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https://webaim.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
87
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.
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.

1.30 s

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

1.99 s

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

4 ms

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

0.008

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

1.30 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.

1.99 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
8 PASS 4 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.

B
Third-Party Impact
59% third-party, 0 ms blocking
REVIEW
59% third-party, 0 ms blocking
Warning::
Third-party code accounts for 59% of page weight (284.6 KiB of 478.9 KiB)
Info::
Third-party blocking time is low (0 ms)
41%
59%
First-party Third-party
B
Image Optimization
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Info::
All images are well-optimized
22 images 116 KB
0 oversized -0 KB
22 legacy format
0 missing dimensions CLS risk
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
479 KB transferred, 39 requests
PASS
479 KB transferred, 39 requests
Info::
Page weighs 948 KB (479 KB transferred)
Info::
39 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
479 KB / 2.4 MB budget
479 KB transferred
39 requests
0.10 g CO2 per page load
JavaScript 214.3 KiB 45%
Images 116.1 KiB 24%
Fonts 102.1 KiB 21%
Other 32.6 KiB 7%
CSS 10.2 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+
JS Execution Cost
251ms total JS execution
PASS
251ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-Y41P...: 103ms CPU time
Info::
Unattributable: 77ms CPU time
Info::
https://webaim.org/: 71ms CPU time
Warning::
Third-party scripts: 180ms (72% of total)

Main Thread Breakdown

Script Evaluation 38% Other 32% Style & Layout 19% Script Parsing & Compilation 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-Y41PF8WV9X103ms87ms11ms3rd
Unattributable77ms2ms0ms3rd
https://webaim.org/71ms1ms0ms1st
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 500 ms 1.0 s 1.5 s 2.0 s FCP 1.3 s LCP 2.0 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 — 65 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2KFOMCnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2 — 16.1 KiB — 42 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2memQYaGs126MiZpBA-UFUIc... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2 — 13.9 KiB — 34 ms — font-display: swaphttps://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2vm82dR7vXErQxuzngLk6Lsf... https://fonts.gstatic.com/s/kameron/v18/vm82dR7vXErQxuzngLk6LsfLcH4.woff2 — 30.1 KiB — 61 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 65 ms
Start 768 ms
Risk FOUT — text flashes from fallback to web font
KFOMCnqEu92Fr1ME7kSn66a... woff2 swap
Size 16 KB
Load time 42 ms
Start 769 ms
Risk FOUT — text flashes from fallback to web font
memQYaGs126MiZpBA-UFUIc... woff2 swap
Size 14 KB
Load time 34 ms
Start 769 ms
Risk FOUT — text flashes from fallback to web font
vm82dR7vXErQxuzngLk6Lsf... woff2 swap
Size 30 KB
Load time 61 ms
Start 769 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
39 resources · 479 KB · 81 KB savings available
PASS
39 resources · 479 KB · 81 KB savings available
Info::
Within 1MB page-weight target
Got: 479 KB
Info::
~81 KB of savings available
Warning::
10 third-party resources (59% of weight)
39 resources · 478.9 KiB · 10 third-party Within 1MB page-weight target
JavaScript 45% · 214.3 KiB
Image 31% · 148.7 KiB
Font 21% · 102.1 KiB
CSS 2% · 10.2 KiB
Document 1% · 3.0 KiB
Other 0% · 566 B

