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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
3
REVIEW
5
PASS
7
INFO
2

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

Mobile Desktop
55
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.

6.50 s

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

8.01 s

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

231 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.

6.50 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.

10.12 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
7 PASS 5 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.7 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
30 resources · 1.7 MB · 231 KB savings available
FIX
30 resources · 1.7 MB · 231 KB savings available
Warning::
Page weight 713 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~231 KB of savings available
Warning::
29 third-party resources (100% of weight)
Info::
2 resources over 200KB
30 resources · 1.7 MiB · 29 third-party 712.7 KiB over 1MB target
JavaScript 28% · 486.8 KiB
Image 24% · 409.5 KiB
Font 22% · 382.3 KiB
CSS 20% · 355.3 KiB
Document 6% · 101.7 KiB
Other 0% · 1.1 KiB

~231.3 KiB of savings available

Remove unused JavaScript: 231.3 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
Page Weight Budget
Action
1.7 MB transferred, 30 requests
REVIEW
1.7 MB transferred, 30 requests
Info::
Page weighs 2.4 MB (1.7 MB transferred)
Info::
Fonts are 382 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 382 KB
Info::
CSS is 355 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 355 KB
Info::
30 HTTP requests
Info::
Estimated 0.36 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
30 requests
0.36 g CO2 per page load
JavaScript 486.8 KiB 28%
Fonts 382.3 KiB 22%
Images 381.3 KiB 22%
CSS 355.3 KiB 20%
HTML 101.3 KiB 6%
Other 28.7 KiB 2%
Other 556 B 0%
Other 547 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

C
Image Optimization
Action
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://www.uky.edu/sites/default/files/styles/big... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.uky.edu/sites/default/files/styles/big... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 381 KB
0 oversized -0 KB
8 legacy format
2 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

C
JS Execution Cost
Action
1254ms total JS execution
REVIEW
1254ms total JS execution
Warning::
https://www.uky.edu/: 343ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-RS8V...: 299ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-TRB...: 256ms CPU time
Info::
Unattributable: 228ms CPU time
Info::
https://www.uky.edu/sites/default/files/js/js_44EV...: 128ms CPU time
Warning::
Third-party scripts: 1254ms (100% of total)

Main Thread Breakdown

Script Evaluation 41% Other 23% Style & Layout 18% Script Parsing & Compilation 10% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.uky.edu/343ms6ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-RS8VY27RLL&cx=c&gtm=4e64h1h1299ms240ms45ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TRBK72256ms179ms67ms3rd
Unattributable228ms6ms0ms3rd
https://www.uky.edu/sites/default/files/js/js_44EVD20UMAjS2joD5pTR0B5WV8v5AhNGzuuOL81vEjI.js?scope=footer&delta=0&language=en&theme=uky_see_theme&include=eJwtyUsOgCAQBNELOWHrbUjLdMDIDAtE4-2Nn92r1Nh0Drm2BXUajw2ri-P4qylq_3wmZEmldbpAVSoWvu-KnYx7oTEYM8To4wao6yC8128ms98ms21ms3rd
C
JS Bundles
Action
3 scripts, 231 KB unused
REVIEW
3 scripts, 231 KB unused
Warning::
https://www.uky.edu/sites/default/files/js/js_44EV...: 80 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-TRB...: 79 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-RS8V...: 71 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 231 KB
231 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.uky.edu/sites/default/files/js/js_44EVD20UMAjS2joD5pTR0B5WV8v5AhNGzuuOL81vEjI.js?scope=footer&delta=0&language=en&theme=uky_see_theme&include=eJwtyUsOgCAQBNELOWHrbUjLdMDIDAtE4-2Nn92r1Nh0Drm2BXUajw2ri-P4qylq_3wmZEmldbpAVSoWvu-KnYx7oTEYM8To4wao6yC8135 KB80 KB (60%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TRBK72178 KB79 KB (45%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-RS8VY27RLL&cx=c&gtm=4e64h1h1174 KB71 KB (41%)✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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

Source: web.dev / Lighthouse coverage

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

Green Hosting

No green hosting detected

A+
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
9 fonts (382 KB)
PASS
9 fonts (382 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

