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Performance

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

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

Mobile Desktop
72
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.26 s

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

2.71 s

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

73 ms

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

0.175

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

1.71 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.

2.72 s

Page Load Progression

587 ms
1.2 s
1.8 s
2.4 s
2.9 s
3.5 s
4.1 s
4.7 s
Checks
15
5 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
3.5 MB transferred, 117 requests
FIX
3.5 MB transferred, 117 requests
Warning::
Page weighs 7.2 MB (3.5 MB transferred)
Warning::
Images are 2.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.1 MB
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Warning::
117 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.74 g CO2 per page load
3.5 MB / 2.4 MB budget
3.5 MB transferred
117 requests
0.74 g CO2 per page load
Images 2.1 MiB 60%
JavaScript 1.0 MiB 29%
CSS 190.6 KiB 5%
Fonts 146.0 KiB 4%
HTML 28.4 KiB 1%
Other 1.3 KiB 0%
Other 946 B 0%
Other 567 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

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 (3.5 MiB of 3.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
63 scripts, 344 KB unused
FIX
63 scripts, 344 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MLP...: 71 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-5BRF...: 63 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://web.ub.edu/combo?browserId=chrome&minifier...: 58 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://web.ub.edu/combo?browserId=chrome&minifier...: unminified — 10 KB could be saved
Warning::
https://web.ub.edu/combo?browserId=chrome&minifier...: 52 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://script.hotjar.com/modules.6a0f3932cb1341a3...: 38 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 344 KB
344 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=GTM-MLPG24R176 KB71 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-5BRF8HTDBV&cx=c&gtm=4e64h1151 KB63 KB (42%)✓3rd
https://web.ub.edu/combo?browserId=chrome&minifierType=js&languageId=ca_ES&t=1776410577351&/o/frontend-js-jquery-web/jquery/jquery.min.js&/o/frontend-js-jquery-web/jquery/init.js&/o/frontend-js-jquery-web/jquery/ajax.js&/o/frontend-js-jquery-web/jquery/bootstrap.bundle.min.js&/o/frontend-js-jquery-web/jquery/collapsible_search.js&/o/frontend-js-jquery-web/jquery/fm.js&/o/frontend-js-jquery-web/jquery/form.js&/o/frontend-js-jquery-web/jquery/popper.min.js&/o/frontend-js-jquery-web/jquery/side_navigation.js77 KB58 KB (76%)✗3rd
https://web.ub.edu/combo?browserId=chrome&minifierType=js&languageId=ca_ES&t=1776410387027&/o/frontend-js-aui-web/aui/aui/aui-min.js&/o/frontend-js-aui-web/liferay/modules.js&/o/frontend-js-aui-web/liferay/aui_sandbox.js&/o/frontend-js-aui-web/aui/attribute-base/attribute-base-min.js&/o/frontend-js-aui-web/aui/attribute-complex/attribute-complex-min.js&/o/frontend-js-aui-web/aui/attribute-core/attribute-core-min.js&/o/frontend-js-aui-web/aui/attribute-observable/attribute-observable-min.js&/o/frontend-js-aui-web/aui/attribute-extras/attribute-extras-min.js&/o/frontend-js-aui-web/aui/event-custom-base/event-custom-base-min.js&/o/frontend-js-aui-web/aui/event-custom-complex/event-custom-complex-min.js&/o/frontend-js-aui-web/aui/oop/oop-min.js&/o/frontend-js-aui-web/aui/aui-base-lang/aui-base-lang-min.js&/o/frontend-js-aui-web/liferay/dependency.js&/o/frontend-js-aui-web/liferay/util.js&/o/frontend-js-web/liferay/dom_task_runner.js&/o/frontend-js-web/liferay/events.js&/o/frontend-js-web/liferay/lazy_load.js&/o/frontend-js-web/liferay/liferay.js&/o/frontend-js-web/liferay/global.bundle.js&/o/frontend-js-web/liferay/portlet.js&/o/frontend-js-web/liferay/workflow.js&/o/oauth2-provider-web/js/liferay.js108 KB52 KB (49%)✓3rd
https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js57 KB38 KB (67%)✓3rd
https://web.ub.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$core.js44 KB34 KB (78%)✓3rd
https://consent.cookiebot.com/88355e31-7fef-4d33-b6e9-f715351dd339/cc.js?renew=false&referer=web.ub.edu&dnt=false&init=false132 KB27 KB (21%)✓3rd
https://static.hotjar.com/c/hotjar-1859237.js?sv=76 KB—✓3rd
https://web.ub.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$layout.js3 KB—✓3rd
https://web.ub.edu/o/ub-theme/js/glider/glider.min.js3 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

