946 KB · 216 KB savings available
Info::
Within 1MB page-weight target
Got: 946 KB
Info::
~216 KB of savings available
Warning::
37 third-party resources (100% of weight)
38 resources · 945.9 KiB · 37 third-party Within 1MB page-weight target
JavaScript 49% · 466.1 KiB
Font 25% · 234.6 KiB
Image 21% · 197.9 KiB
Document 5% · 43.4 KiB
Other 0% · 2.3 KiB
CSS 0% · 1.7 KiB

~215.9 KiB of savings available

Remove unused JavaScript: 215.9 KiB
A
Page Weight Budget
946 KB transferred, 38 requests
PASS
946 KB transferred, 38 requests
Info::
Page weighs 2.5 MB (946 KB transferred)
Info::
Fonts are 235 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 235 KB
Info::
38 HTTP requests
Info::
Estimated 0.19 g CO2 per page load
946 KB / 2.4 MB budget
946 KB transferred
38 requests
0.19 g CO2 per page load
JavaScript 466.1 KiB 49%
Fonts 234.6 KiB 25%
Images 190.2 KiB 20%
HTML 43.1 KiB 5%
Other 8.3 KiB 1%
CSS 1.7 KiB 0%
Other 1.4 KiB 0%
Other 603 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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+
Image Optimization
5 images, 0 KB saveable
PASS
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 190 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
4 fonts (235 KB)
PASS
4 fonts (235 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

235 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 2.7 s LCP 7.7 shttps://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttf232001bb1bdf0b81-s.ttf https://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttf — 56.9 KiB — 62 ms — font-display: swaphttps://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttf6b847572fea78a9d-s.ttf https://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttf — 61.3 KiB — 58 ms — font-display: swaphttps://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttf95790c0a23bffe82-s.ttf https://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttf — 61.3 KiB — 60 ms — font-display: swaphttps://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttf6ed7c82a3b90d4d5-s.ttf https://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttf — 55.1 KiB — 83 ms — font-display: swap
232001bb1bdf0b81-s.ttf ttf swap
Size 57 KB
Load time 62 ms
Start 318 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
6b847572fea78a9d-s.ttf ttf swap
Size 61 KB
Load time 58 ms
Start 320 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
95790c0a23bffe82-s.ttf ttf swap
Size 61 KB
Load time 60 ms
Start 321 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
6ed7c82a3b90d4d5-s.ttf ttf swap
Size 55 KB
Load time 83 ms
Start 321 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~70 KB and ~140 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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
1
preload
3
dns-prefetch
—
prefetch
—

