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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
52
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
75
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.

5.65 s

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

17.18 s

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

208 ms

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

0.046

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

14.99 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.

20.97 s

Page Load Progression

1.0 s
2.0 s
3.1 s
4.1 s
5.1 s
6.1 s
7.1 s
8.1 s
Checks
17
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
3.9 MB transferred, 106 requests
FIX
3.9 MB transferred, 106 requests
Critical::
Page weighs 7.8 MB (3.9 MB transferred)
Warning::
Images are 2.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.5 MB
Warning::
JavaScript is 764 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 764 KB
Info::
Fonts are 292 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 292 KB
Warning::
106 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.82 g CO2 per page load
3.9 MB / 2.4 MB budget
3.9 MB transferred
106 requests
0.82 g CO2 per page load
Images 2.5 MiB 63%
JavaScript 763.9 KiB 19%
Fonts 291.9 KiB 7%
CSS 199.1 KiB 5%
Other 136.2 KiB 3%
HTML 48.9 KiB 1%
Other 33.2 KiB 1%
Other 10.4 KiB 0%
Other 123 B 0%
Other 0 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

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

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 (3.9 MiB of 3.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
3669ms total JS execution
FIX
3669ms total JS execution
Warning::
https://www.uab.edu/home/: 1652ms CPU time
Warning::
Unattributable: 707ms CPU time
Warning::
https://cdn.cookielaw.org/scripttemplates/6.39.0/o...: 384ms CPU time
Info::
https://cdn.cookielaw.org/consent/660b8afe-7011-43...: 193ms CPU time
Info::
https://cse.google.com/cse.js?cx=934f5599a8cbf6f31: 140ms CPU time
Warning::
Third-party scripts: 3669ms (100% of total)

Main Thread Breakdown

Script Evaluation 29% Style & Layout 28% Other 25% Rendering 7% Parse HTML & CSS 6% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.uab.edu/home/1652ms30ms7ms3rd
Unattributable707ms95ms0ms3rd
https://cdn.cookielaw.org/scripttemplates/6.39.0/otBannerSdk.js384ms226ms50ms3rd
https://cdn.cookielaw.org/consent/660b8afe-7011-433e-b4af-a7229d2202c5/OtAutoBlock.js193ms178ms7ms3rd
https://cse.google.com/cse.js?cx=934f5599a8cbf6f31140ms122ms2ms3rd
https://kit.fontawesome.com/1243b65314.js129ms125ms2ms3rd
https://www.uab.edu/home/media/com_widgetkit/lib/uikit/dist/js/uikit.min.js97ms77ms19ms3rd
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D81ms35ms44ms3rd
https://cse.google.com/adsense/search/async-ads.js77ms57ms17ms3rd
https://www.uab.edu/home/media/vendor/jquery/js/jquery.min.js?3.7.172ms57ms12ms3rd

Showing top 10 of 12 scripts

D
Page Weight Inventory
Action
106 resources · 3.9 MB · 166 KB savings available
FIX
106 resources · 3.9 MB · 166 KB savings available
Warning::
Page weight 2.9 MB over 1MB target
Got: 3.9 MB Expected: ≤ 1 MB
Info::
~166 KB of savings available
Warning::
105 third-party resources (100% of weight)
Info::
8 resources over 200KB
106 resources · 3.9 MiB · 105 third-party 2.9 MiB over 1MB target
Image 64% · 2.5 MiB
JavaScript 19% · 763.9 KiB
Font 7% · 291.9 KiB
CSS 7% · 267.8 KiB
Other 2% · 78.0 KiB
Document 1% · 49.1 KiB

~166.1 KiB of savings available

Remove unused JavaScript: 166.1 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.

