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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
68
GRADE
D
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
16
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
68
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
67
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.

3.80 s

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

8.28 s

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

1.56 s

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

0.353

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

9.09 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.

25.72 s

Page Load Progression

614 ms
1.2 s
1.8 s
2.5 s
3.1 s
3.7 s
4.3 s
4.9 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
3.4 MB transferred, 158 requests
FIX
3.4 MB transferred, 158 requests
Warning::
Page weighs 10.6 MB (3.4 MB transferred)
Warning::
JavaScript is 2.5 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.5 MB
Info::
Fonts are 224 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 224 KB
Info::
CSS is 216 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 216 KB
Warning::
158 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.72 g CO2 per page load
3.4 MB / 2.4 MB budget
3.4 MB transferred
158 requests
0.72 g CO2 per page load
JavaScript 2.5 MiB 73%
Images 300.1 KiB 9%
Fonts 224.4 KiB 6%
CSS 216.0 KiB 6%
HTML 136.5 KiB 4%
Other 42.1 KiB 1%
Other 17.0 KiB 0%
Other 559 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

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 (3.4 MiB of 3.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
7416ms total JS execution
FIX
7416ms total JS execution
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 1792ms CPU time
Warning::
https://www.jci.org/: 1421ms CPU time
Warning::
Unattributable: 1175ms CPU time
Warning::
https://www.jci.org/assets/application-27f18b5fe3b...: 765ms CPU time
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 721ms CPU time
Warning::
Third-party scripts: 7416ms (100% of total)

Main Thread Breakdown

Script Evaluation 56% Other 16% Style & Layout 10% Script Parsing & Compilation 7% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js1792ms1607ms119ms3rd
https://www.jci.org/1421ms7ms4ms3rd
Unattributable1175ms55ms0ms3rd
https://www.jci.org/assets/application-27f18b5fe3b7302e5b3e3c6d7cf9bb3f54759fad32679209f5aef429b89f3aef.js765ms469ms211ms3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604220101/pubads_impl.js?cb=31098035721ms603ms77ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WTNK8H9438ms372ms60ms3rd
https://www.googletagmanager.com/gtag/js?id=G-2VCKF2JS2B&cx=c&_slc=1422ms348ms69ms3rd
https://www.google-analytics.com/analytics.js195ms160ms7ms3rd
https://embed.altmetric.com/assets/altmetric_badges-c21a2f91e3e5dbe0f15b5dce6a35bc21b7dc4a409ec52afb5b3074a91a507968.js126ms100ms13ms3rd
https://www.googletagservices.com/tag/js/gpt.js105ms90ms15ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
64 scripts, 1003 KB unused
FIX
64 scripts, 1003 KB unused
Warning::
https://www.jci.org/assets/application-27f18b5fe3b...: 285 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 156 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 156 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 156 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 111 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1003 KB
1003 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.jci.org/assets/application-27f18b5fe3b7302e5b3e3c6d7cf9bb3f54759fad32679209f5aef429b89f3aef.js348 KB285 KB (82%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB156 KB (43%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB156 KB (43%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB156 KB (43%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604220101/pubads_impl.js?cb=31098035188 KB111 KB (59%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-2VCKF2JS2B&cx=c&_slc=1178 KB72 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WTNK8H9142 KB66 KB (47%)✓3rd
https://api.altmetric.com/v1/internal-556fdf0f/doi/10.1172/jci194207?callback=_altmetric.embed_callback&domain=www.jci.org&cache_until=23-220 KB—✓3rd
https://api.altmetric.com/v1/internal-556fdf0f/doi/10.1172/jci198730?callback=_altmetric.embed_callback&domain=www.jci.org&cache_until=23-220 KB—✓3rd
https://www.googletagservices.com/tag/js/gpt.js34 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

