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https://gambleaware.org

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
2
REVIEW
5
PASS
8
INFO
2

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

Mobile Desktop
58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.
92
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.

5.26 s

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

9.14 s

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

216 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.

5.26 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.

9.16 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
8 PASS 5 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 (1.2 MiB of 1.2 MiB)
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.

B
Page Weight Budget
1.2 MB transferred, 55 requests
REVIEW
1.2 MB transferred, 55 requests
Info::
Page weighs 2.7 MB (1.2 MB transferred)
Warning::
JavaScript is 579 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 579 KB
Info::
55 HTTP requests
Info::
Estimated 0.26 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
55 requests
0.26 g CO2 per page load
JavaScript 578.9 KiB 46%
Images 447.6 KiB 36%
Fonts 109.9 KiB 9%
CSS 86.5 KiB 7%
HTML 13.4 KiB 1%
Other 4.8 KiB 0%
Other 4.5 KiB 0%
Other 2.0 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under 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

C
JS Execution Cost
Action
1345ms total JS execution
REVIEW
1345ms total JS execution
Warning::
https://consent.cookiebot.com/uc.js?cbid=4f3076c7-...: 364ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-WGF...: 233ms CPU time
Info::
Unattributable: 224ms CPU time
Info::
https://www.gambleaware.org/js/global.min.js?v=639...: 204ms CPU time
Info::
https://www.gambleaware.org/js/3120.min.js: 171ms CPU time
Warning::
Third-party scripts: 1345ms (100% of total)

Main Thread Breakdown

Script Evaluation 44% Style & Layout 18% Other 17% Script Parsing & Compilation 9% Parse HTML & CSS 9%
ScriptTotalScriptingParse/CompileParty
https://consent.cookiebot.com/uc.js?cbid=4f3076c7-790e-4182-ab0e-7b09d0805679&implementation=gtm&consentmode-dataredaction=dynamic364ms210ms12ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WGFWJB5233ms193ms39ms3rd
Unattributable224ms8ms0ms3rd
https://www.gambleaware.org/js/global.min.js?v=639106482980824938204ms54ms3ms3rd
https://www.gambleaware.org/js/3120.min.js171ms114ms37ms3rd
https://www.gambleaware.org/js/530.min.js78ms5ms0ms3rd
https://www.gambleaware.org/71ms7ms2ms3rd
C
JS Bundles
Action
23 scripts, 242 KB unused
REVIEW
23 scripts, 242 KB unused
Warning::
https://www.gambleaware.org/js/3120.min.js: 82 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WGF...: 70 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/4f3076c7-790e-4182-a...: 25 KB unused (24%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/uc.js?cbid=4f3076c7-...: 23 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gambleaware.org/js/7178.min.js: 22 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 242 KB
242 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gambleaware.org/js/3120.min.js131 KB82 KB (63%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WGFWJB5162 KB70 KB (44%)✓3rd
https://consent.cookiebot.com/4f3076c7-790e-4182-ab0e-7b09d0805679/cc.js?renew=false&referer=www.gambleaware.org&dnt=false&init=false104 KB25 KB (24%)✓3rd
https://consent.cookiebot.com/uc.js?cbid=4f3076c7-790e-4182-ab0e-7b09d0805679&implementation=gtm&consentmode-dataredaction=dynamic36 KB23 KB (64%)✓3rd
https://www.gambleaware.org/js/7178.min.js32 KB22 KB (72%)✓3rd
https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.7.1.min.js30 KB20 KB (68%)✓3rd
https://www.gambleaware.org/js/2977.min.js3 KB—✓3rd
https://www.gambleaware.org/js/9621.min.js2 KB—✓3rd
https://www.gambleaware.org/js/530.min.js2 KB—✓3rd
https://www.gambleaware.org/js/2148.min.js6 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

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

C
Page Weight Inventory
Action
55 resources · 1.2 MB · 242 KB savings available
REVIEW
55 resources · 1.2 MB · 242 KB savings available
Warning::
Page weight 224 KB over 1MB target
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~242 KB of savings available
Warning::
54 third-party resources (100% of weight)
55 resources · 1.2 MiB · 54 third-party 223.6 KiB over 1MB target
JavaScript 46% · 578.9 KiB
Image 36% · 452.0 KiB
Font 9% · 109.9 KiB
CSS 7% · 86.5 KiB
Document 1% · 13.5 KiB
Other 1% · 6.9 KiB