~80.9 KiB of savings available

Remove unused JavaScript: 80.9 KiB
Network Waterfall
39 requests over 1339ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.3 s LCP 2.0 shttps://webaim.org// https://webaim.org/ — 200 — 3.0 KiB — 362 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 — 177.7 KiB — 164 ms — h2https://webaim.org/styles/main.css/styles/main.css https://webaim.org/styles/main.css — 200 — 3.7 KiB — 122 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 — 240 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 — 349 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 — 75 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 — 78 ms — h2https://webaim.org/styles/home.css/styles/home.css https://webaim.org/styles/home.css — 200 — 1.5 KiB — 240 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 — 80 ms — h2https://webaim.org/media/logo.png/media/logo.png https://webaim.org/media/logo.png — 200 — 16.6 KiB — 470 ms — http/1.1https://webaim.org/media/template/search.svg/media/template/search.svg https://webaim.org/media/template/search.svg — 200 — 883 B — 356 ms — http/1.1https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64h1v899903185za200zd899903185&_p=1776809937575&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1798671593.1776809938&frm=0&pscdl=noapi&rcb=4&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&sid=1776809937&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=619region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64h1v899903185za200zd899903185&_p=1776809937575&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1798671593.1776809938&frm=0&pscdl=noapi&rcb=4&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&sid=1776809937&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=619 — 204 — 545 B — 67 ms — h2https://www.google.com/ccm/collect?rcb=4&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=2058246485.1776809938&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=2074778200.1776809938&navt=n&npa=1&gtm=45je64h1v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809937829&tfd=632www.google.com/ccm/collect?rcb=4&fr... https://www.google.com/ccm/collect?rcb=4&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=2058246485.1776809938&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=2074778200.1776809938&navt=n&npa=1&gtm=45je64h1v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809937829&tfd=632 — 200 — 21 B — 61 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 — 124 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 — 245 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 — 158 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_training.svg/media/template/bg_training.svg https://webaim.org/media/template/bg_training.svg — 200 — 1.8 KiB — 199 ms — http/1.1https://webaim.org/media/home/consultingicon.svg/media/home/consultingicon.svg https://webaim.org/media/home/consultingicon.svg — 200 — 2.1 KiB — 202 ms — http/1.1https://webaim.org/media/home/evalicon.svg/media/home/evalicon.svg https://webaim.org/media/home/evalicon.svg — 200 — 1.4 KiB — 208 ms — http/1.1https://webaim.org/media/home/strategica11yicon.svg/media/home/strategica11yicon.svg https://webaim.org/media/home/strategica11yicon.svg — 200 — 4.8 KiB — 211 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 — 253 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 — 65 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2fonts.gstatic.com/s/roboto/v51/KFOM... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2 — 200 — 16.1 KiB — 42 ms — h3https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2 — 200 — 13.9 KiB — 34 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 — 61 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 — 119 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 — 117 ms — http/1.1
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.3 s LCP 2.0 shttps://webaim.org// https://webaim.org/ — 200 — 3.0 KiB — 362 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 — 177.7 KiB — 164 ms — h2https://webaim.org/styles/main.css/styles/main.css https://webaim.org/styles/main.css — 200 — 3.7 KiB — 122 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 — 240 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 — 349 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 — 75 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 — 78 ms — h2https://webaim.org/styles/home.css/styles/home.css https://webaim.org/styles/home.css — 200 — 1.5 KiB — 240 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 — 80 ms — h2https://webaim.org/media/logo.png/media/logo.png https://webaim.org/media/logo.png — 200 — 16.6 KiB — 470 ms — http/1.1https://webaim.org/media/template/search.svg/media/template/search.svg https://webaim.org/media/template/search.svg — 200 — 883 B — 356 ms — http/1.1https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64h1v899903185za200zd899903185&_p=1776809937575&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1798671593.1776809938&frm=0&pscdl=noapi&rcb=4&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&sid=1776809937&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=619region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-Y41PF8WV9X&gtm=45je64h1v899903185za200zd899903185&_p=1776809937575&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1798671593.1776809938&frm=0&pscdl=noapi&rcb=4&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&sid=1776809937&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=619 — 204 — 545 B — 67 ms — h2https://www.google.com/ccm/collect?rcb=4&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=2058246485.1776809938&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=2074778200.1776809938&navt=n&npa=1&gtm=45je64h1v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809937829&tfd=632www.google.com/ccm/collect?rcb=4&fr... https://www.google.com/ccm/collect?rcb=4&frm=0&en=page_view&dl=https%3A%2F%2Fwebaim.org%2F&scrsrc=www.googletagmanager.com&rnd=2058246485.1776809938&dt=WebAIM%3A%20Web%20Accessibility%20In%20Mind&auid=2074778200.1776809938&navt=n&npa=1&gtm=45je64h1v899903185za200zd899903185xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938465~115938468~117266401~117884344&apve=1&apvf=f&apvc=1&tids=AW-1069381703&tid=AW-1069381703&tft=1776809937829&tfd=632 — 200 — 21 B — 61 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 — 124 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 — 245 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 — 158 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_training.svg/media/template/bg_training.svg https://webaim.org/media/template/bg_training.svg — 200 — 1.8 KiB — 199 ms — http/1.1https://webaim.org/media/home/consultingicon.svg/media/home/consultingicon.svg https://webaim.org/media/home/consultingicon.svg — 200 — 2.1 KiB — 202 ms — http/1.1https://webaim.org/media/home/evalicon.svg/media/home/evalicon.svg https://webaim.org/media/home/evalicon.svg — 200 — 1.4 KiB — 208 ms — http/1.1https://webaim.org/media/home/strategica11yicon.svg/media/home/strategica11yicon.svg https://webaim.org/media/home/strategica11yicon.svg — 200 — 4.8 KiB — 211 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 — 253 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 — 65 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2fonts.gstatic.com/s/roboto/v51/KFOM... https://fonts.gstatic.com/s/roboto/v51/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNWubEbVmUiAr0klQmz24.woff2 — 200 — 16.1 KiB — 42 ms — h3https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkWVAewIMUdjFXmQ.woff2 — 200 — 13.9 KiB — 34 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 — 61 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 — 119 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 — 117 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 — 121 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 — 129 ms — http/1.1https://webaim.org/media/template/bg_contact.svg/media/template/bg_contact.svg https://webaim.org/media/template/bg_contact.svg — 200 — 842 B — 117 ms — http/1.1https://webaim.org/media/template/bg_about.svg/media/template/bg_about.svg https://webaim.org/media/template/bg_about.svg — 200 — 2.9 KiB — 119 ms — http/1.1https://webaim.org/media/template/bg_rss.svg/media/template/bg_rss.svg https://webaim.org/media/template/bg_rss.svg — 200 — 1.2 KiB — 117 ms — http/1.1https://webaim.org/media/template/bg_li.svg/media/template/bg_li.svg https://webaim.org/media/template/bg_li.svg — 200 — 1.0 KiB — 119 ms — http/1.1https://webaim.org/media/template/bg_terms.svg/media/template/bg_terms.svg https://webaim.org/media/template/bg_terms.svg — 200 — 2.3 KiB — 121 ms — http/1.1https://webaim.org/media/favicon.ico/media/favicon.ico https://webaim.org/media/favicon.ico — 200 — 32.6 KiB — 121 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
72% of JavaScript execution is third-party
First-party Third-party 180ms · 178KB · $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 103ms
Transfer 178 KB
Unused 33%
Monthly Cost $1/mo
Unattributable
Other
Optional
Execution 77ms
Transfer 0 KB
Monthly Cost $1/mo

72% 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

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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