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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
48
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.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
77
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.

899 ms

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

4.05 s

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

64 ms

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

1.118

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

2.31 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.

6.49 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
6 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
7.2 MB transferred, 94 requests
FIX
7.2 MB transferred, 94 requests
Critical::
Page weighs 9.4 MB (7.2 MB transferred)
Warning::
Images are 2.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.9 MB
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::
CSS is 659 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 659 KB
Info::
Fonts are 425 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 425 KB
Info::
94 HTTP requests
Info::
Estimated 1.5 g CO2 per page load
7.2 MB / 2.4 MB budget
7.2 MB transferred
94 requests
1.5 g CO2 per page load
Images 2.9 MiB 40%
JavaScript 2.5 MiB 35%
CSS 659.3 KiB 9%
Other 474.4 KiB 6%
Fonts 425.3 KiB 6%
HTML 272.0 KiB 4%
Other 28.8 KiB 0%
Other 157 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

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

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

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 (7.2 MiB of 7.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
24 scripts, 1.6 MB unused
FIX
24 scripts, 1.6 MB unused
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/w...: 469 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/j...: 415 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/j...: unminified — 287 KB could be saved
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/j...: 188 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/j...: unminified — 86 KB could be saved
Warning::
https://redcap.chop.edu/redcap_v16.1.4/Resources/j...: 157 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.chop.edu/themes/custom/outline_fronten...: 117 KB unused (29%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.6 MB
1590 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/js/bundle.js?1772112072674 KB469 KB (70%)✓3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/js/Libraries/Chart.bundle.min.js?1772112071551 KB415 KB (75%)✗3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/js/base.js?1772112071246 KB188 KB (77%)✗3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/js/DataEntrySurveyCommon.js?1772112071207 KB157 KB (76%)✗3rd
https://www.chop.edu/themes/custom/outline_frontend/dist/outline.js?tcw8c1404 KB117 KB (29%)✓3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/js/Libraries/bundle.js?1772112071110 KB75 KB (69%)✗3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/js/bootstrap.min.js?177211207260 KB44 KB (74%)✓3rd
https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/js/moment.min.js?177211207258 KB43 KB (74%)✓3rd
https://chopedu.containers.piwik.pro/49ada007-8244-4f11-b2b8-08d2d0e07136.js77 KB32 KB (42%)✓3rd
https://www.chop.edu/sites/default/files/js/js_xA2-WbXWdsJiVbl3foNnVNkjj1PJdaPQ3755G6nSYFM.js?scope=footer&delta=0&language=en&theme=outline_frontend&include=eJx1T0EOwyAM-xCIJ0UhpC0qkCqBSf392Lr1MGk327EThzY5AAtrDzShf0PzJK1z6-6lAYlyWESrtxFrNsvSrolyIjxgYU4RaQ80rEv9lSEWod0l7FjwZA2RN3xkUXPSuOsMzRuyZ76cua3h4v7LnYxecmNIbHltYKd1ruFeCcew7Y9pLRKxALZZWWEaZqFPgTux6PvhFK7oE_YLbsk40 KB29 KB (73%)✓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
94 resources · 7.2 MB · 1.6 MB savings available
FIX
94 resources · 7.2 MB · 1.6 MB savings available
Warning::
Page weight 6.2 MB over 1MB target
Got: 7.2 MB Expected: ≤ 1 MB
Info::
~1.6 MB of savings available
Warning::
93 third-party resources (100% of weight)
Info::
14 resources over 200KB
94 resources · 7.2 MiB · 93 third-party 6.2 MiB over 1MB target
JavaScript 41% · 2.9 MiB
Image 41% · 2.9 MiB
CSS 9% · 659.3 KiB
Font 6% · 425.3 KiB
Document 4% · 272.0 KiB
Other 0% · 7.8 KiB

~1.6 MiB of savings available

Remove unused JavaScript: 1.6 MiB
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
JS Execution Cost
653ms total JS execution
REVIEW
653ms total JS execution
Info::
https://redcap.chop.edu/redcap_v16.1.4/Resources/w...: 247ms CPU time
Info::
https://www.chop.edu/themes/custom/outline_fronten...: 180ms CPU time
Info::
Unattributable: 116ms CPU time
Info::
https://www.chop.edu/: 109ms CPU time
Warning::
Third-party scripts: 653ms (100% of total)

Main Thread Breakdown

Script Evaluation 49% Other 18% Style & Layout 12% Script Parsing & Compilation 11% Parse HTML & CSS 9%
ScriptTotalScriptingParse/CompileParty
https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/js/bundle.js?1772112072247ms196ms47ms3rd
https://www.chop.edu/themes/custom/outline_frontend/dist/outline.js?tcw8c1180ms127ms1ms3rd
Unattributable116ms2ms0ms3rd
https://www.chop.edu/109ms3ms0ms3rd
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
Image Optimization
17 images, 0 KB saveable
PASS
17 images, 0 KB saveable
Info::
All images are well-optimized
17 images 2.9 MB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
12 fonts (425 KB)
PASS
12 fonts (425 KB)
Info::
12 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