~241.7 KiB of savings available

Remove unused JavaScript: 241.7 KiB
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
Image Optimization
14 images, 0 KB saveable
PASS
14 images, 0 KB saveable
Warning::
https://www.gambleaware.org/media/3wslw2i4/gamble-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
14 images 448 KB
0 oversized -0 KB
1 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

A+
Font Loading
4 fonts (110 KB)
PASS
4 fonts (110 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

110 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 9.0 s FCP 5.3 s LCP 9.1 shttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 35 ms — font-display: swaphttps://www.gambleaware.org/assets/fonts/iconfont.woff2?t=1774957786020iconfont.woff2 https://www.gambleaware.org/assets/fonts/iconfont.woff2?t=1774957786020 — 20.5 KiB — 119 ms — font-display: swaphttps://use.typekit.net/af/a4c79a/00000000000000007735d6d0/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/a4c79a/00000000000000007735d6d0/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 28.2 KiB — 17 ms — font-display: swaphttps://use.typekit.net/af/802c96/00000000000000007735d6bd/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3l https://use.typekit.net/af/802c96/00000000000000007735d6bd/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3 — 24.5 KiB — 18 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 35 ms
Start 366 ms
Risk FOUT — text flashes from fallback to web font
iconfont.woff2 woff2 swap
Size 20 KB
Load time 119 ms
Start 366 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 28 KB
Load time 17 ms
Start 366 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 25 KB
Load time 18 ms
Start 367 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
7 hints, 0 missing preconnects
PASS
7 hints, 0 missing preconnects
Info::
Page uses 7 resource hint(s)