4 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+
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
38 requests over 999ms
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 FCP 2.7 s LCP 7.7 shttps://betway.com// https://betway.com/ — 301 — 336 B — 62 ms — h2https://us.betway.com//?referral_source=Betway_comus.betway.com//?referral_source=Bet... https://us.betway.com//?referral_source=Betway_com — 308 — 276 B — 95 ms — h2https://us.betway.com/?referral_source=Betway_comus.betway.com/?referral_source=Betw... https://us.betway.com/?referral_source=Betway_com — 200 — 42.7 KiB — 53 ms — h2https://a-us.storyblok.com/f/1018866/200x242/a92829ae9b/spc_scroll_badge.png/m/640x0/filters:quality(75)a-us.storyblok.com/f/1018866/200x24... https://a-us.storyblok.com/f/1018866/200x242/a92829ae9b/spc_scroll_badge.png/m/640x0/filters:quality(75) — 200 — 27.3 KiB — 30 ms — h2https://a-us.storyblok.com/f/1018866/1920x890/2231fc55a7/spin-palace-hero-main-desktop-image.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/1920x8... https://a-us.storyblok.com/f/1018866/1920x890/2231fc55a7/spin-palace-hero-main-desktop-image.png/m/750x0/filters:quality(75) — 200 — 41.0 KiB — 21 ms — h2https://us.betway.com/_next/static/css/fbe0d42ae5f42ce1.cssus.betway.com/_next/static/css/fbe0... https://us.betway.com/_next/static/css/fbe0d42ae5f42ce1.css — 200 — 611 B — 44 ms — h2https://us.betway.com/_next/static/css/5ebbe67d543cb44e.cssus.betway.com/_next/static/css/5ebb... https://us.betway.com/_next/static/css/5ebbe67d543cb44e.css — 200 — 441 B — 45 ms — h2https://us.betway.com/_next/static/css/19169baf2040ec17.cssus.betway.com/_next/static/css/1916... https://us.betway.com/_next/static/css/19169baf2040ec17.css — 200 — 671 B — 49 ms — h2https://media.src-play.com/plugins/analytics/vtrk-min.jsmedia.src-play.com/plugins/analytic... https://media.src-play.com/plugins/analytics/vtrk-min.js — 200 — 13.8 KiB — 55 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7Vwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7V — 200 — 117.7 KiB — 69 ms — h2https://a-us.storyblok.com/f/1018866/768x600/760922540b/rectangle-150297.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/768x60... https://a-us.storyblok.com/f/1018866/768x600/760922540b/rectangle-150297.png/m/750x0/filters:quality(75) — 200 — 62.2 KiB — 26 ms — h2https://a-us.storyblok.com/f/1018866/375x590/06b38cd8e2/rectangle-150297.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/375x59... https://a-us.storyblok.com/f/1018866/375x590/06b38cd8e2/rectangle-150297.png/m/750x0/filters:quality(75) — 200 — 36.6 KiB — 22 ms — h2https://us.betway.com/_next/static/chunks/webpack-c48cf33b0cc87c26.jsus.betway.com/_next/static/chunks/w... https://us.betway.com/_next/static/chunks/webpack-c48cf33b0cc87c26.js — 200 — 2.1 KiB — 68 ms — h2https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.jsus.betway.com/_next/static/chunks/4... https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.js — 200 — 52.8 KiB — 89 ms — h2https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.jsus.betway.com/_next/static/chunks/6... https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.js — 200 — 46.4 KiB — 62 ms — h2https://us.betway.com/_next/static/chunks/main-app-df55f4bdaf350cb2.jsus.betway.com/_next/static/chunks/m... https://us.betway.com/_next/static/chunks/main-app-df55f4bdaf350cb2.js — 200 — 474 B — 78 ms — h2https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.jsus.betway.com/_next/static/chunks/9... https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.js — 200 — 138.6 KiB — 93 ms — h2https://us.betway.com/_next/static/chunks/33-3592978e61528295.jsus.betway.com/_next/static/chunks/3... https://us.betway.com/_next/static/chunks/33-3592978e61528295.js — 200 — 5.3 KiB — 55 ms — h2https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.jsus.betway.com/_next/static/chunks/3... https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.js — 200 — 67.7 KiB — 62 ms — h2https://us.betway.com/_next/static/chunks/app/layout-6ed5185dc83c7bda.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/layout-6ed5185dc83c7bda.js — 200 — 3.0 KiB — 74 ms — h2https://us.betway.com/_next/static/chunks/app/not-found-40e79cf194bac03d.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/not-found-40e79cf194bac03d.js — 200 — 1.1 KiB — 80 ms — h2https://us.betway.com/_next/static/chunks/app/page-8bc48637db426add.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/page-8bc48637db426add.js — 200 — 1.0 KiB — 67 ms — h2https://us.betway.com/ensighten-betway.htmlus.betway.com/ensighten-betway.html https://us.betway.com/ensighten-betway.html — 200 — 380 B — 101 ms — h2https://a-us.storyblok.com/f/1018866/625x154/f81f16073e/spc-logo-horiz.png/m/640x0/filters:quality(75)a-us.storyblok.com/f/1018866/625x15... https://a-us.storyblok.com/f/1018866/625x154/f81f16073e/spc-logo-horiz.png/m/640x0/filters:quality(75) — 200 — 23.1 KiB — 10 ms — h2https://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttfus.betway.com/_next/static/media/23... https://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttf — 200 — 56.9 KiB — 62 ms — h2https://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttfus.betway.com/_next/static/media/6b... https://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttf — 200 — 61.3 KiB — 58 ms — h2https://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttfus.betway.com/_next/static/media/95... https://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttf — 200 — 61.3 KiB — 60 ms — h2https://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttfus.betway.com/_next/static/media/6e... https://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttf — 200 — 55.1 KiB — 83 ms — h2https://nexus.ensighten.com/betway/betway-us/Bootstrap.jsnexus.ensighten.com/betway/betway-u... https://nexus.ensighten.com/betway/betway-us/Bootstrap.js — 200 — 407 B — 173 ms — h3https://featureassets.org/v1/initialize?