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https://kiwislot.co.nz

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
1
REVIEW
2
PASS
10
INFO
2

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

Mobile Desktop
98
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
76
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.

664 ms

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

1.04 s

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

1 ms

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

0.006

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

974 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.36 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
15
10 PASS 2 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
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/static/img/general/cork.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/static/img/general/cork-170... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
//:0 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kiwislot.co.nz/wp-content/webp-express/web... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.dmca.com/Badges/dmca-badge-w150-5x1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 558 KB
0 oversized -0 KB
6 legacy format
15 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

B
JS Bundles
9 scripts, 119 KB unused
REVIEW
9 scripts, 119 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-RBCZ...: 62 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://kiwislot.co.nz/static/js/all.js?ver=174282...: 56 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 119 KB
119 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WL144 KB62 KB (43%)✓3rd
https://kiwislot.co.nz/static/js/all.js?ver=174282838289 KB56 KB (63%)✓1st
https://images.dmca.com/Badges/DMCABadgeHelper.min.js1 KB—✓3rd
https://kiwislot.co.nz/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.01 KB—✓1st
https://kiwislot.co.nz/wp-content/plugins/webp-express/js/lazysizes.min.js4 KB—✓1st
https://kiwislot.co.nz/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.41 KB—✓1st
https://kiwislot.co.nz/static/js/custom.js?ver=17428283825 KB—✓1st
https://kiwislot.co.nz/static/js/user.js?ver=17428283821 KB—✓1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 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

A
Page Weight Budget
975 KB transferred, 48 requests
PASS
975 KB transferred, 48 requests
Info::
Page weighs 1.6 MB (975 KB transferred)
Info::
48 HTTP requests
Info::
Estimated 0.20 g CO2 per page load
975 KB / 2.4 MB budget
975 KB transferred
48 requests
0.20 g CO2 per page load
Images 557.8 KiB 57%
JavaScript 256.4 KiB 26%
Fonts 106.9 KiB 11%
CSS 34.0 KiB 3%
HTML 13.0 KiB 1%
Other 4.2 KiB 0%
Other 1.8 KiB 0%
Other 548 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
27% third-party, 0 ms blocking
PASS
27% third-party, 0 ms blocking
Info::
Third-party code accounts for 27% of page weight (268.0 KiB of 974.8 KiB)
Info::
Third-party blocking time is low (0 ms)
73%
27%
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+
JS Execution Cost
469ms total JS execution
PASS
469ms total JS execution
Info::
https://kiwislot.co.nz/: 169ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-RBCZ...: 128ms CPU time
Info::
https://kiwislot.co.nz/static/js/all.js?ver=174282...: 103ms CPU time
Info::
Unattributable: 70ms CPU time
Info::
Third-party scripts: 197ms (42% of total)

Main Thread Breakdown

Script Evaluation 35% Style & Layout 23% Other 20% Script Parsing & Compilation 14% Rendering 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://kiwislot.co.nz/169ms3ms6ms1st
https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WL128ms78ms49ms3rd
https://kiwislot.co.nz/static/js/all.js?ver=1742828382103ms72ms17ms1st
Unattributable70ms2ms0ms3rd
A+
Font Loading
5 fonts (107 KB)
PASS
5 fonts (107 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

107 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 664 ms LCP 1.0 shttps://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2S6u9w4BMUTPHh7USSwiPGQ.... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2 — 22.7 KiB — 55 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2S6uyw4BMUTPHjx4wXg.woff2 https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2 — 22.8 KiB — 62 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2S6u9w4BMUTPHh6UVSwiPGQ.... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2 — 22.3 KiB — 58 ms — font-display: swaphttps://fonts.gstatic.com/s/arsenal/v3/wXKrE3kQtZQ4pF3D51jcAA.woff2wXKrE3kQtZQ4pF3D51jcAA.... https://fonts.gstatic.com/s/arsenal/v3/wXKrE3kQtZQ4pF3D51jcAA.woff2 — 17.2 KiB — 61 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh50XSwiPGQ.woff2S6u9w4BMUTPHh50XSwiPGQ.... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh50XSwiPGQ.woff2 — 21.9 KiB — 8 ms — font-display: swap
S6u9w4BMUTPHh7USSwiPGQ.... woff2 swap
Size 23 KB
Load time 55 ms
Start 673 ms
Risk FOUT — text flashes from fallback to web font
S6uyw4BMUTPHjx4wXg.woff2 woff2 swap
Size 23 KB
Load time 62 ms
Start 673 ms
Risk FOUT — text flashes from fallback to web font
S6u9w4BMUTPHh6UVSwiPGQ.... woff2 swap
Size 22 KB
Load time 58 ms
Start 673 ms
Risk FOUT — text flashes from fallback to web font
wXKrE3kQtZQ4pF3D51jcAA.... woff2 swap
Size 17 KB
Load time 61 ms
Start 674 ms
Risk FOUT — text flashes from fallback to web font
S6u9w4BMUTPHh50XSwiPGQ.... woff2 swap
Size 22 KB
Load time 8 ms
Start 860 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Page Weight Inventory
48 resources · 975 KB · 119 KB savings available
PASS
48 resources · 975 KB · 119 KB savings available
Info::
Within 1MB page-weight target
Got: 975 KB
Info::
~119 KB of savings available
Info::
16 third-party resources (27% of weight)
48 resources · 974.8 KiB · 16 third-party Within 1MB page-weight target
Image 58% · 562.0 KiB
JavaScript 26% · 256.4 KiB
Font 11% · 106.9 KiB
CSS 3% · 34.0 KiB
Document 1% · 13.0 KiB
Other 0% · 2.4 KiB