D
Page Weight Inventory
Action
117 resources · 3.5 MB · 344 KB savings available
FIX
117 resources · 3.5 MB · 344 KB savings available
Warning::
Page weight 2.5 MB over 1MB target
Got: 3.5 MB Expected: ≤ 1 MB
Info::
~344 KB of savings available
Warning::
116 third-party resources (100% of weight)
Info::
5 resources over 200KB
117 resources · 3.5 MiB · 116 third-party 2.5 MiB over 1MB target
Image 60% · 2.1 MiB
JavaScript 29% · 1.0 MiB
CSS 5% · 190.6 KiB
Font 4% · 146.0 KiB
Document 1% · 28.5 KiB
Other 0% · 1.5 KiB

~344.4 KiB of savings available

Remove unused JavaScript: 344.4 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
36 images, 0 KB saveable
REVIEW
36 images, 0 KB saveable
Warning::
https://web.ub.edu/documents/2685349/2686580/usuar... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/enlla... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/Micro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/xarxa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/leru.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/hr.sv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/o/ub-theme/images/ico/Search.sv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.ub.edu/documents/2685349/2686580/charm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
36 images 2.1 MB
0 oversized -0 KB
30 legacy format
8 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

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
JS Execution Cost
Action
1036ms total JS execution
REVIEW
1036ms total JS execution
Warning::
https://consent.cookiebot.com/uc.js: 274ms CPU time
Info::
Unattributable: 245ms CPU time
Info::
https://web.ub.edu/web/ub/: 220ms CPU time
Info::
https://web.ub.edu/o/frontend-js-spa-web/__liferay...: 81ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-MLP...: 78ms CPU time
Warning::
Third-party scripts: 1036ms (100% of total)

Main Thread Breakdown

Script Evaluation 43% Other 25% Style & Layout 13% Parse HTML & CSS 10% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://consent.cookiebot.com/uc.js274ms168ms4ms3rd
Unattributable245ms13ms0ms3rd
https://web.ub.edu/web/ub/220ms9ms4ms3rd
https://web.ub.edu/o/frontend-js-spa-web/__liferay__/index.js81ms76ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MLPG24R78ms67ms10ms3rd
https://web.ub.edu/combo?browserId=chrome&minifierType=js&languageId=ca_ES&t=1776410387027&/o/frontend-js-aui-web/aui/aui/aui-min.js&/o/frontend-js-aui-web/liferay/modules.js&/o/frontend-js-aui-web/liferay/aui_sandbox.js&/o/frontend-js-aui-web/aui/attribute-base/attribute-base-min.js&/o/frontend-js-aui-web/aui/attribute-complex/attribute-complex-min.js&/o/frontend-js-aui-web/aui/attribute-core/attribute-core-min.js&/o/frontend-js-aui-web/aui/attribute-observable/attribute-observable-min.js&/o/frontend-js-aui-web/aui/attribute-extras/attribute-extras-min.js&/o/frontend-js-aui-web/aui/event-custom-base/event-custom-base-min.js&/o/frontend-js-aui-web/aui/event-custom-complex/event-custom-complex-min.js&/o/frontend-js-aui-web/aui/oop/oop-min.js&/o/frontend-js-aui-web/aui/aui-base-lang/aui-base-lang-min.js&/o/frontend-js-aui-web/liferay/dependency.js&/o/frontend-js-aui-web/liferay/util.js&/o/frontend-js-web/liferay/dom_task_runner.js&/o/frontend-js-web/liferay/events.js&/o/frontend-js-web/liferay/lazy_load.js&/o/frontend-js-web/liferay/liferay.js&/o/frontend-js-web/liferay/global.bundle.js&/o/frontend-js-web/liferay/portlet.js&/o/frontend-js-web/liferay/workflow.js&/o/oauth2-provider-web/js/liferay.js72ms42ms10ms3rd
https://www.googletagmanager.com/gtag/js?id=G-5BRF8HTDBV&cx=c&gtm=4e64h165ms55ms10ms3rd
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
3 fonts (146 KB)
PASS
3 fonts (146 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

