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https://webaim.org

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
4
PASS
9
INFO
2

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

Mobile Desktop
59
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.

4.52 s

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

6.24 s

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

273 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.

5.68 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.

6.26 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
9 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
60% third-party, 0 ms blocking
FIX
60% third-party, 0 ms blocking
Warning::
Third-party code accounts for 60% of page weight (284.4 KiB of 470.4 KiB)
Info::
Third-party blocking time is low (0 ms)
40%
60%
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
Image Optimization
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Info::
All images are well-optimized
19 images 108 KB
0 oversized -0 KB
19 legacy format
0 missing dimensions CLS risk
B
JS Execution Cost
941ms total JS execution
REVIEW
941ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Y41P...: 422ms CPU time
Warning::
Unattributable: 273ms CPU time
Info::
https://webaim.org/media/scripts/jquery.js: 175ms CPU time
Info::
https://webaim.org/: 71ms CPU time
Warning::
Third-party scripts: 695ms (74% of total)

Main Thread Breakdown

Script Evaluation 42% Other 27% Style & Layout 18% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9X422ms353ms53ms3rd
Unattributable273ms7ms0ms3rd
https://webaim.org/media/scripts/jquery.js175ms37ms7ms1st
https://webaim.org/71ms5ms1ms1st
B
JS Bundles
3 scripts, 81 KB unused
REVIEW
3 scripts, 81 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Y41P...: 58 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://webaim.org/media/scripts/jquery.js: 23 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 81 KB
81 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9X178 KB58 KB (33%)✓3rd
https://webaim.org/media/scripts/jquery.js34 KB23 KB (67%)✓1st
https://webaim.org/media/scripts/main.js2 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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

Green Hosting

No green hosting detected

A+
Page Weight Budget
470 KB transferred, 36 requests
PASS
470 KB transferred, 36 requests
Info::
Page weighs 940 KB (470 KB transferred)
Info::
36 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
470 KB / 2.4 MB budget
470 KB transferred
36 requests
0.10 g CO2 per page load
JavaScript 214.2 KiB 46%
Images 107.8 KiB 23%
Fonts 102.0 KiB 22%
Other 32.6 KiB 7%
CSS 10.3 KiB 2%
HTML 3.0 KiB 1%
Other 566 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
4 fonts (102 KB)
PASS
4 fonts (102 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

102 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 FCP 4.5 s LCP 6.2 shttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 62 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2KFOMCnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2 — 16.0 KiB — 35 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2memQYaGs126MiZpBA-UFUIc... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2 — 13.8 KiB — 51 ms — font-display: swaphttps://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2vm82dR7vXErQxuzngLk6Lsf... https://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2 — 30.1 KiB — 60 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 62 ms
Start 765 ms
Risk FOUT — text flashes from fallback to web font
KFOMCnqEu92Fr1ME7kSn66a... woff2 swap
Size 16 KB
Load time 35 ms
Start 765 ms
Risk FOUT — text flashes from fallback to web font
memQYaGs126MiZpBA-UFUIc... woff2 swap
Size 14 KB
Load time 51 ms
Start 766 ms
Risk FOUT — text flashes from fallback to web font
vm82dR7vXErQxuzngLk6Lsf... woff2 swap
Size 30 KB
Load time 60 ms
Start 766 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
36 resources · 470 KB · 81 KB savings available
PASS
36 resources · 470 KB · 81 KB savings available
Info::
Within 1MB page-weight target
Got: 470 KB
Info::
~81 KB of savings available
Warning::
10 third-party resources (60% of weight)
36 resources · 470.4 KiB · 10 third-party Within 1MB page-weight target
JavaScript 46% · 214.2 KiB
Image 30% · 140.4 KiB
Font 22% · 102.0 KiB
CSS 2% · 10.3 KiB
Document 1% · 3.0 KiB
Other 0% · 566 B