Current Resource Hints

preconnect
6
preload
1
dns-prefetch
—
prefetch
—

7 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
55 requests over 752ms
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 9.0 s FCP 5.3 s LCP 9.1 shttps://gambleaware.org// https://gambleaware.org/ — 301 — 88 B — 83 ms — h2https://www.gambleaware.org/www.gambleaware.org/ https://www.gambleaware.org/ — 200 — 12.6 KiB — 116 ms — h2https://use.typekit.net/aqh6khp.cssuse.typekit.net/aqh6khp.css https://use.typekit.net/aqh6khp.css — 200 — 1.7 KiB — 42 ms — h2https://fonts.googleapis.com/css2?family=Red+Hat+Text:ital,wght@0,300..700;1,300..700&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swapfonts.googleapis.com/css2?family=Re... https://fonts.googleapis.com/css2?family=Red+Hat+Text:ital,wght@0,300..700;1,300..700&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap — 200 — 3.0 KiB — 95 ms — h2https://www.gambleaware.org/css/style.min.css?v=639106482970380564www.gambleaware.org/css/style.min.c... https://www.gambleaware.org/css/style.min.css?v=639106482970380564 — 200 — 81.6 KiB — 96 ms — h2https://www.gambleaware.org/js/global.min.js?v=639106482980824938www.gambleaware.org/js/global.min.j... https://www.gambleaware.org/js/global.min.js?v=639106482980824938 — 200 — 14.6 KiB — 94 ms — h2https://www.gambleaware.org/media/mr2d3rnl/logo-orange.png?format=webpwww.gambleaware.org/media/mr2d3rnl/... https://www.gambleaware.org/media/mr2d3rnl/logo-orange.png?format=webp — 200 — 2.3 KiB — 81 ms — h2https://www.gambleaware.org/media/3wslw2i4/gamble-aware-logo.svgwww.gambleaware.org/media/3wslw2i4/... https://www.gambleaware.org/media/3wslw2i4/gamble-aware-logo.svg — 200 — 2.4 KiB — 94 ms — h2https://www.gambleaware.org/media/wxupqe5p/ga-website-film-thumb-3.jpg?format=webp&width=500www.gambleaware.org/media/wxupqe5p/... https://www.gambleaware.org/media/wxupqe5p/ga-website-film-thumb-3.jpg?format=webp&width=500 — 200 — 13.7 KiB — 68 ms — h2https://www.gambleaware.org/media/oesik34c/image-6.png?format=webp&width=700www.gambleaware.org/media/oesik34c/... https://www.gambleaware.org/media/oesik34c/image-6.png?format=webp&width=700 — 200 — 182.5 KiB — 83 ms — h2https://www.gambleaware.org/media/2ftcyxje/how-gambling-impacts-loved-ones-maia-thumbnail.jpg?format=webp&width=700www.gambleaware.org/media/2ftcyxje/... https://www.gambleaware.org/media/2ftcyxje/how-gambling-impacts-loved-ones-maia-thumbnail.jpg?format=webp&width=700 — 200 — 10.0 KiB — 45 ms — h2https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.7.1.min.jsajax.aspnetcdn.com/ajax/jQuery/jque... https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.7.1.min.js — 200 — 30.0 KiB — 57 ms — h2https://ajax.aspnetcdn.com/ajax/jquery.validate/1.16.0/jquery.validate.min.jsajax.aspnetcdn.com/ajax/jquery.vali... https://ajax.aspnetcdn.com/ajax/jquery.validate/1.16.0/jquery.validate.min.js — 200 — 7.5 KiB — 55 ms — h2https://ajax.aspnetcdn.com/ajax/mvc/5.2.3/jquery.validate.unobtrusive.min.jsajax.aspnetcdn.com/ajax/mvc/5.2.3/j... https://ajax.aspnetcdn.com/ajax/mvc/5.2.3/jquery.validate.unobtrusive.min.js — 200 — 2.7 KiB — 57 ms — h2https://www.gambleaware.org/media/wrghwi5e/understanding-the-risks-naman-thumbnail.jpg?format=webp&width=700www.gambleaware.org/media/wrghwi5e/... https://www.gambleaware.org/media/wrghwi5e/understanding-the-risks-naman-thumbnail.jpg?format=webp&width=700 — 200 — 11.1 KiB — 45 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-WGFWJB5www.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-WGFWJB5 — 200 — 161.7 KiB — 167 ms — h2https://www.gambleaware.org/site.webmanifestwww.gambleaware.org/site.webmanifes... https://www.gambleaware.org/site.webmanifest — 200 — 2.0 KiB — 112 ms — h3https://p.typekit.net/p.css?s=1&k=aqh6khp&ht=tk&f=12783.12784.12785.12786.12787.12788.12789.12790.12791.31623.10419.10421.12093.12094.12095.12096.12097.12098.10415.10416.10417.10418&a=393341256&app=typekit&e=cssp.typekit.net/p.css?s=1&k=aqh6khp&h... https://p.typekit.net/p.css?s=1&k=aqh6khp&ht=tk&f=12783.12784.12785.12786.12787.12788.12789.12790.12791.31623.10419.10421.12093.12094.12095.12096.12097.12098.10415.10416.10417.10418&a=393341256&app=typekit&e=css — 200 — 172 B — 42 ms — h2data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL… — 200 — 0 B — 0 ms — datahttps://www.gambleaware.org/js/4551.min.jswww.gambleaware.org/js/4551.min.js https://www.gambleaware.org/js/4551.min.js — 200 — 9.8 KiB — 132 ms — h3https://www.gambleaware.org/js/1758.min.jswww.gambleaware.org/js/1758.min.js https://www.gambleaware.org/js/1758.min.js — 200 — 5.3 KiB — 114 ms — h3https://www.gambleaware.org/js/7368.min.jswww.gambleaware.org/js/7368.min.js