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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
75
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
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.
91
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.

3.75 s

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

3.91 s

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

20 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.

6.31 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.

4.07 s

Page Load Progression

736 ms
1.5 s
2.2 s
2.9 s
3.7 s
4.4 s
5.2 s
5.9 s
Checks
17
10 PASS 3 REVIEW 2 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 (250.4 KiB of 250.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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
586ms total JS execution
REVIEW
586ms total JS execution
Info::
Unattributable: 183ms CPU time
Info::
https://www.diva-portal.org/smash/search.jsf?dswid...: 144ms CPU time
Info::
https://www.diva-portal.org/smash/javax.faces.reso...: 112ms CPU time
Info::
https://www.diva-portal.org/smash/javax.faces.reso...: 85ms CPU time
Info::
https://www.diva-portal.org/smash/javax.faces.reso...: 62ms CPU time
Warning::
Third-party scripts: 586ms (100% of total)

Main Thread Breakdown

Other 34% Script Evaluation 28% Script Parsing & Compilation 18% Style & Layout 12% Parse HTML & CSS 7%
ScriptTotalScriptingParse/CompileParty
Unattributable183ms6ms0ms3rd
https://www.diva-portal.org/smash/search.jsf?dswid=2536144ms23ms4ms3rd
https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery.js.jsf?ln=primefaces&v=5.2.7112ms75ms15ms3rd
https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery-plugins.js.jsf?ln=primefaces&v=5.2.785ms44ms32ms3rd
https://www.diva-portal.org/smash/javax.faces.resource/primefaces.js.jsf?ln=primefaces&v=5.2.762ms16ms45ms3rd
B
JS Bundles
10 scripts, 121 KB unused
REVIEW
10 scripts, 121 KB unused
Warning::
https://www.diva-portal.org/smash/javax.faces.reso...: 66 KB unused (93%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.diva-portal.org/smash/javax.faces.reso...: 55 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 121 KB
121 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.diva-portal.org/smash/javax.faces.resource/primefaces.js.jsf?ln=primefaces&v=5.2.771 KB66 KB (93%)✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery-plugins.js.jsf?ln=primefaces&v=5.2.764 KB55 KB (86%)✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/windowhandler.js.jsf?ln=deltaspike&v=1.9.43 KB—✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/jsf.js.jsf?ln=javax.faces12 KB—✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery.js.jsf?ln=primefaces&v=5.2.737 KB—✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/primefaces-extensions.js.jsf?ln=primefaces-extensions&v=3.2.06 KB—✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/blockui/blockui.js.jsf?ln=primefaces-extensions&v=3.2.04 KB—✓3rd
https://www.diva-portal.org/smash/javax.faces.resource/idlemonitor/idlemonitor.js.jsf?ln=primefaces&v=5.2.72 KB—✓3rd
https://www.diva-portal.org/smash/resources/js/navigation.js2 KB—✓3rd
https://www.diva-portal.org/smash/resources/js/default.js1 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

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

Green Hosting

No green hosting detected

A+
Page Weight Budget
251 KB transferred, 26 requests
PASS
251 KB transferred, 26 requests
Info::
Page weighs 950 KB (251 KB transferred)
Info::
26 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
251 KB / 2.4 MB budget
251 KB transferred
26 requests
0.05 g CO2 per page load
JavaScript 202.0 KiB 81%
CSS 34.6 KiB 14%
HTML 6.4 KiB 3%
Images 5.4 KiB 2%
Other 2.2 KiB 1%
0 2.4 MB 4.9 MB
Under budget
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
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 5 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
Page Weight Inventory
26 resources · 251 KB · 121 KB savings available
PASS
26 resources · 251 KB · 121 KB savings available
Info::
Within 1MB page-weight target
Got: 251 KB
Info::
~121 KB of savings available
Warning::
25 third-party resources (100% of weight)
26 resources · 250.7 KiB · 25 third-party Within 1MB page-weight target
JavaScript 81% · 202.0 KiB
CSS 14% · 34.6 KiB
Image 3% · 6.9 KiB
Document 3% · 6.7 KiB
Other 0% · 438 B