~81.0 KiB of savings available

Remove unused JavaScript: 81.0 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
36 requests over 1322ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.5 s LCP 6.2 shttps://webaim.org// https://webaim.org/ — 200 — 3.0 KiB — 360 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9X — 200 — 177.6 KiB — 152 ms — h2https://webaim.org/styles/main.css/styles/main.css https://webaim.org/styles/main.css — 200 — 3.7 KiB — 120 ms — http/1.1https://webaim.org/media/scripts/jquery.js/media/scripts/jquery.js https://webaim.org/media/scripts/jquery.js — 200 — 34.2 KiB — 241 ms — http/1.1https://webaim.org/media/scripts/main.js/media/scripts/main.js https://webaim.org/media/scripts/main.js — 200 — 2.4 KiB — 348 ms — http/1.1https://fonts.googleapis.com/css?family=Roboto:400fonts.googleapis.com/css?family=Rob... https://fonts.googleapis.com/css?family=Roboto:400 — 200 — 1.9 KiB — 94 ms — h2https://fonts.googleapis.com/css?family=Kameron:400,700fonts.googleapis.com/css?family=Kam... https://fonts.googleapis.com/css?family=Kameron:400,700 — 200 — 496 B — 97 ms — h2https://webaim.org/styles/home.css/styles/home.css https://webaim.org/styles/home.css — 200 — 1.5 KiB — 237 ms — http/1.1https://fonts.googleapis.com/css?family=Open+Sans:400,400i,700fonts.googleapis.com/css?family=Ope... https://fonts.googleapis.com/css?family=Open+Sans:400,400i,700 — 200 — 1.9 KiB — 100 ms — h2https://webaim.org/media/logo.png/media/logo.png https://webaim.org/media/logo.png — 200 — 16.6 KiB — 465 ms — http/1.1https://webaim.org/media/template/search.svg/media/template/search.svg https://webaim.org/media/template/search.svg — 200 — 883 B — 353 ms — http/1.1https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64k0h2v899903185za200zd899903185&_p=1776809914318&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=2068408259.1776809915&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400&sid=1776809914&sct=1&seg=0&dl=https%3A%2F%2Fwebaim.org%2F&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=608region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64k0h2v899903185za200zd899903185&_p=1776809914318&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=2068408259.1776809915&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400&sid=1776809914&sct=1&seg=0&dl=https%3A%2F%2Fwebaim.org%2F&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=608 — 204 — 545 B — 86 ms — h2https://www.google.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=1959642826.1776809915&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=1907884783.1776809915&navt=n&npa=1&gtm=45je64k0h2v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938466~115938469~117266400&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809914569&tfd=624www.google.com/ccm/collect?rcb=5&fr... https://www.google.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=1959642826.1776809915&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=1907884783.1776809915&navt=n&npa=1&gtm=45je64k0h2v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938466~115938469~117266400&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809914569&tfd=624 — 200 — 21 B — 62 ms — h3https://webaim.org/styles/print.css/styles/print.css https://webaim.org/styles/print.css — 200 — 794 B — 117 ms — http/1.1https://webaim.org/media/template/mainbg.png/media/template/mainbg.png https://webaim.org/media/template/mainbg.png — 200 — 1.3 KiB — 121 ms — http/1.1https://webaim.org/media/banners/home.jpg/media/banners/home.jpg https://webaim.org/media/banners/home.jpg — 200 — 47.0 KiB — 350 ms — http/1.1https://webaim.org/media/template/bg_logo.png/media/template/bg_logo.png https://webaim.org/media/template/bg_logo.png — 200 — 16.1 KiB — 121 ms — http/1.1https://webaim.org/media/template/bg_search.svg/media/template/bg_search.svg https://webaim.org/media/template/bg_search.svg — 200 — 1.4 KiB — 120 ms — http/1.1https://webaim.org/media/template/bg_intro.svg/media/template/bg_intro.svg https://webaim.org/media/template/bg_intro.svg — 200 — 3.8 KiB — 202 ms — http/1.1https://webaim.org/media/template/bg_training.svg/media/template/bg_training.svg https://webaim.org/media/template/bg_training.svg — 200 — 1.8 KiB — 202 ms — http/1.1https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.0 KiB — 62 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2fonts.gstatic.com/s/roboto/v51/KFOM... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2 — 200 — 16.0 KiB — 35 ms — h3https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2 — 200 — 13.8 KiB — 51 ms — h3https://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2fonts.gstatic.com/s/kameron/v18/vm8... https://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2 — 200 — 30.1 KiB — 60 ms — h3https://webaim.org/media/template/bg_footer.png/media/template/bg_footer.png https://webaim.org/media/template/bg_footer.png — 200 — 791 B — 118 ms — http/1.1https://webaim.org/media/template/bg_copyright.svg/media/template/bg_copyright.svg https://webaim.org/media/template/bg_copyright.svg — 200 — 3.0 KiB — 117 ms — http/1.1https://webaim.org/media/template/bg_phone.svg/media/template/bg_phone.svg https://webaim.org/media/template/bg_phone.svg — 200 — 1.1 KiB — 119 ms — http/1.1https://webaim.org/media/template/bg_wave.svg/media/template/bg_wave.svg https://webaim.org/media/template/bg_wave.svg — 200 — 1.7 KiB — 117 ms — http/1.1https://webaim.org/media/template/bg_blog.svg/media/template/bg_blog.svg https://webaim.org/media/template/bg_blog.svg — 200 — 2.1 KiB — 118 ms — http/1.1https://webaim.org/media/template/bg_popular.svg/media/template/bg_popular.svg https://webaim.org/media/template/bg_popular.svg — 200 — 2.0 KiB — 117 ms — http/1.1
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.5 s LCP 6.2 shttps://webaim.org// https://webaim.org/ — 200 — 3.0 KiB — 360 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9X — 200 — 177.6 KiB — 152 ms — h2https://webaim.org/styles/main.css/styles/main.css https://webaim.org/styles/main.css — 200 — 3.7 KiB — 120 ms — http/1.1https://webaim.org/media/scripts/jquery.js/media/scripts/jquery.js https://webaim.org/media/scripts/jquery.js — 200 — 34.2 KiB — 241 ms — http/1.1https://webaim.org/media/scripts/main.js/media/scripts/main.js https://webaim.org/media/scripts/main.js — 200 — 2.4 KiB — 348 ms — http/1.1https://fonts.googleapis.com/css?family=Roboto:400fonts.googleapis.com/css?family=Rob... https://fonts.googleapis.com/css?family=Roboto:400 — 200 — 1.9 KiB — 94 ms — h2https://fonts.googleapis.com/css?family=Kameron:400,700fonts.googleapis.com/css?family=Kam... https://fonts.googleapis.com/css?family=Kameron:400,700 — 200 — 496 B — 97 ms — h2https://webaim.org/styles/home.css/styles/home.css https://webaim.org/styles/home.css — 200 — 1.5 KiB — 237 ms — http/1.1https://fonts.googleapis.com/css?family=Open+Sans:400,400i,700fonts.googleapis.com/css?family=Ope... https://fonts.googleapis.com/css?family=Open+Sans:400,400i,700 — 200 — 1.9 KiB — 100 ms — h2https://webaim.org/media/logo.png/media/logo.png https://webaim.org/media/logo.png — 200 — 16.6 KiB — 465 ms — http/1.1https://webaim.org/media/template/search.svg/media/template/search.svg https://webaim.org/media/template/search.svg — 200 — 883 B — 353 ms — http/1.1https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64k0h2v899903185za200zd899903185&_p=1776809914318&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=2068408259.1776809915&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400&sid=1776809914&sct=1&seg=0&dl=https%3A%2F%2Fwebaim.org%2F&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=608region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64k0h2v899903185za200zd899903185&_p=1776809914318&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=2068408259.1776809915&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938469~117266400&sid=1776809914&sct=1&seg=0&dl=https%3A%2F%2Fwebaim.org%2F&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=608 — 204 — 545 B — 86 ms — 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https://webaim.org/media/template/bg_training.svg — 200 — 1.8 KiB — 202 ms — http/1.1https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.0 KiB — 62 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2fonts.gstatic.com/s/roboto/v51/KFOM... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0lFQm.woff2 — 200 — 16.0 KiB — 35 ms — h3https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMSdjE.woff2 — 200 — 13.8 KiB — 51 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
74% of JavaScript execution is third-party
First-party Third-party 695ms · 178KB · $9/mo
Google Tag Manager
Tag Manager
Costly
Execution 422ms
Transfer 178 KB
Unused 33%
Monthly Cost $6/mo
Unattributable
Other
Costly
Execution 273ms
Transfer 0 KB
Monthly Cost $4/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 422ms and costs ~$6/month
  • Unattributable adds 273ms and costs ~$4/month

74% 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 422ms 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 273ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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