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435170&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&se=1featureassets.org/v1/initialize?k=c... https://featureassets.org/v1/initialize?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435170&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&se=1 — 200 — 844 B — 111 ms — h2
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 FCP 2.7 s LCP 7.7 shttps://betway.com// https://betway.com/ — 301 — 336 B — 62 ms — h2https://us.betway.com//?referral_source=Betway_comus.betway.com//?referral_source=Bet... https://us.betway.com//?referral_source=Betway_com — 308 — 276 B — 95 ms — h2https://us.betway.com/?referral_source=Betway_comus.betway.com/?referral_source=Betw... https://us.betway.com/?referral_source=Betway_com — 200 — 42.7 KiB — 53 ms — h2https://a-us.storyblok.com/f/1018866/200x242/a92829ae9b/spc_scroll_badge.png/m/640x0/filters:quality(75)a-us.storyblok.com/f/1018866/200x24... https://a-us.storyblok.com/f/1018866/200x242/a92829ae9b/spc_scroll_badge.png/m/640x0/filters:quality(75) — 200 — 27.3 KiB — 30 ms — h2https://a-us.storyblok.com/f/1018866/1920x890/2231fc55a7/spin-palace-hero-main-desktop-image.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/1920x8... https://a-us.storyblok.com/f/1018866/1920x890/2231fc55a7/spin-palace-hero-main-desktop-image.png/m/750x0/filters:quality(75) — 200 — 41.0 KiB — 21 ms — h2https://us.betway.com/_next/static/css/fbe0d42ae5f42ce1.cssus.betway.com/_next/static/css/fbe0... https://us.betway.com/_next/static/css/fbe0d42ae5f42ce1.css — 200 — 611 B — 44 ms — h2https://us.betway.com/_next/static/css/5ebbe67d543cb44e.cssus.betway.com/_next/static/css/5ebb... https://us.betway.com/_next/static/css/5ebbe67d543cb44e.css — 200 — 441 B — 45 ms — h2https://us.betway.com/_next/static/css/19169baf2040ec17.cssus.betway.com/_next/static/css/1916... https://us.betway.com/_next/static/css/19169baf2040ec17.css — 200 — 671 B — 49 ms — h2https://media.src-play.com/plugins/analytics/vtrk-min.jsmedia.src-play.com/plugins/analytic... https://media.src-play.com/plugins/analytics/vtrk-min.js — 200 — 13.8 KiB — 55 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7Vwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-PM43D7V — 200 — 117.7 KiB — 69 ms — h2https://a-us.storyblok.com/f/1018866/768x600/760922540b/rectangle-150297.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/768x60... https://a-us.storyblok.com/f/1018866/768x600/760922540b/rectangle-150297.png/m/750x0/filters:quality(75) — 200 — 62.2 KiB — 26 ms — h2https://a-us.storyblok.com/f/1018866/375x590/06b38cd8e2/rectangle-150297.png/m/750x0/filters:quality(75)a-us.storyblok.com/f/1018866/375x59... https://a-us.storyblok.com/f/1018866/375x590/06b38cd8e2/rectangle-150297.png/m/750x0/filters:quality(75) — 200 — 36.6 KiB — 22 ms — h2https://us.betway.com/_next/static/chunks/webpack-c48cf33b0cc87c26.jsus.betway.com/_next/static/chunks/w... https://us.betway.com/_next/static/chunks/webpack-c48cf33b0cc87c26.js — 200 — 2.1 KiB — 68 ms — h2https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.jsus.betway.com/_next/static/chunks/4... https://us.betway.com/_next/static/chunks/4bd1b696-2f5509e4233cfea3.js — 200 — 52.8 KiB — 89 ms — h2https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.jsus.betway.com/_next/static/chunks/6... https://us.betway.com/_next/static/chunks/684-43b17c63b11cc5b3.js — 200 — 46.4 KiB — 62 ms — h2https://us.betway.com/_next/static/chunks/main-app-df55f4bdaf350cb2.jsus.betway.com/_next/static/chunks/m... https://us.betway.com/_next/static/chunks/main-app-df55f4bdaf350cb2.js — 200 — 474 B — 78 ms — h2https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.jsus.betway.com/_next/static/chunks/9... https://us.betway.com/_next/static/chunks/989-8ea7443ad518af03.js — 200 — 138.6 KiB — 93 ms — h2https://us.betway.com/_next/static/chunks/33-3592978e61528295.jsus.betway.com/_next/static/chunks/3... https://us.betway.com/_next/static/chunks/33-3592978e61528295.js — 200 — 5.3 KiB — 55 ms — h2https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.jsus.betway.com/_next/static/chunks/3... https://us.betway.com/_next/static/chunks/32-b5e159d5608796be.js — 200 — 67.7 KiB — 62 ms — h2https://us.betway.com/_next/static/chunks/app/layout-6ed5185dc83c7bda.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/layout-6ed5185dc83c7bda.js — 200 — 3.0 KiB — 74 ms — h2https://us.betway.com/_next/static/chunks/app/not-found-40e79cf194bac03d.