~121.0 KiB of savings available

Remove unused JavaScript: 121.0 KiB
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
26 requests over 3791ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.7 s LCP 3.9 shttps://diva-portal.org// https://diva-portal.org/ — 302 — 260 B — 798 ms — http/1.1https://www.diva-portal.org/smash/www.diva-portal.org/smash/ https://www.diva-portal.org/smash/ — 302 — 438 B — 650 ms — http/1.1https://www.diva-portal.org/smash/search.jsf?dswid=2536www.diva-portal.org/smash/search.js... https://www.diva-portal.org/smash/search.jsf?dswid=2536 — 200 — 6.4 KiB — 491 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/theme.css.jsf?ln=primefaces-casablancawww.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/theme.css.jsf?ln=primefaces-casablanca — 200 — 3.4 KiB — 227 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/fa/font-awesome.css.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/fa/font-awesome.css.jsf?ln=primefaces&v=5.2.7 — 200 — 6.0 KiB — 467 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/windowhandler.js.jsf?ln=deltaspike&v=1.9.4www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/windowhandler.js.jsf?ln=deltaspike&v=1.9.4 — 200 — 3.2 KiB — 679 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/jsf.js.jsf?ln=javax.faceswww.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/jsf.js.jsf?ln=javax.faces — 200 — 11.6 KiB — 899 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/primefaces.css.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/primefaces.css.jsf?ln=primefaces&v=5.2.7 — 200 — 12.5 KiB — 709 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery.js.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery.js.jsf?ln=primefaces&v=5.2.7 — 200 — 36.7 KiB — 1.1 s — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery-plugins.js.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/jquery/jquery-plugins.js.jsf?ln=primefaces&v=5.2.7 — 200 — 64.5 KiB — 1.3 s — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/primefaces.js.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/primefaces.js.jsf?ln=primefaces&v=5.2.7 — 200 — 71.2 KiB — 1.3 s — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/primefaces-extensions.js.jsf?ln=primefaces-extensions&v=3.2.0www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/primefaces-extensions.js.jsf?ln=primefaces-extensions&v=3.2.0 — 200 — 6.4 KiB — 907 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/blockui/blockui.css.jsf?ln=primefaces-extensions&v=3.2.0www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/blockui/blockui.css.jsf?ln=primefaces-extensions&v=3.2.0 — 200 — 597 B — 626 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/blockui/blockui.js.jsf?ln=primefaces-extensions&v=3.2.0www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/blockui/blockui.js.jsf?ln=primefaces-extensions&v=3.2.0 — 200 — 4.5 KiB — 922 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/idlemonitor/idlemonitor.js.jsf?ln=primefaces&v=5.2.7www.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/idlemonitor/idlemonitor.js.jsf?ln=primefaces&v=5.2.7 — 200 — 1.5 KiB — 1.1 s — http/1.1https://www.diva-portal.org/smash/resources/js/navigation.jswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/js/navigation.js — 200 — 1.7 KiB — 1.1 s — http/1.1https://www.diva-portal.org/smash/resources/js/default.jswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/js/default.js — 200 — 811 B — 1.1 s — http/1.1https://www.diva-portal.org/smash/resources/css/default-2.34.0.csswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/css/default-2.34.0.css — 200 — 9.1 KiB — 646 ms — http/1.1https://www.diva-portal.org/smash/resources/css/statistics.csswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/css/statistics.css — 200 — 871 B — 628 ms — http/1.1https://www.diva-portal.org/smash/resources/css/diva.csswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/css/diva.css — 200 — 1.4 KiB — 630 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/ajax-loader1.gif.jsf?ln=imageswww.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/ajax-loader1.gif.jsf?ln=images — 200 — 2.9 KiB — 219 ms — http/1.1https://www.diva-portal.org/smash/resources/css/print.csswww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/css/print.css — 200 — 829 B — 212 ms — http/1.1https://www.diva-portal.org/smash/resources/images/head_logo.gifwww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/images/head_logo.gif — 200 — 1.1 KiB — 211 ms — http/1.1https://www.diva-portal.org/smash/javax.faces.resource/images/default.png.jsf?ln=primefaces-casablancawww.diva-portal.org/smash/javax.fac... https://www.diva-portal.org/smash/javax.faces.resource/images/default.png.jsf?ln=primefaces-casablanca — 200 — 1.3 KiB — 214 ms — http/1.1https://www.diva-portal.org/smash/resources/images/diva/favicon.pngwww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/images/diva/favicon.png — 200 — 1.5 KiB — 212 ms — http/1.1https://www.diva-portal.org/smash/resources/images/diva/favicon.pngwww.diva-portal.org/smash/resources... https://www.diva-portal.org/smash/resources/images/diva/favicon.png — 200 — 0 B — 1 ms — http/1.1
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 586ms · 179KB · kr64/mo
Unattributable
Other
Optional
Execution 183ms
Transfer 0 KB
Monthly Cost kr20/mo
www.diva-portal.org
Other
Optional
Execution 144ms
Transfer 6 KB
Monthly Cost kr16/mo
www.diva-portal.org
Other
Optional
Execution 112ms
Transfer 37 KB
Monthly Cost kr12/mo
www.diva-portal.org
Other
Optional
Execution 85ms
Transfer 64 KB
Unused 86%
Monthly Cost kr9/mo
www.diva-portal.org
Other
Optional
Execution 62ms
Transfer 71 KB
Unused 93%
Monthly Cost kr7/mo

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

86% of www.diva-portal.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

93% of www.diva-portal.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

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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