382 KB total

Render-blocking

0

of 9

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 6.5 s LCP 8.0 shttps://use.typekit.net/af/a851eb/00000000000000007735a6b4/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/a851eb/00000000000000007735a6b4/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 20.1 KiB — 29 ms — font-display: swaphttps://use.typekit.net/af/79b8d0/00000000000000007735a6a2/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3l https://use.typekit.net/af/79b8d0/00000000000000007735a6a2/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3 — 19.4 KiB — 23 ms — font-display: swaphttps://www.uky.edu/modules/uky_platform/limestone/fonts/icons-5ead906cf5.woff2icons-5ead906cf5.woff2 https://www.uky.edu/modules/uky_platform/limestone/fonts/icons-5ead906cf5.woff2 — 6.2 KiB — 315 ms — font-display: swaphttps://use.typekit.net/af/4619ac/00000000000000007735a6ac/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n8&v=3l https://use.typekit.net/af/4619ac/00000000000000007735a6ac/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n8&v=3 — 19.8 KiB — 21 ms — font-display: swaphttps://use.typekit.net/af/ed550a/00000000000000007735a69c/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/ed550a/00000000000000007735a69c/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 19.5 KiB — 23 ms — font-display: swaphttps://use.typekit.net/af/5ab2eb/00000000000000007735c741/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/5ab2eb/00000000000000007735c741/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 26.6 KiB — 19 ms — font-display: swaphttps://use.typekit.net/af/0a9c1f/0000000000000000774b978f/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/0a9c1f/0000000000000000774b978f/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 222.5 KiB — 29 ms — font-display: swaphttps://use.typekit.net/af/e39010/00000000000000007735a6b2/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i7&v=3l https://use.typekit.net/af/e39010/00000000000000007735a6b2/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i7&v=3 — 20.5 KiB — 19 ms — font-display: swaphttps://use.typekit.net/af/889bfc/00000000000000007735c752/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/889bfc/00000000000000007735c752/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 27.8 KiB — 14 ms — font-display: swap
l woff2 swap
Size 20 KB
Load time 29 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 23 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
icons-5ead906cf5.woff2 woff2 swap
Size 6 KB
Load time 315 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 20 KB
Load time 21 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 23 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 27 KB
Load time 19 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 223 KB
Load time 29 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
l woff2 swap
Size 20 KB
Load time 19 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 28 KB
Load time 14 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~111 KB and ~222 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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
—
prefetch
—