~118.6 KiB of savings available

Remove unused JavaScript: 118.6 KiB
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
48 requests over 1699ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 664 ms LCP 1.0 shttps://kiwislot.co.nz// https://kiwislot.co.nz/ — 200 — 13.0 KiB — 661 ms — h3https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WLwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WL — 200 — 144.0 KiB — 118 ms — h2https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2fonts.gstatic.com/s/lato/v14/S6u9w4... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2 — 200 — 22.7 KiB — 55 ms — h3https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2fonts.gstatic.com/s/lato/v14/S6uyw4... https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2 — 200 — 22.8 KiB — 62 ms — h3https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2fonts.gstatic.com/s/lato/v14/S6u9w4... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2 — 200 — 22.3 KiB — 58 ms — h3https://fonts.gstatic.com/s/arsenal/v3/wXKrE3kQtZQ4pF3D51jcAA.woff2fonts.gstatic.com/s/arsenal/v3/wXKr... https://fonts.gstatic.com/s/arsenal/v3/wXKrE3kQtZQ4pF3D51jcAA.woff2 — 200 — 17.2 KiB — 61 ms — h3https://kiwislot.co.nz/static/css/main.min.css?ver=1742828382/static/css/main.min.css?ver=174282... https://kiwislot.co.nz/static/css/main.min.css?ver=1742828382 — 200 — 31.4 KiB — 30 ms — h3https://kiwislot.co.nz/static/js/all.js?ver=1742828382/static/js/all.js?ver=1742828382 https://kiwislot.co.nz/static/js/all.js?ver=1742828382 — 200 — 89.4 KiB — 57 ms — h3https://kiwislot.co.nz/wp-content/plugins/universal-banner-popup/resources/css/main.min.css?ver=1.0/wp-content/plugins/universal-banne... https://kiwislot.co.nz/wp-content/plugins/universal-banner-popup/resources/css/main.min.css?ver=1.0 — 200 — 1.8 KiB — 17 ms — h3https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/logo.png.webp/wp-content/webp-express/webp-image... https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/logo.png.webp — 200 — 5.0 KiB — 25 ms — h3https://kiwislot.co.nz/static/img/general/cork-360-260.png/static/img/general/cork-360-260.pn... https://kiwislot.co.nz/static/img/general/cork-360-260.png — 200 — 2.1 KiB — 27 ms — h3https://images.dmca.com/Badges/DMCABadgeHelper.min.jsimages.dmca.com/Badges/DMCABadgeHel... https://images.dmca.com/Badges/DMCABadgeHelper.min.js — 200 — 804 B — 39 ms — h2https://kiwislot.co.nz/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.0/wp-content/plugins/universal-banne... https://kiwislot.co.nz/wp-content/plugins/universal-banner-popup/resources/js/ajax.js?ver=1.0 — 200 — 686 B — 30 ms — h3https://kiwislot.co.nz/wp-content/plugins/webp-express/js/lazysizes.min.js/wp-content/plugins/webp-express/js... https://kiwislot.co.nz/wp-content/plugins/webp-express/js/lazysizes.min.js — 200 — 3.9 KiB — 46 ms — h3https://kiwislot.co.nz/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.4/wp-content/plugins/wp-tt-second-of... https://kiwislot.co.nz/wp-content/plugins/wp-tt-second-offer-links/script.js?ver=1.2.4 — 200 — 702 B — 46 ms — h3https://kiwislot.co.nz/static/js/custom.js?ver=1742828382/static/js/custom.js?ver=1742828382 https://kiwislot.co.nz/static/js/custom.js?ver=1742828382 — 200 — 4.7 KiB — 46 ms — h3https://kiwislot.co.nz/wp-content/plugins/wp-tt-rating-stars/static/css/rating.css?ver=5.2.3/wp-content/plugins/wp-tt-rating-st... https://kiwislot.co.nz/wp-content/plugins/wp-tt-rating-stars/static/css/rating.css?ver=5.2.3 — 200 — 902 B — 44 ms — h3https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/banner-bonus-decor-left.png.webp/wp-content/webp-express/webp-image... https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/banner-bonus-decor-left.png.webp — 200 — 6.1 KiB — 46 ms — h3https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/banner-bonus-decor-right.png.webp/wp-content/webp-express/webp-image... https://kiwislot.co.nz/wp-content/webp-express/webp-images/uploads/2020/01/banner-bonus-decor-right.png.webp — 200 — 3.9 KiB — 48 ms — h3https://kiwislot.co.nz/static/img/general/cork-170-103.png/static/img/general/cork-170-103.pn... https://kiwislot.co.nz/static/img/general/cork-170-103.png — 200 — 1.6 KiB — 45 ms — h3https://kiwislot.co.nz/static/img/general/cork.png/static/img/general/cork.png https://kiwislot.co.nz/static/img/general/cork.png — 200 — 15.0 KiB — 47 ms — h3https://images.dmca.com/Badges/dmca-badge-w150-5x1-06.png?ID=0c8308ec-f0e8-4387-a317-aa400a570da4images.dmca.com/Badges/dmca-badge-w... https://images.dmca.com/Badges/dmca-badge-w150-5x1-06.png?ID=0c8308ec-f0e8-4387-a317-aa400a570da4 — 200 — 5.0 KiB — 16 ms — h2https://kiwislot.co.nz/static/js/user.js?ver=1742828382/static/js/user.js?ver=1742828382 https://kiwislot.co.nz/static/js/user.js?ver=1742828382 — 200 — 1.4 KiB — 47 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 61 ms — h2https://kiwislot.co.nz// https://kiwislot.co.nz/ — 200 — 77.9 KiB — 538 ms — h3data:image/svg+xml,%3C%3Fxml version='1.0' encoding='iso-8859-1'%3F%3E%3C!DOCTYPE svg PUBLIC '-//W3…data:image/svg+xml,%3C%3Fxml versio... data:image/svg+xml,%3C%3Fxml version='1.0' encoding='iso-8859-1'%3F%3E%3C!DOCTYPE svg PUBLIC '-//W3… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath d='M51…www.w3.org/2000/svg' viewBox='0 0 5... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath d='M51… — 200 — 0 B — 0 ms — datahttps://kiwislot.co.nz/wp-content/uploads/2020/04/bn-1-1.webp/wp-content/uploads/2020/04/bn-1-1.... https://kiwislot.co.nz/wp-content/uploads/2020/04/bn-1-1.webp — 200 — 91.4 KiB — 41 ms — h3https://kiwislot.co.nz/wp-content/uploads/2020/04/bn-3.webp/wp-content/uploads/2020/04/bn-3.we... https://kiwislot.co.nz/wp-content/uploads/2020/04/bn-3.webp — 200 — 82.2 KiB — 42 ms — h3https://kiwislot.co.nz/wp-content/uploads/2020/04/bn-4.webp/wp-content/uploads/2020/04/bn-4.we... https://kiwislot.co.nz/wp-content/uploads/2020/04/bn-4.webp — 200 — 107.1 KiB — 44 ms — h3
0 ms 500 ms 1.0 s 1.5 s FCP 664 ms LCP 1.0 shttps://kiwislot.co.nz// https://kiwislot.co.nz/ — 200 — 13.0 KiB — 661 ms — h3https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WLwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-RBCZXBH0WL — 200 — 144.0 KiB — 118 ms — h2https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2fonts.gstatic.com/s/lato/v14/S6u9w4... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh7USSwiPGQ.woff2 — 200 — 22.7 KiB — 55 ms — h3https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2fonts.gstatic.com/s/lato/v14/S6uyw4... https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2 — 200 — 22.8 KiB — 62 ms — h3https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2fonts.gstatic.com/s/lato/v14/S6u9w4... https://fonts.gstatic.com/s/lato/v14/S6u9w4BMUTPHh6UVSwiPGQ.woff2 — 200 — 22.3 KiB — 58 ms — h3https://fonts.gstatic.com/s/arsenal/v3/wXKrE3kQtZQ4pF3D51jcAA.woff2fonts.gstatic.com/s/arsenal/v3/wXKr... 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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
42% of JavaScript execution is third-party
First-party Third-party 197ms · 144KB · NZ$6/mo
Google Tag Manager
Tag Manager
Optional
Execution 128ms
Transfer 144 KB
Unused 43%
Monthly Cost NZ$4/mo
Unattributable
Other
Optional
Execution 70ms
Transfer 0 KB
Monthly Cost NZ$2/mo

42% 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

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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