146 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.3 s LCP 2.7 shttps://web.ub.edu/o/ub-theme/fonts/roboto/roboto_bold/Roboto-Bold.woff2Roboto-Bold.woff2 https://web.ub.edu/o/ub-theme/fonts/roboto/roboto_bold/Roboto-Bold.woff2 — 48.8 KiB — 47 ms — font-display: swaphttps://web.ub.edu/o/ub-theme/fonts/roboto/roboto_regular/Roboto-Regular.woff2Roboto-Regular.woff2 https://web.ub.edu/o/ub-theme/fonts/roboto/roboto_regular/Roboto-Regular.woff2 — 48.1 KiB — 56 ms — font-display: swaphttps://web.ub.edu/o/ub-theme/fonts/roboto/roboto_medium/Roboto-Medium.woff2Roboto-Medium.woff2 https://web.ub.edu/o/ub-theme/fonts/roboto/roboto_medium/Roboto-Medium.woff2 — 49.1 KiB — 62 ms — font-display: swap
Roboto-Bold.woff2 woff2 swap
Size 49 KB
Load time 47 ms
Start 527 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Regular.woff2 woff2 swap
Size 48 KB
Load time 56 ms
Start 527 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Medium.woff2 woff2 swap
Size 49 KB
Load time 62 ms
Start 527 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
117 requests over 3550ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 2.7 shttps://ub.edu// https://ub.edu/ — 301 — 131 B — 38 ms — http/1.1https://web.ub.edu/web/ub/web.ub.edu/web/ub/ https://web.ub.edu/web/ub/ — 200 — 27.6 KiB — 196 ms — h2https://web.ub.edu/combo?browserId=chrome&minifierType=js&languageId=ca_ES&t=1776410577351&/o/frontend-js-jquery-web/jquery/jquery.min.js&/o/frontend-js-jquery-web/jquery/init.js&/o/frontend-js-jquery-web/jquery/ajax.js&/o/frontend-js-jquery-web/jquery/bootstrap.bundle.min.js&/o/frontend-js-jquery-web/jquery/collapsible_search.js&/o/frontend-js-jquery-web/jquery/fm.js&/o/frontend-js-jquery-web/jquery/form.js&/o/frontend-js-jquery-web/jquery/popper.min.js&/o/frontend-js-jquery-web/jquery/side_navigation.jsweb.ub.edu/combo?browserId=chrome&m... https://web.ub.edu/combo?browserId=chrome&minifierType=js&languageId=ca_ES&t=1776410577351&/o/frontend-js-jquery-web/jquery/jquery.min.js&/o/frontend-js-jquery-web/jquery/init.js&/o/frontend-js-jquery-web/jquery/ajax.js&/o/frontend-js-jquery-web/jquery/bootstrap.bundle.min.js&/o/frontend-js-jquery-web/jquery/collapsible_search.js&/o/frontend-js-jquery-web/jquery/fm.js&/o/frontend-js-jquery-web/jquery/form.js&/o/frontend-js-jquery-web/jquery/popper.min.js&/o/frontend-js-jquery-web/jquery/side_navigation.js — 200 — 77.1 KiB — 96 ms — h2https://web.ub.edu/o/ub-theme/css/clay.css?browserId=chrome&themeId=ub_WAR_ubtheme&minifierType=css&languageId=ca_ES&t=1776410440000web.ub.edu/o/ub-theme/css/clay.css?... https://web.ub.edu/o/ub-theme/css/clay.css?browserId=chrome&themeId=ub_WAR_ubtheme&minifierType=css&languageId=ca_ES&t=1776410440000 — 200 — 69.7 KiB — 47 ms — h2https://web.ub.edu/combo?browserId=chrome&minifierType=css&themeId=ub_WAR_ubtheme&languageId=ca_ES&com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_asI2YGi88lQJ:%2Fo%2Fasset-publisher-web%2Fcss%2Fmain.css&com_liferay_commerce_product_asset_categories_navigation_web_internal_portlet_CPAssetCategoriesNavigationPortlet_INSTANCE_cpAssetCategoriesNavigationPortlet_navigation_menu:%2Fo%2Fcommerce-product-asset-categories-navigation-web%2Fcss%2Fmain.css&com_liferay_journal_content_web_portlet_JournalContentPortlet:%2Fo%2Fjournal-content-web%2Fcss%2Fmain.css&com_liferay_portal_search_web_search_bar_portlet_SearchBarPortlet_INSTANCE_templateSearch:%2Fo%2Fportal-search-web%2Fcss%2Fmain.css&com_liferay_product_navigation_product_menu_web_portlet_ProductMenuPortlet:%2Fo%2Fproduct-navigation-product-menu-web%2Fcss%2Fmain.css&com_liferay_product_navigation_user_personal_bar_web_portlet_ProductNavigationUserPersonalBarPortlet:%2Fo%2Fproduct-navigation-user-personal-bar-web%2Fcss%2Fmain.css&com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet:%2Fo%2Fsite-navigation-menu-web%2Fcss%2Fmain.css&t=1776410440000web.ub.edu/combo?browserId=chrome&m... https://web.ub.edu/combo?browserId=chrome&minifierType=css&themeId=ub_WAR_ubtheme&languageId=ca_ES&com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_asI2YGi88lQJ:%2Fo%2Fasset-publisher-web%2Fcss%2Fmain.css&com_liferay_commerce_product_asset_categories_navigation_web_internal_portlet_CPAssetCategoriesNavigationPortlet_INSTANCE_cpAssetCategoriesNavigationPortlet_navigation_menu:%2Fo%2Fcommerce-product-asset-categories-navigation-web%2Fcss%2Fmain.css&com_liferay_journal_content_web_portlet_JournalContentPortlet:%2Fo%2Fjournal-content-web%2Fcss%2Fmain.css&com_liferay_portal_search_web_search_bar_portlet_SearchBarPortlet_INSTANCE_templateSearch:%2Fo%2Fportal-search-web%2Fcss%2Fmain.css&com_liferay_product_navigation_product_menu_web_portlet_ProductMenuPortlet:%2Fo%2Fproduct-navigation-product-menu-web%2Fcss%2Fmain.css&com_liferay_product_navigation_user_personal_bar_web_portlet_ProductNavigationUserPersonalBarPortlet:%2Fo%2Fproduct-navigation-user-personal-bar-web%2Fcss%2Fmain.css&com_liferay_site_navigation_menu_web_portlet_SiteNavigationMenuPortlet:%2Fo%2Fsite-navigation-menu-web%2Fcss%2Fmain.css&t=1776410440000 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  • Unattributable adds 245ms and costs ~€1/month
  • web.ub.edu adds 220ms 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.

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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

consent.cookiebot.com takes 274ms 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 245ms 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

web.ub.edu takes 220ms 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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