https://www.gambleaware.org/js/7368.min.js — 200 — 3.3 KiB — 117 ms — h3https://www.gambleaware.org/js/530.min.jswww.gambleaware.org/js/530.min.js https://www.gambleaware.org/js/530.min.js — 200 — 2.3 KiB — 116 ms — h3https://www.gambleaware.org/js/2148.min.jswww.gambleaware.org/js/2148.min.js https://www.gambleaware.org/js/2148.min.js — 200 — 6.5 KiB — 131 ms — h3https://www.gambleaware.org/js/2977.min.jswww.gambleaware.org/js/2977.min.js https://www.gambleaware.org/js/2977.min.js — 200 — 2.8 KiB — 120 ms — h3https://www.gambleaware.org/js/7178.min.jswww.gambleaware.org/js/7178.min.js https://www.gambleaware.org/js/7178.min.js — 200 — 32.0 KiB — 121 ms — h3https://www.gambleaware.org/js/2644.min.jswww.gambleaware.org/js/2644.min.js https://www.gambleaware.org/js/2644.min.js — 200 — 5.7 KiB — 131 ms — h3https://www.gambleaware.org/js/3120.min.jswww.gambleaware.org/js/3120.min.js https://www.gambleaware.org/js/3120.min.js — 200 — 130.7 KiB — 155 ms — h3https://www.gambleaware.org/js/1578.min.jswww.gambleaware.org/js/1578.min.js https://www.gambleaware.org/js/1578.min.js — 200 — 2.3 KiB — 149 ms — h3https://www.gambleaware.org/js/9621.min.jswww.gambleaware.org/js/9621.min.js https://www.gambleaware.org/js/9621.min.js — 200 — 2.3 KiB — 120 ms — h3
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 5.3 s LCP 9.1 shttps://gambleaware.org// https://gambleaware.org/ — 301 — 88 B — 83 ms — h2https://www.gambleaware.org/www.gambleaware.org/ https://www.gambleaware.org/ — 200 — 12.6 KiB — 116 ms — h2https://use.typekit.net/aqh6khp.cssuse.typekit.net/aqh6khp.css https://use.typekit.net/aqh6khp.css — 200 — 1.7 KiB — 42 ms — h2https://fonts.googleapis.com/css2?family=Red+Hat+Text:ital,wght@0,300..700;1,300..700&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swapfonts.googleapis.com/css2?family=Re... https://fonts.googleapis.com/css2?family=Red+Hat+Text:ital,wght@0,300..700;1,300..700&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap — 200 — 3.0 KiB — 95 ms — h2https://www.gambleaware.org/css/style.min.css?v=639106482970380564www.gambleaware.org/css/style.min.c... 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h2https://www.gambleaware.org/media/oesik34c/image-6.png?format=webp&width=700www.gambleaware.org/media/oesik34c/... https://www.gambleaware.org/media/oesik34c/image-6.png?format=webp&width=700 — 200 — 182.5 KiB — 83 ms — h2https://www.gambleaware.org/media/2ftcyxje/how-gambling-impacts-loved-ones-maia-thumbnail.jpg?format=webp&width=700www.gambleaware.org/media/2ftcyxje/... https://www.gambleaware.org/media/2ftcyxje/how-gambling-impacts-loved-ones-maia-thumbnail.jpg?format=webp&width=700 — 200 — 10.0 KiB — 45 ms — h2https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.7.1.min.jsajax.aspnetcdn.com/ajax/jQuery/jque... https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.7.1.min.js — 200 — 30.0 KiB — 57 ms — h2https://ajax.aspnetcdn.com/ajax/jquery.validate/1.16.0/jquery.validate.min.jsajax.aspnetcdn.com/ajax/jquery.vali... https://ajax.aspnetcdn.com/ajax/jquery.validate/1.16.0/jquery.validate.min.js — 200 — 7.5 KiB — 55 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
100% of JavaScript execution is third-party
First-party Third-party 1345ms · 358KB · €15/mo
consent.cookiebot.com
Other
Costly
Execution 364ms
Transfer 36 KB
Unused 64%
Monthly Cost €4/mo
Google Tag Manager
Tag Manager
Costly
Execution 233ms
Transfer 162 KB
Unused 44%
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 224ms
Transfer 0 KB
Monthly Cost €2/mo
www.gambleaware.org
Other
Costly
Execution 204ms
Transfer 15 KB
Monthly Cost €2/mo
www.gambleaware.org
Other
Optional
Execution 171ms
Transfer 131 KB
Unused 63%
Monthly Cost €2/mo
www.gambleaware.org
Other
Optional
Execution 78ms
Transfer 2 KB
Monthly Cost €1/mo
www.gambleaware.org
Other
Optional
Execution 71ms
Transfer 13 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • consent.cookiebot.com adds 364ms and costs ~€4/month
  • Google Tag Manager adds 233ms and costs ~€3/month
  • Unattributable adds 224ms and costs ~€2/month
  • www.gambleaware.org adds 204ms and costs ~€2/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

consent.cookiebot.com takes 364ms 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 consent.cookiebot.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

Google Tag Manager takes 233ms 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 224ms 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

www.gambleaware.org takes 204ms 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

63% of www.gambleaware.org'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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