F
Page Weight Inventory
Action
158 resources · 3.4 MB · 1003 KB savings available
FIX
158 resources · 3.4 MB · 1003 KB savings available
Warning::
Page weight 2.4 MB over 1MB target
Got: 3.4 MB Expected: ≤ 1 MB
Info::
~1003 KB of savings available
Warning::
157 third-party resources (100% of weight)
Info::
4 resources over 200KB
158 resources · 3.4 MiB · 157 third-party 2.4 MiB over 1MB target
JavaScript 73% · 2.5 MiB
Image 9% · 300.1 KiB
Font 6% · 224.4 KiB
CSS 6% · 216.0 KiB
Document 4% · 155.6 KiB
Other 1% · 40.0 KiB

~1002.7 KiB of savings available

Remove unused JavaScript: 1002.7 KiB
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
58 images, 0 KB saveable
REVIEW
58 images, 0 KB saveable
Warning::
https://www.jci.org/assets/social/facebook-round-b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.jci.org/assets/social/twitter-round-bl... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.jci.org/assets/social/rss-round-color-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.jci.org/assets/common/jci-only-white-6... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://dm5migu4zj3pb.cloudfront.net/volumes/136/8... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
58 images 300 KB
0 oversized -0 KB
58 legacy format
5 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

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+
Font Loading
5 fonts (224 KB)
PASS
5 fonts (224 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

224 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 3.8 s LCP 8.3 shttps://dm5migu4zj3pb.cloudfront.net/fonts/klavika/woff/KlavikaWebBasicBold.woffKlavikaWebBasicBold.woff https://dm5migu4zj3pb.cloudfront.net/fonts/klavika/woff/KlavikaWebBasicBold.woff — 38.8 KiB — 362 ms — font-display: swaphttps://www.jci.org/assets/fontawesome-webfont-fa79d127baca4558a0b973f5f514b90fc5ef43314c41095f5cb285ffaa0a4029.woff2fontawesome-webfont-fa7... https://www.jci.org/assets/fontawesome-webfont-fa79d127baca4558a0b973f5f514b90fc5ef43314c41095f5cb285ffaa0a4029.woff2 — 75.6 KiB — 142 ms — font-display: swaphttps://dm5migu4zj3pb.cloudfront.net/fonts/klavika/woff/KlavikaWebBasicRegular.woffKlavikaWebBasicRegular.... https://dm5migu4zj3pb.cloudfront.net/fonts/klavika/woff/KlavikaWebBasicRegular.woff — 42.2 KiB — 438 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 98 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 14 ms — font-display: swap
KlavikaWebBasicBold.woff woff swap
Size 39 KB
Load time 362 ms
Start 3.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fontawesome-webfont-fa7... woff2 swap
Size 76 KB
Load time 142 ms
Start 3.5 s
Risk FOUT — text flashes from fallback to web font
KlavikaWebBasicRegular.... woff swap
Size 42 KB
Load time 438 ms
Start 3.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 98 ms
Start 3.9 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 14 ms
Start 4.9 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)

