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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
4
PASS
11
INFO
2

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

Mobile Desktop
68
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.
100
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.

1.12 s

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

3.28 s

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

42 ms

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

1.152

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

2.27 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.

3.71 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
11 PASS 4 REVIEW
B
Image Optimization
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Warning::
https://static.liu.se/mf/8239727_n_0_560_53_368_56... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://static.liu.se/mf/12522592_n_0_560_19_334_5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://static.liu.se/mf/8231327_n_0_560_29_344_55... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://static.liu.se/mf/11010678_n_221_411_0_201_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://static.liu.se/mf/10852308_n_0_560_0_315_56... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://static.liu.se/mf/12880731_n_0_560_29_344_5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
16 images 705 KB
0 oversized -0 KB
3 legacy format
6 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

B
JS Execution Cost
697ms total JS execution
REVIEW
697ms total JS execution
Warning::
https://liu.se/dist/global/scripts/vendor/index.js...: 320ms CPU time
Info::
https://liu.se/: 207ms CPU time
Info::
Unattributable: 170ms CPU time
Info::
Third-party scripts: 170ms (24% of total)

Main Thread Breakdown

Script Evaluation 33% Other 29% Style & Layout 19% Rendering 10% Parse HTML & CSS 5% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://liu.se/dist/global/scripts/vendor/index.js?v=20260210153732320ms228ms18ms1st
https://liu.se/207ms4ms0ms1st
Unattributable170ms5ms0ms3rd
B
JS Bundles
2 scripts, 67 KB unused
REVIEW
2 scripts, 67 KB unused
Warning::
https://liu.se/dist/global/scripts/vendor/index.js...: 38 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://liu.se/dist/global/scripts/vendors.js?v=20...: 29 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 67 KB
67 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://liu.se/dist/global/scripts/vendor/index.js?v=2026021015373267 KB38 KB (60%)✓1st
https://liu.se/dist/global/scripts/vendors.js?v=2026021015373257 KB29 KB (54%)✓1st

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
992 KB transferred, 29 requests
PASS
992 KB transferred, 29 requests
Info::
Page weighs 1.5 MB (992 KB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.20 g CO2 per page load
992 KB / 2.4 MB budget
992 KB transferred
29 requests
0.20 g CO2 per page load
Images 705.1 KiB 71%
JavaScript 123.4 KiB 12%
Fonts 84.4 KiB 9%
CSS 55.6 KiB 6%
HTML 14.2 KiB 1%
Other 5.5 KiB 1%
Other 4.3 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
28% third-party, 0 ms blocking
PASS
28% third-party, 0 ms blocking
Info::
Third-party code accounts for 28% of page weight (276.4 KiB of 992.4 KiB)
Info::
Third-party blocking time is low (0 ms)
72%
28%
First-party Third-party
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
6 fonts (84 KB)
PASS
6 fonts (84 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

84 KB total

Render-blocking

0

of 6

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 FCP 1.1 s LCP 3.3 shttps://liu.se/dist/global/fonts/fontawesome/fa-solid-900.woff2?v=6.1.2fa-solid-900.woff2 https://liu.se/dist/global/fonts/fontawesome/fa-solid-900.woff2?v=6.1.2 — 8.3 KiB — 70 ms — font-display: swaphttps://liu.se/dist/global/fonts/fontawesome/fa-brands-400.woff2?v=6.1.2fa-brands-400.woff2 https://liu.se/dist/global/fonts/fontawesome/fa-brands-400.woff2?v=6.1.2 — 5.3 KiB — 70 ms — font-display: swaphttps://liu.se/dist/global/fonts/korolevliu/korolevliu_light-webfont.woff2korolevliu_light-webfon... https://liu.se/dist/global/fonts/korolevliu/korolevliu_light-webfont.woff2 — 18.4 KiB — 122 ms — font-display: swaphttps://liu.se/dist/global/fonts/korolevliu/korolevliu_bold-webfont.woff2korolevliu_bold-webfont... https://liu.se/dist/global/fonts/korolevliu/korolevliu_bold-webfont.woff2 — 18.2 KiB — 119 ms — font-display: swaphttps://liu.se/dist/global/fonts/black-tie/regular/blacktie-regular-webfont.woff2?v=1.0.0blacktie-regular-webfon... https://liu.se/dist/global/fonts/black-tie/regular/blacktie-regular-webfont.woff2?v=1.0.0 — 16.2 KiB — 172 ms — font-display: swaphttps://liu.se/dist/global/fonts/korolevliu/korolevliu_medium-webfont.woff2korolevliu_medium-webfo... https://liu.se/dist/global/fonts/korolevliu/korolevliu_medium-webfont.woff2 — 18.0 KiB — 175 ms — font-display: swap
fa-solid-900.woff2 woff2 swap
Size 8 KB
Load time 70 ms
Start 496 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 5 KB
Load time 70 ms
Start 496 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_light-webfon... woff2 swap
Size 18 KB
Load time 122 ms
Start 496 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_bold-webfont... woff2 swap
Size 18 KB
Load time 119 ms
Start 497 ms
Risk FOUT — text flashes from fallback to web font
blacktie-regular-webfon... woff2 swap
Size 16 KB
Load time 172 ms
Start 497 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_medium-webfo... woff2 swap
Size 18 KB
Load time 175 ms
Start 497 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
9 hints, 0 missing preconnects
PASS
9 hints, 0 missing preconnects
Info::
Page uses 9 resource hint(s)

