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https://ntp.org

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
4
PASS
9
INFO
2

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

Mobile Desktop
34
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
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.

5.64 s

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

7.53 s

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

259 ms

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

0.528

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

6.26 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.

8.00 s

Page Load Progression

376 ms
752 ms
1.1 s
1.5 s
1.9 s
2.3 s
2.6 s
3.0 s
Checks
17
9 PASS 4 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 (564.1 KiB of 564.3 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
Image Optimization
Action
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Warning::
https://www.ntp.org/images/icons/download.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nwtime.org/images/support.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ntp.org/images/icons/bug.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 41 KB
0 oversized -0 KB
16 legacy format
3 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

C
JS Execution Cost
Action
1684ms total JS execution
REVIEW
1684ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-K07Z...: 443ms CPU time
Warning::
Unattributable: 411ms CPU time
Info::
https://scripts.clarity.ms/0.8.59/clarity.js: 207ms CPU time
Info::
https://www.ntp.org/: 167ms CPU time
Info::
https://cse.google.com/cse.js?cx=bb3c9b3e375d856be: 164ms CPU time
Warning::
Third-party scripts: 1684ms (100% of total)

Main Thread Breakdown

Script Evaluation 49% Other 24% Script Parsing & Compilation 10% Style & Layout 10% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZ443ms309ms92ms3rd
Unattributable411ms12ms0ms3rd
https://scripts.clarity.ms/0.8.59/clarity.js207ms176ms11ms3rd
https://www.ntp.org/167ms9ms2ms3rd
https://cse.google.com/cse.js?cx=bb3c9b3e375d856be164ms125ms2ms3rd
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D159ms99ms43ms3rd
https://ep2.adtrafficquality.google/sodar/sodar2.js68ms61ms3ms3rd
https://cse.google.com/adsense/search/async-ads.js64ms43ms16ms3rd
B
JS Bundles
8 scripts, 141 KB unused
REVIEW
8 scripts, 141 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-K07Z...: 61 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.google.com/cse/static/element/b33cba58...: 48 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 141 KB
141 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZ153 KB61 KB (40%)✓3rd
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D98 KB48 KB (49%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://cse.google.com/cse.js?cx=bb3c9b3e375d856be4 KB—✓3rd
https://www.clarity.ms/tag/c33igkoodm1 KB—✓3rd
https://scripts.clarity.ms/0.8.59/clarity.js26 KB—✓3rd
https://ep2.adtrafficquality.google/sodar/sodar2.js8 KB—✓3rd
https://pagead2.googlesyndication.com/bg/CSFHWn54ZyFPe4LnLawZxin687t9epWoaqVGMgilEes.js22 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
564 KB transferred, 41 requests
PASS
564 KB transferred, 41 requests
Info::
Page weighs 1.3 MB (564 KB transferred)
Info::
41 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
564 KB / 2.4 MB budget
564 KB transferred
41 requests
0.12 g CO2 per page load
JavaScript 356.0 KiB 63%
CSS 96.6 KiB 17%
Images 40.8 KiB 7%
Fonts 30.3 KiB 5%
Other 16.8 KiB 3%
HTML 14.8 KiB 3%
Other 8.5 KiB 2%
Other 547 B 0%
0 2.4 MB 4.9 MB
Under budget
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
1 fonts (30 KB)
PASS
1 fonts (30 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

30 KB total

Render-blocking

0

of 1

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 FCP 5.6 s LCP 7.5 shttps://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2pe0TMImSLYBIv1o4X1M8ce2... https://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2 — 30.3 KiB — 7 ms — font-display: swap
pe0TMImSLYBIv1o4X1M8ce2... woff2 swap
Size 30 KB
Load time 7 ms
Start 2.4 s
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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
1
prefetch
—

2 resource hints configured

A
Page Weight Inventory
41 resources · 564 KB · 141 KB savings available
PASS
41 resources · 564 KB · 141 KB savings available
Info::
Within 1MB page-weight target
Got: 564 KB
Info::
~141 KB of savings available
Warning::
40 third-party resources (100% of weight)
41 resources · 564.3 KiB · 40 third-party Within 1MB page-weight target
JavaScript 63% · 356.0 KiB
CSS 17% · 96.6 KiB
Image 10% · 56.1 KiB
Font 5% · 30.3 KiB
Document 3% · 15.0 KiB
Other 2% · 10.3 KiB