Fixing the unchecked items could save ~24 KB and ~48 ms

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+
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
158 requests over 7437ms
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 FCP 3.8 s LCP 8.3 shttps://jci.org// https://jci.org/ — 301 — 242 B — 391 ms — http/1.1https://www.jci.org/www.jci.org/ https://www.jci.org/ — 200 — 42.3 KiB — 2.8 s — http/1.1https://s7.addthis.com/js/300/addthis_widget.jss7.addthis.com/js/300/addthis_widge... https://s7.addthis.com/js/300/addthis_widget.js — -1 — 0 B — 103 ms — https://www.jci.org/assets/application-4e3473ed7442aa1dc35d11f58ed4edfbd690fa57a3eb3a1daca0cd68dc7fb1e0.csswww.jci.org/assets/application-4e34... https://www.jci.org/assets/application-4e3473ed7442aa1dc35d11f58ed4edfbd690fa57a3eb3a1daca0cd68dc7fb1e0.css — 200 — 47.2 KiB — 388 ms — http/1.1https://www.jci.org/assets/ie8/application-c9c1df9dc6f969fb6db3e6e1316b9ac163cdd7a9a2bd67746820c5d31a80258f.csswww.jci.org/assets/ie8/application-... https://www.jci.org/assets/ie8/application-c9c1df9dc6f969fb6db3e6e1316b9ac163cdd7a9a2bd67746820c5d31a80258f.css — 200 — 21.4 KiB — 538 ms — http/1.1https://www.jci.org/assets/ie8/ie8-head-e4cc6664a4e806f330a789c9756cfe50f1bb936ea97fe6e2dde7db04b3daa038.jswww.jci.org/assets/ie8/ie8-head-e4c... https://www.jci.org/assets/ie8/ie8-head-e4cc6664a4e806f330a789c9756cfe50f1bb936ea97fe6e2dde7db04b3daa038.js — 200 — 13.9 KiB — 540 ms — http/1.1https://www.jci.org/assets/vendor/modernizr-2f68aa04c7424c280c5bc9db8b68f7f6ff70bcd38254c5b89383eac8e89b1781.jswww.jci.org/assets/vendor/modernizr... https://www.jci.org/assets/vendor/modernizr-2f68aa04c7424c280c5bc9db8b68f7f6ff70bcd38254c5b89383eac8e89b1781.js — 200 — 4.7 KiB — 415 ms — http/1.1https://www.jci.org/assets/application-27f18b5fe3b7302e5b3e3c6d7cf9bb3f54759fad32679209f5aef429b89f3aef.jswww.jci.org/assets/application-27f1... https://www.jci.org/assets/application-27f18b5fe3b7302e5b3e3c6d7cf9bb3f54759fad32679209f5aef429b89f3aef.js — 200 — 347.9 KiB — 944 ms — http/1.1https://www.jci.org/assets/ie8/application-8c033a599105d459c98ea08bf9ef15e25d3fed26e913e4a8de4a5101d04025fd.jswww.jci.org/assets/ie8/application-... https://www.jci.org/assets/ie8/application-8c033a599105d459c98ea08bf9ef15e25d3fed26e913e4a8de4a5101d04025fd.js — 200 — 62.1 KiB — 678 ms — http/1.1https://d1bxh8uas1mnw7.cloudfront.net/assets/embed.jsd1bxh8uas1mnw7.cloudfront.net/asset... https://d1bxh8uas1mnw7.cloudfront.net/assets/embed.js — 200 — 1.0 KiB — 36 ms — h2https://www.jci.org/assets/ie8/ie8-1af1fadfa0df4a7f5fcf8fc444742398e0579e1d8aede97903d74bad8167eb5f.jswww.jci.org/assets/ie8/ie8-1af1fadf... https://www.jci.org/assets/ie8/ie8-1af1fadfa0df4a7f5fcf8fc444742398e0579e1d8aede97903d74bad8167eb5f.js — 200 — 1.5 KiB — 517 ms — http/1.1https://www.google.com/recaptcha/enterprise.js?render=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9ywww.google.com/recaptcha/enterprise... https://www.google.com/recaptcha/enterprise.js?render=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9y — 200 — 1.1 KiB — 152 ms — h3https://www.jci.org/assets/common/jci-spelled-out-white-on-transparent.20160208-958617d51a205b239bcef41eae5703962aee0ae2fcc9fbda0237e635a09ac7f3.pngwww.jci.org/assets/common/jci-spell... https://www.jci.org/assets/common/jci-spelled-out-white-on-transparent.20160208-958617d51a205b239bcef41eae5703962aee0ae2fcc9fbda0237e635a09ac7f3.png — 200 — 16.2 KiB — 133 ms — http/1.1https://dm5migu4zj3pb.cloudfront.net/volumes/136/8/136-8-cover.jpgdm5migu4zj3pb.cloudfront.net/volume... https://dm5migu4zj3pb.cloudfront.net/volumes/136/8/136-8-cover.jpg — 200 — 33.7 KiB — 420 ms — http/1.1https://dm5migu4zj3pb.cloudfront.net/manuscripts/199000/199850/small/JCI199850.f1.gifdm5migu4zj3pb.cloudfront.net/manusc... https://dm5migu4zj3pb.cloudfront.net/manuscripts/199000/199850/small/JCI199850.f1.gif — 200 — 6.8 KiB — 399 ms — http/1.1https://dm5migu4zj3pb.cloudfront.net/manuscripts/205000/205029/small/JCI205029.f1.gifdm5migu4zj3pb.cloudfront.net/manusc... 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https://www.google-analytics.com/g/collect?v=2&tid=G-2VCKF2JS2B&gtm=45je64k1v9139027874za20g&_p=1776900633665&gcd=13l3l3l3l2l1&npa=0&dma=0&_eu=ABgIAAQ&are=1&cid=2138132827.1776900634&frm=0&pscdl=noapi&rcb=12&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=2&tag_exp=0~115938466~115938469~117266400~117512543&dl=https%3A%2F%2Fwww.jci.org%2F&dt=JCI%20-%20Welcome&cu=USD&sid=1776900634&sct=1&seg=0&_tu=wAQ&en=additional_page_after_home&_c=1&gap.uat=0~115616986~115938466~115938468~117266400&ep.ua_dimension_1=false&epn.value=0&_et=6&tfd=5353 — 204 — 20 B — 61 ms — h3https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.htmlep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2/254/runner.html — 200 — 5.8 KiB — 66 ms — h2https://www.google.com/recaptcha/api2/aframewww.google.com/recaptcha/api2/afram... https://www.google.com/recaptcha/api2/aframe — 200 — 570 B — 69 ms — h3https://s7.addthis.com/js/300/addthis_widget.jss7.addthis.com/js/300/addthis_widge... https://s7.addthis.com/js/300/addthis_widget.js — -1 — 0 B — 97 ms — https://d1bxh8uas1mnw7.cloudfront.net/assets/embed.jsd1bxh8uas1mnw7.cloudfront.net/asset... https://d1bxh8uas1mnw7.cloudfront.net/assets/embed.js — 304 — 305 B — 7 ms — h2https://pagead2.googlesyndication.com/bg/gHgVpHNo6dn0XHhe-kL49krin5JQn9VQtx09w0rxLvA.jspagead2.googlesyndication.com/bg/gH... https://pagead2.googlesyndication.com/bg/gHgVpHNo6dn0XHhe-kL49krin5JQn9VQtx09w0rxLvA.js — 200 — 21.7 KiB — 76 ms — h3https://pagead2.googlesyndication.com/pagead/sodar?id=sodar2&v=254&li=gpt_m202604220101&jk=4971059105682961&rc=nullpagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/sodar?id=sodar2&v=254&li=gpt_m202604220101&jk=4971059105682961&rc=null — 204 — 17 B — 103 ms — h3https://ep2.adtrafficquality.google/generate_204?wi6ruQep2.adtrafficquality.google/generat... https://ep2.adtrafficquality.google/generate_204?wi6ruQ — 204 — 40 B — 5 ms — h2https://www.google.com/recaptcha/enterprise/reload?k=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9ywww.google.com/recaptcha/enterprise... https://www.google.com/recaptcha/enterprise/reload?k=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9y — 200 — 2.2 KiB — 106 ms — h3https://www.google.com/recaptcha/enterprise/clr?k=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9ywww.google.com/recaptcha/enterprise... https://www.google.com/recaptcha/enterprise/clr?k=6LdqSIwsAAAAAMaqy5uLiYS-EPIhRnFwvbhTZS9y — 200 — 16 B — 132 ms — h3https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=gpt_m202604220101&jk=4971059105682961&bg=!ubqlutjNAAa1ilLUlYo7AEcBe5WfONJs5613HS1wAmKXrB2v6jPQLW3Kj8A8jsm5ZrzlMLdhj6h55R2BcJC75J8oTbEVSFyVaxXxGWNVVY_pwyixedBWPAIAAAB6UgAAAAZoAQd-ADY-nu6JzVldu_7g4eSbiNJ9P1EArISxANi0LeQJ2iAlEjRLbjqoqi18qFge63idtyqPDGfP6ogKADkUsBHamLghrMZyqkDHu6XUzDJGsLj-SJ-NDXpxhiYDc0UjGicGM-5s3O0-bOfArJIrEQdFhPteFByZAqaxS3Cxvt6cO7npHwCbh6yR__C91CyvPOJKiExfoHmElW2Vot1SKvnTBGoby6AUQvLk1qA7nN7xq_lpikc2fbmzFDUB3Il3KtTtSWLQVDfut4eWfSD1IVC1JQfBJLYOeRlncp7AaWDzGaba9UNtK0vtOHVUSI6gkQOeET4ZPbPtHpbU2dgqQOtS0K4mvPHtQY7FHlQgIyruR4nC7PwK2-301V2tSDXYkTpSuI6JXfM-QniFnJHNzGpU-zUvXDcRpBE_L29Vgu88VxtaVDuEekCiMmDUnuYYwej7SonKkb3TIPXpSOGE4S6HAD23glLpyQAw3R-ieEcu9iA1zltuZf5AyzvD1JF1eoc8ZB5mfyT8ri7MNHUy-Z-OnxUQPWcEQa7aE_mycDTamSa55-pD4EV7gPHBphPY0kcttDEg2H_pHO9RBL9RGIrC_QeCH1lGP9aTYnA0zFhsKwojE5GSRfFC7zfauUDWJwXs1hL88ROhqCOsOow1igzO279JKumK7DEsFPTj2HUXPQBP1k1qWWe4G1WqbHudJCrJ4cPYuF9Zx-k-O8I4K8211L1g76YQo6ONNm9gYfqslnM6clh2PWc_1BjSmbmjnW8MJYwnH2v4yYP7qVRZWw6Ai0ph4Jp_Ay8wrmYLXklRo-zuVrSVZ7BZgTeTRdeFwyhoUNfSTqE24xyGgSON59j2GCfL6VVRnA15lRBpJ4XFSXeKJr3JvEYEHF4A2qQMHdtx42hT7e6K1feajKBY9bY75MhrsHQISSGtm_Hh3vXWV5_TiJQDhfE0RYKRF0iVErIYh1vO9upsuCLvKzamxwqvCUf7e-m9NJoViWQK1_2zU2p5w0ksBupzd51k8foJxdAjsGoYHD95hi-ilxWzcT56SJmaqeE2UedBCG3Viyoep1.adtrafficquality.google/pagead/... https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=gpt_m202604220101&jk=4971059105682961&bg=!ubqlutjNAAa1ilLUlYo7AEcBe5WfONJs5613HS1wAmKXrB2v6jPQLW3Kj8A8jsm5ZrzlMLdhj6h55R2BcJC75J8oTbEVSFyVaxXxGWNVVY_pwyixedBWPAIAAAB6UgAAAAZoAQd-ADY-nu6JzVldu_7g4eSbiNJ9P1EArISxANi0LeQJ2iAlEjRLbjqoqi18qFge63idtyqPDGfP6ogKADkUsBHamLghrMZyqkDHu6XUzDJGsLj-SJ-NDXpxhiYDc0UjGicGM-5s3O0-bOfArJIrEQdFhPteFByZAqaxS3Cxvt6cO7npHwCbh6yR__C91CyvPOJKiExfoHmElW2Vot1SKvnTBGoby6AUQvLk1qA7nN7xq_lpikc2fbmzFDUB3Il3KtTtSWLQVDfut4eWfSD1IVC1JQfBJLYOeRlncp7AaWDzGaba9UNtK0vtOHVUSI6gkQOeET4ZPbPtHpbU2dgqQOtS0K4mvPHtQY7FHlQgIyruR4nC7PwK2-301V2tSDXYkTpSuI6JXfM-QniFnJHNzGpU-zUvXDcRpBE_L29Vgu88VxtaVDuEekCiMmDUnuYYwej7SonKkb3TIPXpSOGE4S6HAD23glLpyQAw3R-ieEcu9iA1zltuZf5AyzvD1JF1eoc8ZB5mfyT8ri7MNHUy-Z-OnxUQPWcEQa7aE_mycDTamSa55-pD4EV7gPHBphPY0kcttDEg2H_pHO9RBL9RGIrC_QeCH1lGP9aTYnA0zFhsKwojE5GSRfFC7zfauUDWJwXs1hL88ROhqCOsOow1igzO279JKumK7DEsFPTj2HUXPQBP1k1qWWe4G1WqbHudJCrJ4cPYuF9Zx-k-O8I4K8211L1g76YQo6ONNm9gYfqslnM6clh2PWc_1BjSmbmjnW8MJYwnH2v4yYP7qVRZWw6Ai0ph4Jp_Ay8wrmYLXklRo-zuVrSVZ7BZgTeTRdeFwyhoUNfSTqE24xyGgSON59j2GCfL6VVRnA15lRBpJ4XFSXeKJr3JvEYEHF4A2qQMHdtx42hT7e6K1feajKBY9bY75MhrsHQISSGtm_Hh3vXWV5_TiJQDhfE0RYKRF0iVErIYh1vO9upsuCLvKzamxwqvCUf7e-m9NJoViWQK1_2zU2p5w0ksBupzd51k8foJxdAjsGoYHD95hi-ilxWzcT56SJmaqeE2UedBCG3Viyo — 204 — 17 B — 116 ms — h3https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 67 ms — h3
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 7416ms · 997KB · $98/mo
www.gstatic.com
Other
Costly
Execution 1792ms
Transfer 0 KB
Unused 43%
Monthly Cost $24/mo
www.jci.org
Other
Costly
Execution 1421ms
Transfer 42 KB
Monthly Cost $19/mo
Unattributable
Other
Costly
Execution 1175ms
Transfer 0 KB
Monthly Cost $16/mo
www.jci.org
Other
Costly
Execution 765ms
Transfer 348 KB
Unused 82%
Monthly Cost $10/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 721ms
Transfer 188 KB
Unused 59%
Monthly Cost $10/mo
Google Tag Manager
Tag Manager
Costly
Execution 438ms
Transfer 142 KB
Unused 47%
Monthly Cost $6/mo
Google Tag Manager
Tag Manager
Costly
Execution 422ms
Transfer 178 KB
Unused 41%
Monthly Cost $6/mo
Google Analytics
Analytics
Optional
Execution 195ms
Transfer 21 KB
Monthly Cost $3/mo
embed.altmetric.com
Other
Optional
Execution 126ms
Transfer 31 KB
Monthly Cost $2/mo
www.googletagservices.com
Other
Optional
Execution 105ms
Transfer 34 KB
Monthly Cost $1/mo
api.altmetric.com
Other
Optional
Execution 101ms
Transfer 1 KB
Monthly Cost $1/mo
www.jci.org
Other
Optional
Execution 98ms
Transfer 5 KB
Monthly Cost $1/mo
ep2.adtrafficquality.google
Other
Optional
Execution 57ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 1792ms and costs ~$24/month
  • www.jci.org adds 1421ms and costs ~$19/month
  • Unattributable adds 1175ms and costs ~$16/month
  • www.jci.org adds 765ms and costs ~$10/month
  • securepubads.g.doubleclick.net adds 721ms and costs ~$10/month
  • Google Tag Manager adds 438ms and costs ~$6/month
  • Google Tag Manager adds 422ms and costs ~$6/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

www.gstatic.com takes 1792ms 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.jci.org takes 1421ms 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 1175ms 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.jci.org takes 765ms 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

82% of www.jci.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

securepubads.g.doubleclick.net takes 721ms 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

59% of securepubads.g.doubleclick.net'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 438ms 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

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

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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