B
Image Optimization
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Warning::
https://www.uab.edu/home/images/photos/home/home-b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
22 images 2.5 MB
0 oversized -0 KB
14 legacy format
1 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

C
JS Bundles
Action
24 scripts, 166 KB unused
REVIEW
24 scripts, 166 KB unused
Warning::
https://www.google.com/cse/static/element/b33cba58...: 49 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/6.39.0/o...: 46 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.uab.edu/home/media/com_widgetkit/lib/u...: 40 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 166 KB
166 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D98 KB49 KB (50%)✓3rd
https://cdn.cookielaw.org/scripttemplates/6.39.0/otBannerSdk.js89 KB46 KB (51%)✓3rd
https://www.uab.edu/home/media/com_widgetkit/lib/uikit/dist/js/uikit.min.js51 KB40 KB (78%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://www.uab.edu/home/media/system/js/messages.min.js?9a48112 KB—✓3rd
https://cse.google.com/cse.js?cx=934f5599a8cbf6f314 KB—✓3rd
https://cdn.cookielaw.org/consent/660b8afe-7011-433e-b4af-a7229d2202c5/OtAutoBlock.js11 KB—✓3rd
https://www.uab.edu/home/media/plg_system_jcemediabox/js/jcemediabox.min.js?7d30aa8b30a57b85d658fcd54426884a17 KB—✓3rd
https://www.uab.edu/home/media/system/js/core.min.js?a3d8f84 KB—✓3rd
https://www.uab.edu/home/media/legacy/js/jquery-noconflict.min.js?504da40 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

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
26 fonts (292 KB)
PASS
26 fonts (292 KB)
Info::
26 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