~140.6 KiB of savings available

Remove unused JavaScript: 140.6 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
Network Waterfall
41 requests over 3997ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 5.6 s LCP 7.5 shttps://ntp.org// https://ntp.org/ — 302 — 247 B — 962 ms — http/1.1https://www.ntp.org/www.ntp.org/ https://www.ntp.org/ — 200 — 9.0 KiB — 718 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZ — 200 — 153.3 KiB — 44 ms — h2https://fonts.googleapis.com/css?family=Nunito+Sans:400,400i,700,800,800i,900i&display=swapfonts.googleapis.com/css?family=Nun... https://fonts.googleapis.com/css?family=Nunito+Sans:400,400i,700,800,800i,900i&display=swap — 200 — 1.3 KiB — 26 ms — h2https://www.ntp.org/scss/nwtime.min.33139960351778bcc5aee21b22a8ddf3.csswww.ntp.org/scss/nwtime.min.3313996... https://www.ntp.org/scss/nwtime.min.33139960351778bcc5aee21b22a8ddf3.css — 200 — 82.7 KiB — 672 ms — http/1.1https://www.nwtime.org/images/support.jpgwww.nwtime.org/images/support.jpg https://www.nwtime.org/images/support.jpg — 200 — 18.5 KiB — 1.1 s — http/1.1https://www.ntp.org/images/icons/download.svgwww.ntp.org/images/icons/download.s... https://www.ntp.org/images/icons/download.svg — 200 — 718 B — 531 ms — http/1.1https://www.ntp.org/images/icons/bug.svgwww.ntp.org/images/icons/bug.svg https://www.ntp.org/images/icons/bug.svg — 200 — 1.1 KiB — 641 ms — http/1.1https://www.ntp.org/images/logo.pngwww.ntp.org/images/logo.png https://www.ntp.org/images/logo.png — 200 — 6.4 KiB — 693 ms — http/1.1https://www.ntp.org/images/ntp_logo.jpgwww.ntp.org/images/ntp_logo.jpg https://www.ntp.org/images/ntp_logo.jpg — 200 — 4.3 KiB — 797 ms — http/1.1https://cse.google.com/cse.js?cx=bb3c9b3e375d856becse.google.com/cse.js?cx=bb3c9b3e37... https://cse.google.com/cse.js?cx=bb3c9b3e375d856be — 200 — 3.6 KiB — 37 ms — h2https://www.ntp.org/images/icons/discourse.svgwww.ntp.org/images/icons/discourse.... https://www.ntp.org/images/icons/discourse.svg — 200 — 833 B — 697 ms — http/1.1https://www.clarity.ms/tag/c33igkoodmwww.clarity.ms/tag/c33igkoodm https://www.clarity.ms/tag/c33igkoodm — 200 — 1.1 KiB — 19 ms — http/1.1https://scripts.clarity.ms/0.8.59/clarity.jsscripts.clarity.ms/0.8.59/clarity.j... https://scripts.clarity.ms/0.8.59/clarity.js — 200 — 26.2 KiB — 25 ms — h2https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3Dwww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D — 200 — 98.5 KiB — 32 ms — h3https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css — 200 — 9.7 KiB — 24 ms — h3https://www.google.com/cse/static/style/look/v6/minimalist.csswww.google.com/cse/static/style/loo... https://www.google.com/cse/static/style/look/v6/minimalist.css — 200 — 1.3 KiB — 17 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-K07ZJQFYSZ&gtm=45je64f0v881845073za200zd881845073&_p=1776358749843&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=1514196474.1776358750&frm=0&pscdl=noapi&rcb=1&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938469~116363098~117266400&sid=1776358749&sct=1&seg=0&dl=https%3A%2F%2Fwww.ntp.org%2F&dt=Welcome%20to%20the%20home%20of%20the%20Network%20Time%20Protocol%20(NTP)%20Project.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.anonymize_ip=true&tfd=1856www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-K07ZJQFYSZ&gtm=45je64f0v881845073za200zd881845073&_p=1776358749843&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=1514196474.1776358750&frm=0&pscdl=noapi&rcb=1&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938469~116363098~117266400&sid=1776358749&sct=1&seg=0&dl=https%3A%2F%2Fwww.ntp.org%2F&dt=Welcome%20to%20the%20home%20of%20the%20Network%20Time%20Protocol%20(NTP)%20Project.