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/not-found-40e79cf194bac03d.js — 200 — 1.1 KiB — 80 ms — h2https://us.betway.com/_next/static/chunks/app/page-8bc48637db426add.jsus.betway.com/_next/static/chunks/a... https://us.betway.com/_next/static/chunks/app/page-8bc48637db426add.js — 200 — 1.0 KiB — 67 ms — h2https://us.betway.com/ensighten-betway.htmlus.betway.com/ensighten-betway.html https://us.betway.com/ensighten-betway.html — 200 — 380 B — 101 ms — h2https://a-us.storyblok.com/f/1018866/625x154/f81f16073e/spc-logo-horiz.png/m/640x0/filters:quality(75)a-us.storyblok.com/f/1018866/625x15... https://a-us.storyblok.com/f/1018866/625x154/f81f16073e/spc-logo-horiz.png/m/640x0/filters:quality(75) — 200 — 23.1 KiB — 10 ms — h2https://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttfus.betway.com/_next/static/media/23... https://us.betway.com/_next/static/media/232001bb1bdf0b81-s.ttf — 200 — 56.9 KiB — 62 ms — h2https://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttfus.betway.com/_next/static/media/6b... https://us.betway.com/_next/static/media/6b847572fea78a9d-s.ttf — 200 — 61.3 KiB — 58 ms — h2https://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttfus.betway.com/_next/static/media/95... https://us.betway.com/_next/static/media/95790c0a23bffe82-s.ttf — 200 — 61.3 KiB — 60 ms — h2https://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttfus.betway.com/_next/static/media/6e... https://us.betway.com/_next/static/media/6ed7c82a3b90d4d5-s.ttf — 200 — 55.1 KiB — 83 ms — h2https://nexus.ensighten.com/betway/betway-us/Bootstrap.jsnexus.ensighten.com/betway/betway-u... https://nexus.ensighten.com/betway/betway-us/Bootstrap.js — 200 — 407 B — 173 ms — h3https://featureassets.org/v1/initialize?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435170&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&se=1featureassets.org/v1/initialize?k=c... https://featureassets.org/v1/initialize?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435170&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&se=1 — 200 — 844 B — 111 ms — h2https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435172&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=1&gz=1prodregistryv2.org/v1/rgstr?k=clien... https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435172&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=1&gz=1 — 202 — 119 B — 48 ms — h2https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435173&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=1&gz=1prodregistryv2.org/v1/rgstr?k=clien... https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client&sv=3.18.0&t=1776900435173&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=1&gz=1 — 202 — 342 B — 41 ms — h2https://gateway.betway.com/VisitTracking/V1/Websitesgateway.betway.com/VisitTracking/V1... https://gateway.betway.com/VisitTracking/V1/Websites — 204 — 0 B — 123 ms — h2https://us.betway.com/favicon.icous.betway.com/favicon.ico https://us.betway.com/favicon.ico — 200 — 7.7 KiB — 147 ms — h2https://websdk.appsflyer.com/?st=banners&websdk.appsflyer.com/?st=banners& https://websdk.appsflyer.com/?st=banners& — 200 — 15.8 KiB — 68 ms — h3https://gateway.betway.com/VisitTracking/V1/Websitesgateway.betway.com/VisitTracking/V1... https://gateway.betway.com/VisitTracking/V1/Websites — 200 — 162 B — 286 ms — h2https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client-react&sv=3.18.0&t=1776900435360&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=2&gz=1prodregistryv2.org/v1/rgstr?k=clien... https://prodregistryv2.org/v1/rgstr?k=client-oRUei8pcrXtqEguFnim47U6fHCtWv05chWxLOWEP1bK&st=javascript-client-react&sv=3.18.0&t=1776900435360&sid=1c7e3b56-e4a3-4c5f-b1ff-5ecde3f59275&ec=2&gz=1 — 202 — 119 B — 26 ms — h2https://banner.appsflyersdk.com/sb/3bb9ca30-c9bc-4d77-85ed-26476bcf4ad7/creative/listbanner.appsflyersdk.com/sb/3bb9ca30... https://banner.appsflyersdk.com/sb/3bb9ca30-c9bc-4d77-85ed-26476bcf4ad7/creative/list — 200 — 441 B — 77 ms — http/1.1
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 1610ms · 482KB · $21/mo
us.betway.com
Other
Costly
Execution 376ms
Transfer 46 KB
Monthly Cost $5/mo
Unattributable
Other
Costly
Execution 270ms
Transfer 0 KB
Monthly Cost $4/mo
us.betway.com
Other
Costly
Execution 261ms
Transfer 139 KB
Unused 68%
Monthly Cost $3/mo
us.betway.com
Other
Costly
Execution 253ms
Transfer 43 KB
Monthly Cost $3/mo
us.betway.com
Other
Optional
Execution 173ms
Transfer 53 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 146ms
Transfer 118 KB
Unused 59%
Monthly Cost $2/mo
us.betway.com
Other
Optional
Execution 81ms
Transfer 68 KB
Unused 77%
Monthly Cost $1/mo
websdk.appsflyer.com
Other
Optional
Execution 50ms
Transfer 16 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • us.betway.com adds 376ms and costs ~$5/month
  • Unattributable adds 270ms and costs ~$4/month
  • us.betway.com adds 261ms and costs ~$3/month
  • us.betway.com adds 253ms 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

us.betway.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

Unattributable takes 270ms 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

us.betway.com 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

68% of us.betway.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

us.betway.com takes 253ms 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

59% 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

77% of us.betway.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

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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