12

425 KB total

Render-blocking

0

of 12

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 FCP 899 ms LCP 4.0 shttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLight.woff2TPRubrik-ExtraLight.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLight.woff2 — 30.6 KiB — 27 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLightItalic.woff2TPRubrik-ExtraLightItal... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLightItalic.woff2 — 33.3 KiB — 27 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Light.woff2TPRubrik-Light.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Light.woff2 — 31.7 KiB — 22 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-LightItalic.woff2TPRubrik-LightItalic.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-LightItalic.woff2 — 36.4 KiB — 20 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Regular.woff2TPRubrik-Regular.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Regular.woff2 — 36.0 KiB — 18 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-RegularItalic.woff2TPRubrik-RegularItalic.... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-RegularItalic.woff2 — 36.6 KiB — 15 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Medium.woff2TPRubrik-Medium.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Medium.woff2 — 36.2 KiB — 38 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-MediumItalic.woff2TPRubrik-MediumItalic.w... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-MediumItalic.woff2 — 37.3 KiB — 33 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBold.woff2TPRubrik-SemiBold.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBold.woff2 — 36.3 KiB — 29 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBoldItalic.woff2TPRubrik-SemiBoldItalic... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBoldItalic.woff2 — 37.2 KiB — 31 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Bold.woff2TPRubrik-Bold.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Bold.woff2 — 36.5 KiB — 38 ms — font-display: swaphttps://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-BoldItalic.woff2TPRubrik-BoldItalic.woff2 https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-BoldItalic.woff2 — 37.2 KiB — 38 ms — font-display: swap
TPRubrik-ExtraLight.woff2 woff2 swap
Size 31 KB
Load time 27 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-ExtraLightItal... woff2 swap
Size 33 KB
Load time 27 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-Light.woff2 woff2 swap
Size 32 KB
Load time 22 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-LightItalic.woff2 woff2 swap
Size 36 KB
Load time 20 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-Regular.woff2 woff2 swap
Size 36 KB
Load time 18 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-RegularItalic.... woff2 swap
Size 37 KB
Load time 15 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-Medium.woff2 woff2 swap
Size 36 KB
Load time 38 ms
Start 27 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-MediumItalic.w... woff2 swap
Size 37 KB
Load time 33 ms
Start 27 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-SemiBold.woff2 woff2 swap
Size 36 KB
Load time 29 ms
Start 27 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-SemiBoldItalic... woff2 swap
Size 37 KB
Load time 31 ms
Start 27 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-Bold.woff2 woff2 swap
Size 36 KB
Load time 38 ms
Start 28 ms
Risk FOUT — text flashes from fallback to web font
TPRubrik-BoldItalic.woff2 woff2 swap
Size 37 KB
Load time 38 ms
Start 28 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
Network Waterfall
94 requests over 2753ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 899 ms LCP 4.0 shttps://chop.edu// https://chop.edu/ — 301 — 204 B — 5 ms — h2https://www.chop.edu/www.chop.edu/ https://www.chop.edu/ — 200 — 28.8 KiB — 8 ms — h2https://cdn.cookielaw.org/consent/bc6b0ec7-79ce-4cf0-9757-459f1eedca08/OtAutoBlock.jscdn.cookielaw.org/consent/bc6b0ec7-... https://cdn.cookielaw.org/consent/bc6b0ec7-79ce-4cf0-9757-459f1eedca08/OtAutoBlock.js — -1 — 0 B — 131 ms — https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — -1 — 0 B — 131 ms — https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLight.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLight.woff2 — 200 — 30.6 KiB — 27 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLightItalic.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-ExtraLightItalic.woff2 — 200 — 33.3 KiB — 27 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Light.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Light.woff2 — 200 — 31.7 KiB — 22 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-LightItalic.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-LightItalic.woff2 — 200 — 36.4 KiB — 20 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Regular.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Regular.woff2 — 200 — 36.0 KiB — 18 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-RegularItalic.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-RegularItalic.woff2 — 200 — 36.6 KiB — 15 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Medium.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Medium.woff2 — 200 — 36.2 KiB — 38 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-MediumItalic.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-MediumItalic.woff2 — 200 — 37.3 KiB — 33 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBold.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBold.woff2 — 200 — 36.3 KiB — 29 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBoldItalic.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-SemiBoldItalic.woff2 — 200 — 37.2 KiB — 31 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Bold.woff2www.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-Bold.woff2 — 200 — 36.5 KiB — 38 ms — h2https://www.chop.edu/themes/custom/outline_frontend/dist/assets/fonts/rubrik/TPRubrik-BoldItalic.woff2www.chop.edu/themes/custom/outline_... 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https://api.ipify.org/?format=json — 200 — 157 B — 136 ms — h2https://redcap.chop.edu/redcap_v16.1.4/Resources/images/datetime.pngredcap.chop.edu/redcap_v16.1.4/Reso... https://redcap.chop.edu/redcap_v16.1.4/Resources/images/datetime.png — 200 — 2.1 KiB — 105 ms — h2https://www.chop.edu/themes/custom/outline_frontend/favicon.icowww.chop.edu/themes/custom/outline_... https://www.chop.edu/themes/custom/outline_frontend/favicon.ico — 200 — 964 B — 5 ms — h2https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/css/tinymce/tinymce.min.jsredcap.chop.edu/redcap_v16.1.4/Reso... https://redcap.chop.edu/redcap_v16.1.4/Resources/webpack/css/tinymce/tinymce.min.js — 200 — 467.0 KiB — 117 ms — h2
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 653ms · 1106KB · €3/mo
redcap.chop.edu
Other
Costly
Execution 247ms
Transfer 674 KB
Unused 70%
Monthly Cost €1/mo
www.chop.edu
Other
Optional
Execution 180ms
Transfer 404 KB
Unused 29%
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 116ms
Transfer 0 KB
Monthly Cost €1/mo
www.chop.edu
Other
Optional
Execution 109ms
Transfer 29 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • redcap.chop.edu adds 247ms 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

redcap.chop.edu takes 247ms 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

70% of redcap.chop.edu'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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