1 resource hints configured

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
30 requests over 3874ms
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 6.5 s LCP 8.0 shttps://uky.edu// https://uky.edu/ — 301 — 496 B — 505 ms — http/1.1https://www.uky.edu/www.uky.edu/ https://www.uky.edu/ — 200 — 101.3 KiB — 898 ms — http/1.1https://www.uky.edu/sites/default/files/css/css_biLuCB5Ob7BaMQkW_oVSBU1F-IQII3_3CjFDS9pcr5s.css?delta=0&language=en&theme=uky_see_theme&include=eJw1iksKgDAMBS9UzdbblJQ-tJi0i_RDb68o3QwzMJIUVksGyTJn0yqUAhtcu-NBp5TA8rtyylvm_tb0Bvh6QbGWnjCMPu5aYhM8JXwlPwwww.uky.edu/sites/default/files/css... https://www.uky.edu/sites/default/files/css/css_biLuCB5Ob7BaMQkW_oVSBU1F-IQII3_3CjFDS9pcr5s.css?delta=0&language=en&theme=uky_see_theme&include=eJw1iksKgDAMBS9UzdbblJQ-tJi0i_RDb68o3QwzMJIUVksGyTJn0yqUAhtcu-NBp5TA8rtyylvm_tb0Bvh6QbGWnjCMPu5aYhM8JXwlPw — 200 — 332.9 KiB — 1.1 s — http/1.1https://www.uky.edu/sites/default/files/css/css_FKPVk_FBLfY4rElIwtQmSw8_z_XigDxPYrZk7hH5qb0.css?delta=1&language=en&theme=uky_see_theme&include=eJw1iksKgDAMBS9UzdbblJQ-tJi0i_RDb68o3QwzMJIUVksGyTJn0yqUAhtcu-NBp5TA8rtyylvm_tb0Bvh6QbGWnjCMPu5aYhM8JXwlPwwww.uky.edu/sites/default/files/css... https://www.uky.edu/sites/default/files/css/css_FKPVk_FBLfY4rElIwtQmSw8_z_XigDxPYrZk7hH5qb0.css?delta=1&language=en&theme=uky_see_theme&include=eJw1iksKgDAMBS9UzdbblJQ-tJi0i_RDb68o3QwzMJIUVksGyTJn0yqUAhtcu-NBp5TA8rtyylvm_tb0Bvh6QbGWnjCMPu5aYhM8JXwlPw — 200 — 20.0 KiB — 502 ms — http/1.1https://www.uky.edu/sites/default/files/styles/big_3x4/public/2026-04/mobile.jpg?h=e9dc7824&itok=ICoVkW7owww.uky.edu/sites/default/files/sty... https://www.uky.edu/sites/default/files/styles/big_3x4/public/2026-04/mobile.jpg?h=e9dc7824&itok=ICoVkW7o — 200 — 99.2 KiB — 724 ms — http/1.1https://www.uky.edu/sites/default/files/styles/big_3x4/public/2026-04/uky-researcher-mobile_0.jpg?h=e9dc7824&itok=JkpYEVqIwww.uky.edu/sites/default/files/sty... https://www.uky.edu/sites/default/files/styles/big_3x4/public/2026-04/uky-researcher-mobile_0.jpg?h=e9dc7824&itok=JkpYEVqI — 200 — 70.9 KiB — 612 ms — http/1.1https://www.uky.edu/sites/default/files/styles/small_4x3/public/2025-11/ai-for-uky_1.jpg?h=167fceb1&itok=ZpoPFSTTwww.uky.edu/sites/default/files/sty... https://www.uky.edu/sites/default/files/styles/small_4x3/public/2025-11/ai-for-uky_1.jpg?h=167fceb1&itok=ZpoPFSTT — 200 — 29.4 KiB — 487 ms — http/1.1https://www.uky.edu/sites/default/files/styles/small_4x3/public/2025-05/whitaker-raven.jpg?h=167fceb1&itok=E7ZlJF0lwww.uky.edu/sites/default/files/sty... https://www.uky.edu/sites/default/files/styles/small_4x3/public/2025-05/whitaker-raven.jpg?h=167fceb1&itok=E7ZlJF0l — 200 — 27.5 KiB — 482 ms — http/1.1https://cloud.typography.com/7932236/7395812/css/fonts.csscloud.typography.com/7932236/739581... https://cloud.typography.com/7932236/7395812/css/fonts.css — 200 — 278 B — 176 ms — http/1.1https://use.typekit.net/axt6iqz.cssuse.typekit.net/axt6iqz.css https://use.typekit.net/axt6iqz.css — 200 — 2.0 KiB — 57 ms — h2https://p.typekit.net/p.css?s=1&k=axt6iqz&ht=tk&f=15498.15501.15505.15506.15507.15510.15512.25629.25632.25633.25634.25635.25636.25637.25638.26839.26840.26841.26842.28900.28901.28904.28905.44884.44887.51588.51589&a=20469250&app=typekit&e=cssp.typekit.net/p.css?s=1&k=axt6iqz&h... https://p.typekit.net/p.css?s=1&k=axt6iqz&ht=tk&f=15498.15501.15505.15506.15507.15510.15512.25629.25632.25633.25634.25635.25636.25637.25638.26839.26840.26841.26842.28900.28901.28904.28905.44884.44887.51588.51589&a=20469250&app=typekit&e=css — 200 — 172 B — 49 ms — h2https://www.uky.edu/sites/default/files/styles/small_4x3/public/2024-08/working-together.jpg?h=167fceb1&itok=KzUVKarjwww.uky.edu/sites/default/files/sty... https://www.uky.edu/sites/default/files/styles/small_4x3/public/2024-08/working-together.jpg?h=167fceb1&itok=KzUVKarj — 200 — 29.6 KiB — 500 ms — http/1.1https://www.uky.edu/sites/default/files/js/js_44EVD20UMAjS2joD5pTR0B5WV8v5AhNGzuuOL81vEjI.js?scope=footer&delta=0&language=en&theme=uky_see_theme&include=eJwtyUsOgCAQBNELOWHrbUjLdMDIDAtE4-2Nn92r1Nh0Drm2BXUajw2ri-P4qylq_3wmZEmldbpAVSoWvu-KnYx7oTEYM8To4wao6yC8www.uky.edu/sites/default/files/js/... https://www.uky.edu/sites/default/files/js/js_44EVD20UMAjS2joD5pTR0B5WV8v5AhNGzuuOL81vEjI.js?scope=footer&delta=0&language=en&theme=uky_see_theme&include=eJwtyUsOgCAQBNELOWHrbUjLdMDIDAtE4-2Nn92r1Nh0Drm2BXUajw2ri-P4qylq_3wmZEmldbpAVSoWvu-KnYx7oTEYM8To4wao6yC8 — 200 — 135.3 KiB — 1.0 s — http/1.1https://www.googletagmanager.com/gtm.js?id=GTM-TRBK72www.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-TRBK72 — 200 — 177.9 KiB — 167 ms — h2https://www.uky.edu/themes/custom/uky_see_theme/images/speckled-texture.pngwww.uky.edu/themes/custom/uky_see_t... https://www.uky.edu/themes/custom/uky_see_theme/images/speckled-texture.png — 200 — 112.7 KiB — 785 ms — http/1.1https://www.uky.edu/modules/uky_platform/limestone/images/campus-map-texture.jpgwww.uky.edu/modules/uky_platform/li... https://www.uky.edu/modules/uky_platform/limestone/images/campus-map-texture.jpg — 200 — 11.7 KiB — 444 ms — http/1.1https://use.typekit.net/af/a851eb/00000000000000007735a6b4/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3use.typekit.net/af/a851eb/000000000... https://use.typekit.net/af/a851eb/00000000000000007735a6b4/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 200 — 20.1 KiB — 29 ms — 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https://region1.analytics.google.com/g/collect?v=2&tid=G-RS8VY27RLL&gtm=45je64h1h1v874416860z871425623za20gzb71425623zd71425623&_p=1776805069325&_gaz=1&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&_eu=AAAAAGA&are=1&cid=1669983332.1776805070&frm=0&pscdl=noapi&rcb=8&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&gaf=2&_s=1&tag_exp=0~115616985~115938466~115938469~117266400~117512543&sid=1776805069&sct=1&seg=0&dl=https%3A%2F%2Fwww.uky.edu%2F&dt=Home%20%7C%20University%20of%20Kentucky&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=2683 — 204 — 547 B — 95 ms — h2https://stats.g.doubleclick.net/g/collect?v=2&tid=G-RS8VY27RLL&cid=1669983332.1776805070&gtm=45je64h1h1v874416860z871425623za20gzb71425623zd71425623&rcb=8&aip=1&dma=1&dma_cps=a&gcd=13l3lPl2l1l1&npa=1&frm=0&tag_exp=0~115616985~115938466~115938469~117266400~117512543stats.g.doubleclick.net/g/collect?v... 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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
100% of JavaScript execution is third-party
First-party Third-party 1254ms · 588KB · $17/mo
www.uky.edu
Other
Costly
Execution 343ms
Transfer 101 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 299ms
Transfer 174 KB
Unused 41%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 256ms
Transfer 178 KB
Unused 45%
Monthly Cost $3/mo
Unattributable
Other
Costly
Execution 228ms
Transfer 0 KB
Monthly Cost $3/mo
www.uky.edu
Other
Optional
Execution 128ms
Transfer 135 KB
Unused 60%
Monthly Cost $2/mo

These scripts may cost more than they're worth

  • www.uky.edu adds 343ms and costs ~$5/month
  • Google Tag Manager adds 299ms and costs ~$4/month
  • Google Tag Manager adds 256ms and costs ~$3/month
  • Unattributable adds 228ms and costs ~$3/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.uky.edu takes 343ms 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 299ms 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 256ms 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 228ms 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

60% of www.uky.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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