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.anonymize_ip=true&tfd=1856 — 204 — 547 B — 23 ms — h2https://www.ntp.org/images/icons/linkedin.svgwww.ntp.org/images/icons/linkedin.s... https://www.ntp.org/images/icons/linkedin.svg — 200 — 1002 B — 351 ms — http/1.1https://www.ntp.org/images/icons/newspaper.svgwww.ntp.org/images/icons/newspaper.... https://www.ntp.org/images/icons/newspaper.svg — 200 — 891 B — 352 ms — http/1.1https://www.ntp.org/images/icons/facebook.svgwww.ntp.org/images/icons/facebook.s... https://www.ntp.org/images/icons/facebook.svg — 200 — 727 B — 459 ms — http/1.1https://www.google.com/cse/static/element/b33cba5881f68fbf/mobile_v6+en.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/mobile_v6+en.css — 200 — 1.5 KiB — 8 ms — h3https://cse.google.com/adsense/search/async-ads.jscse.google.com/adsense/search/async... https://cse.google.com/adsense/search/async-ads.js — 200 — 43.7 KiB — 14 ms — h2data:image/svg+xml;utf8,<svg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://w…w… data:image/svg+xml;utf8,<svg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://w… — 200 — 0 B — 0 ms — datahttps://www.google.com/cse/static/css/v2/clear.pngwww.google.com/cse/static/css/v2/cl... https://www.google.com/cse/static/css/v2/clear.png — 200 — 1.0 KiB — 4 ms — h3https://www.google.com/cse/static/images/1x/en/branding.pngwww.google.com/cse/static/images/1x... https://www.google.com/cse/static/images/1x/en/branding.png — 200 — 1.5 KiB — 5 ms — h3https://www.google.com/cse/static/images/2x/en/branding.pngwww.google.com/cse/static/images/2x... https://www.google.com/cse/static/images/2x/en/branding.png — 200 — 3.3 KiB — 5 ms — h3https://clients1.google.com/generate_204clients1.google.com/generate_204 https://clients1.google.com/generate_204 — 204 — 117 B — 15 ms — h2https://q.clarity.ms/collectq.clarity.ms/collect https://q.clarity.ms/collect — 204 — 275 B — 674 ms — http/1.1https://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2fonts.gstatic.com/s/nunitosans/v19/... https://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2 — 200 — 30.3 KiB — 7 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 FCP 5.6 s LCP 7.5 shttps://ntp.org// https://ntp.org/ — 302 — 247 B — 962 ms — http/1.1https://www.ntp.org/www.ntp.org/ https://www.ntp.org/ — 200 — 9.0 KiB — 718 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-K07ZJQFYSZ — 200 — 153.3 KiB — 44 ms — h2https://fonts.googleapis.com/css?family=Nunito+Sans:400,400i,700,800,800i,900i&display=swapfonts.googleapis.com/css?family=Nun... https://fonts.googleapis.com/css?family=Nunito+Sans:400,400i,700,800,800i,900i&display=swap — 200 — 1.3 KiB — 26 ms — h2https://www.ntp.org/scss/nwtime.min.33139960351778bcc5aee21b22a8ddf3.csswww.ntp.org/scss/nwtime.min.3313996... https://www.ntp.org/scss/nwtime.min.33139960351778bcc5aee21b22a8ddf3.css — 200 — 82.7 KiB — 672 ms — http/1.1https://www.nwtime.org/images/support.jpgwww.nwtime.org/images/support.jpg https://www.nwtime.org/images/support.jpg — 200 — 18.5 KiB — 1.1 s — http/1.1https://www.ntp.org/images/icons/download.svgwww.ntp.org/images/icons/download.s... https://www.ntp.org/images/icons/download.svg — 200 — 718 B — 531 ms — http/1.1https://www.ntp.org/images/icons/bug.svgwww.ntp.org/images/icons/bug.svg