26

292 KB total

Render-blocking

0

of 26

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s FCP 5.6 s LCP 17.2 shttps://use.typekit.net/af/eef83b/00000000000000003b9afb57/27/l?primer=6068fae501543f5d8bcc4c67f50f8f207102a1f29c4d994be3e2b0576ff67ab9&fvd=n4&v=3l https://use.typekit.net/af/eef83b/00000000000000003b9afb57/27/l?primer=6068fae501543f5d8bcc4c67f50f8f207102a1f29c4d994be3e2b0576ff67ab9&fvd=n4&v=3 — 13.3 KiB — 16 ms — font-display: swaphttps://use.typekit.net/af/40f7d5/00000000000000003b9afb5a/27/l?primer=6068fae501543f5d8bcc4c67f50f8f207102a1f29c4d994be3e2b0576ff67ab9&fvd=n6&v=3l https://use.typekit.net/af/40f7d5/00000000000000003b9afb5a/27/l?primer=6068fae501543f5d8bcc4c67f50f8f207102a1f29c4d994be3e2b0576ff67ab9&fvd=n6&v=3 — 13.6 KiB — 5 ms — font-display: swapdata:font/woff2;base64,d09GMk9UVE8AAA38AAkAAAAAFnwAAA22AAAVAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD…woff2;base64,d09GMk9UVE... data:font/woff2;base64,d09GMk9UVE8AAA38AAkAAAAAFnwAAA22AAAVAAAAAAAAAAAAAAAAAAAAAAAAAAAAATYCJAQGBmAD… — 3.5 KiB — 182 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.10.2.woff2pro-fa-regular-400-5.10... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.10.2.woff2 — 16.0 KiB — 39 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.11.0.woff2pro-fa-regular-400-5.11... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.11.0.woff2 — 14.0 KiB — 28 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.0.0.woff2pro-fa-brands-400-5.0.0... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.0.0.woff2 — 37.0 KiB — 57 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.14.0.woff2pro-fa-brands-400-5.14.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.14.0.woff2 — 3.3 KiB — 36 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.0.woff2pro-fa-solid-900-5.0.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.0.woff2 — 19.4 KiB — 29 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-light-300-5.0.0.woff2pro-fa-light-300-5.0.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-light-300-5.0.0.woff2 — 24.3 KiB — 31 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.10.2.woff2pro-fa-solid-900-5.10.2... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.10.2.woff2 — 13.1 KiB — 32 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.11.1.woff2pro-fa-solid-900-5.11.1... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.11.1.woff2 — 8.4 KiB — 41 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.14.0.woff2pro-fa-solid-900-5.14.0... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.14.0.woff2 — 12.4 KiB — 38 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-light-300-5.10.2.woff2pro-fa-light-300-5.10.2... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-light-300-5.10.2.woff2 — 16.9 KiB — 30 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.0.0.woff2pro-fa-regular-400-5.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-regular-400-5.0.0.woff2 — 22.9 KiB — 53 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.8.2.woff2pro-fa-brands-400-5.8.2... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.8.2.woff2 — 2.5 KiB — 41 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.11.woff2pro-fa-solid-900-5.0.11... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.11.woff2 — 3.2 KiB — 39 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.10.1.woff2pro-fa-solid-900-5.10.1... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.10.1.woff2 — 7.8 KiB — 38 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.6.0.woff2pro-fa-brands-400-5.6.0... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.6.0.woff2 — 3.1 KiB — 42 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.11.0.woff2pro-fa-solid-900-5.11.0... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.11.0.woff2 — 11.9 KiB — 45 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.9.woff2pro-fa-solid-900-5.0.9.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.9.woff2 — 6.1 KiB — 61 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.2.0.woff2pro-fa-solid-900-5.2.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.2.0.woff2 — 9.0 KiB — 67 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.3.0.woff2pro-fa-solid-900-5.3.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.3.0.woff2 — 8.9 KiB — 56 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.1.0.woff2pro-fa-solid-900-5.1.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.1.0.woff2 — 7.3 KiB — 62 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.7.woff2pro-fa-solid-900-5.0.7.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.0.7.woff2 — 4.3 KiB — 41 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.7.0.woff2pro-fa-solid-900-5.7.0.... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-solid-900-5.7.0.woff2 — 8.7 KiB — 57 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.8.1.woff2pro-fa-brands-400-5.8.1... https://ka-p.fontawesome.com/releases/v5.15.4/webfonts/pro-fa-brands-400-5.8.1.woff2 — 1005 B — 44 ms — font-display: swap
l woff2 swap
Size 13 KB
Load time 16 ms
Start 6.9 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 14 KB
Load time 5 ms
Start 7.0 s
Risk FOUT — text flashes from fallback to web font
woff2;base64,d09GMk9UVE... woff2 swap
Size 3 KB
Load time 182 ms
Start 7.1 s