https://www.ntp.org/images/icons/bug.svg — 200 — 1.1 KiB — 641 ms — http/1.1https://www.ntp.org/images/logo.pngwww.ntp.org/images/logo.png https://www.ntp.org/images/logo.png — 200 — 6.4 KiB — 693 ms — http/1.1https://www.ntp.org/images/ntp_logo.jpgwww.ntp.org/images/ntp_logo.jpg https://www.ntp.org/images/ntp_logo.jpg — 200 — 4.3 KiB — 797 ms — http/1.1https://cse.google.com/cse.js?cx=bb3c9b3e375d856becse.google.com/cse.js?cx=bb3c9b3e37... https://cse.google.com/cse.js?cx=bb3c9b3e375d856be — 200 — 3.6 KiB — 37 ms — h2https://www.ntp.org/images/icons/discourse.svgwww.ntp.org/images/icons/discourse.... https://www.ntp.org/images/icons/discourse.svg — 200 — 833 B — 697 ms — http/1.1https://www.clarity.ms/tag/c33igkoodmwww.clarity.ms/tag/c33igkoodm https://www.clarity.ms/tag/c33igkoodm — 200 — 1.1 KiB — 19 ms — http/1.1https://scripts.clarity.ms/0.8.59/clarity.jsscripts.clarity.ms/0.8.59/clarity.j... https://scripts.clarity.ms/0.8.59/clarity.js — 200 — 26.2 KiB — 25 ms — h2https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3Dwww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D — 200 — 98.5 KiB — 32 ms — h3https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css — 200 — 9.7 KiB — 24 ms — h3https://www.google.com/cse/static/style/look/v6/minimalist.csswww.google.com/cse/static/style/loo... https://www.google.com/cse/static/style/look/v6/minimalist.css — 200 — 1.3 KiB — 17 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-K07ZJQFYSZ&gtm=45je64f0v881845073za200zd881845073&_p=1776358749843&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=1514196474.1776358750&frm=0&pscdl=noapi&rcb=1&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938469~116363098~117266400&sid=1776358749&sct=1&seg=0&dl=https%3A%2F%2Fwww.ntp.org%2F&dt=Welcome%20to%20the%20home%20of%20the%20Network%20Time%20Protocol%20(NTP)%20Project.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.anonymize_ip=true&tfd=1856www.google-analytics.com/g/collect?... 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— 204 — 17 B — 10 ms — h3https://q.clarity.ms/collectq.clarity.ms/collect https://q.clarity.ms/collect — 204 — 275 B — 231 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 1684ms · 342KB · $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 443ms
Transfer 153 KB
Unused 40%
Monthly Cost $1/mo
Unattributable
Other
Costly
Execution 411ms
Transfer 0 KB
Monthly Cost $1/mo
Microsoft Clarity
Session Replay
Costly
Execution 207ms
Transfer 26 KB
Monthly Cost $1/mo
www.ntp.org
Other
Optional
Execution 167ms
Transfer 9 KB
Monthly Cost $1/mo
cse.google.com
Other
Optional
Execution 164ms
Transfer 4 KB
Monthly Cost $1/mo
www.google.com
Other
Optional
Execution 159ms
Transfer 98 KB
Unused 49%
Monthly Cost $1/mo
ep2.adtrafficquality.google
Other
Optional
Execution 68ms
Transfer 8 KB
Monthly Cost $0/mo
cse.google.com
Other
Optional
Execution 64ms
Transfer 44 KB
Unused 73%
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 443ms and costs ~$1/month
  • Unattributable adds 411ms and costs ~$1/month
  • Microsoft Clarity adds 207ms and costs ~$1/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

Google Tag Manager takes 443ms 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 411ms 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

Microsoft Clarity takes 207ms 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

73% of cse.google.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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