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-5.10... woff2 swap
Size 16 KB
Load time 39 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-5.11... woff2 swap
Size 14 KB
Load time 28 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-5.0.0... woff2 swap
Size 37 KB
Load time 57 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-5.14.... woff2 swap
Size 3 KB
Load time 36 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.0.0.... woff2 swap
Size 19 KB
Load time 29 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-light-300-5.0.0.... woff2 swap
Size 24 KB
Load time 31 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.10.2... woff2 swap
Size 13 KB
Load time 32 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.11.1... woff2 swap
Size 8 KB
Load time 41 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.14.0... woff2 swap
Size 12 KB
Load time 38 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-light-300-5.10.2... woff2 swap
Size 17 KB
Load time 30 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-5.0.... woff2 swap
Size 23 KB
Load time 53 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-5.8.2... woff2 swap
Size 3 KB
Load time 41 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.0.11... woff2 swap
Size 3 KB
Load time 39 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.10.1... woff2 swap
Size 8 KB
Load time 38 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-5.6.0... woff2 swap
Size 3 KB
Load time 42 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.11.0... woff2 swap
Size 12 KB
Load time 45 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.0.9.... woff2 swap
Size 6 KB
Load time 61 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.2.0.... woff2 swap
Size 9 KB
Load time 67 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.3.0.... woff2 swap
Size 9 KB
Load time 56 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.1.0.... woff2 swap
Size 7 KB
Load time 62 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.0.7.... woff2 swap
Size 4 KB
Load time 41 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-5.7.0.... woff2 swap
Size 9 KB
Load time 57 ms
Start 7.2 s
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-5.8.1... woff2 swap
Size 1 KB
Load time 44 ms
Start 7.2 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)
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
106 requests over 8381ms
INFO
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https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=afs_1234567890&jk=5c%2F0IRKPRbO6F2Ak1kZA3w%3D%3D&bg=!WFulWznNAAa1ilLUlYo7AEcBe5WfOAgRBbPI08OnhIkPv7mAu_hqZsNiom8N_Wjrg_Palx9MiDthROk1dH8f8jAZ9ml38bTaR230bjDqt4TG-XyMjCs9rgIAAACWUgAAAAVoAQd-ABveivYLUAEv5q9ght8hBwtFoltS8wBPCOiW5u4KAE73micWiea8KCp-vL1nBXCiycidcJdtmRvcWxDGTvzhUzk_1yg4D-AWgCAFJRtOVc33jlk0CTNoDaVGwytXZg3XJkfrq12CnQxqGnEnqHyZAhF8siQGhQQ5bOw5sHlw069C_wOMCMVQl8ge2cmWJiK9Usz6R0JSZETeA2NY0DdNZEhkKcgzU4DmK38On5p_-DCERpypYiTw6h1VQTTLgfyz3NNL0ArxD_YMabbZdCfFQot0UwSf5OreKymoa7KuImjZRdl5ZaGYpJGJNLmYYIoSrP1jfX-SdE5DTu26yydgrplY9XWJstBo8H0Wro8trzT-woUkJXRCZkuevEysP2yZ7i5HL7uUph6iTv5Hud688Jt9C3IoWVqb9hcjcCAfgdfCNYlDFSCV0dqhwyBDj-8ACQrU1oe6T_vbKxkwdLbsFD-Wz9500iQhUNjFc9kYOanIxMT7AzI2mdrAJqW7czTs7dPKWRjJzre2MAoV9a6HHeKN71sCgsbVbQ6t4DTAtZsyyQ7y1tX8xv31wCZgscVtt-pe-ly2BVFE7OdEa2Km8yWSmLq3dCNkhVFO8MOHZWl5swr0VVkjhvcXVqdud2PY4kItixr8mDU_UX1iNGyPMJdMcWZvDWanTUizthSDIn_05QxEp-R5LH4W3xusePCcioG9plNoifaYi6Z-VG2B688MD7Apj8YRQNTxGAjbiKj5BRIxAjahV9BlkBUYrny93VeML51XMykQjQBgSvUr8hcxGg2BX88i_7T3eyZz4vo5UlVGzo_GV5Y_OUhMIeZHFmg-E4nSlZW-RUCI7dlJtdi5 — 204 — 17 B — 8 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 3669ms · 467KB · $49/mo
www.uab.edu
Other
Costly
Execution 1652ms
Transfer 32 KB
Monthly Cost $22/mo
Unattributable
Other
Costly
Execution 707ms
Transfer 0 KB
Monthly Cost $9/mo
OneTrust
Consent
Essential
Execution 384ms
Transfer 89 KB
Unused 51%
Monthly Cost $5/mo
OneTrust
Consent
Essential
Execution 193ms
Transfer 11 KB
Monthly Cost $3/mo
cse.google.com
Other
Optional
Execution 140ms
Transfer 4 KB
Monthly Cost $2/mo
kit.fontawesome.com
Other
Optional
Execution 129ms
Transfer 6 KB
Monthly Cost $2/mo
www.uab.edu
Other
Optional
Execution 97ms
Transfer 51 KB
Unused 78%
Monthly Cost $1/mo
www.google.com
Other
Optional
Execution 81ms
Transfer 98 KB
Unused 50%
Monthly Cost $1/mo
cse.google.com
Other
Optional
Execution 77ms
Transfer 44 KB
Unused 73%
Monthly Cost $1/mo
www.uab.edu
Other
Optional
Execution 72ms
Transfer 30 KB
Monthly Cost $1/mo
ep2.adtrafficquality.google
Other
Optional
Execution 72ms
Transfer 8 KB
Monthly Cost $1/mo
www.uab.edu
Other
Optional
Execution 66ms
Transfer 94 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.uab.edu adds 1652ms and costs ~$22/month
  • Unattributable adds 707ms and costs ~$9/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.uab.edu takes 1652ms 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 707ms 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

51% of OneTrust'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

78% of www.uab.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

50% of www.google.com'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

73% of cse.google.com'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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