Current Resource Hints

preconnect
1
preload
8
dns-prefetch
—
prefetch
—

9 resource hints configured

A+
Page Weight Inventory
29 resources · 992 KB · 67 KB savings available
PASS
29 resources · 992 KB · 67 KB savings available
Info::
Within 1MB page-weight target
Got: 992 KB
Info::
~67 KB of savings available
Info::
11 third-party resources (28% of weight)
Info::
1 resources over 200KB
29 resources · 992.4 KiB · 11 third-party Within 1MB page-weight target
Image 71% · 709.4 KiB
JavaScript 12% · 123.4 KiB
Font 9% · 84.4 KiB
CSS 6% · 55.6 KiB
Document 2% · 19.7 KiB

~66.8 KiB of savings available

Remove unused JavaScript: 66.8 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
A
HTTP Caching
max-age=121 (2 minutes)
PASS
max-age=121 (2 minutes)
Info::
Cache-Control header is set
Got: max-age=121
Info::
Effective TTL: 2 minutes (max-age=121)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=121

DirectiveValueMeaning
max-age121Cache for 2 minutes
Effective TTL: 121 seconds
Network Waterfall
29 requests over 1111ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.1 s LCP 3.3 shttps://liu.se// https://liu.se/ — 200 — 14.2 KiB — 533 ms — h2https://liu.se/dist/global/styles/style.min.css?v=20260210153732/dist/global/styles/style.min.css?v... https://liu.se/dist/global/styles/style.min.css?v=20260210153732 — 200 — 46.8 KiB — 175 ms — h2https://liu.se/dist/global/styles/cookieconsent-v3.0.0-min.css/dist/global/styles/cookieconsent-v... https://liu.se/dist/global/styles/cookieconsent-v3.0.0-min.css — 200 — 8.8 KiB — 73 ms — h2https://liu.se/dist/global/fonts/fontawesome/fa-solid-900.woff2?v=6.1.2/dist/global/fonts/fontawesome/fa-s... https://liu.se/dist/global/fonts/fontawesome/fa-solid-900.woff2?v=6.1.2 — 200 — 8.3 KiB — 70 ms — h2https://liu.se/dist/global/fonts/fontawesome/fa-brands-400.woff2?v=6.1.2/dist/global/fonts/fontawesome/fa-b... https://liu.se/dist/global/fonts/fontawesome/fa-brands-400.woff2?v=6.1.2 — 200 — 5.3 KiB — 70 ms — h2https://liu.se/dist/global/fonts/korolevliu/korolevliu_light-webfont.woff2/dist/global/fonts/korolevliu/korol... https://liu.se/dist/global/fonts/korolevliu/korolevliu_light-webfont.woff2 — 200 — 18.4 KiB — 122 ms — h2https://liu.se/dist/global/fonts/korolevliu/korolevliu_bold-webfont.woff2/dist/global/fonts/korolevliu/korol... https://liu.se/dist/global/fonts/korolevliu/korolevliu_bold-webfont.woff2 — 200 — 18.2 KiB — 119 ms — h2https://liu.se/dist/global/fonts/black-tie/regular/blacktie-regular-webfont.woff2?v=1.0.0/dist/global/fonts/black-tie/regula... https://liu.se/dist/global/fonts/black-tie/regular/blacktie-regular-webfont.woff2?v=1.0.0 — 200 — 16.2 KiB — 172 ms — h2https://liu.se/dist/global/fonts/korolevliu/korolevliu_medium-webfont.woff2/dist/global/fonts/korolevliu/korol... https://liu.se/dist/global/fonts/korolevliu/korolevliu_medium-webfont.woff2 — 200 — 18.0 KiB — 175 ms — h2https://static.liu.se/mf/11010678_n_1_560_0_201_558_201_640_seh0bsul.webpstatic.liu.se/mf/11010678_n_1_560_0... https://static.liu.se/mf/11010678_n_1_560_0_201_558_201_640_seh0bsul.webp — 200 — 19.5 KiB — 526 ms — h2https://static.liu.se/mf/11010678_n_77_483_0_201_558_201_640_bqexkjge.webpstatic.liu.se/mf/11010678_n_77_483_... https://static.liu.se/mf/11010678_n_77_483_0_201_558_201_640_bqexkjge.webp — 200 — 22.3 KiB — 453 ms — h2https://static.liu.se/mf/11010678_n_221_411_0_201_558_201_640_bupnaumt.webpstatic.liu.se/mf/11010678_n_221_411... https://static.liu.se/mf/11010678_n_221_411_0_201_558_201_640_bupnaumt.webp — 200 — 36.0 KiB — 422 ms — h2https://static.liu.se/mf/8239727_n_0_560_53_368_560_420_640_kcffsbjw.webpstatic.liu.se/mf/8239727_n_0_560_53... https://static.liu.se/mf/8239727_n_0_560_53_368_560_420_640_kcffsbjw.webp — 200 — 39.8 KiB — 473 ms — h2https://static.liu.se/mf/12522592_n_0_560_19_334_560_373_640_fosykg0q.webpstatic.liu.se/mf/12522592_n_0_560_1... https://static.liu.se/mf/12522592_n_0_560_19_334_560_373_640_fosykg0q.webp — 200 — 43.6 KiB — 524 ms — h2https://liu.se/dist/global/images/ajax-loader.gif/dist/global/images/ajax-loader.gif https://liu.se/dist/global/images/ajax-loader.gif — 200 — 6.8 KiB — 167 ms — h2https://liu.se/dist/global/images/logo-main.svg/dist/global/images/logo-main.svg https://liu.se/dist/global/images/logo-main.svg — 200 — 4.8 KiB — 172 ms — h2https://static.liu.se/mf/10852308_n_0_560_0_315_560_315_640_txdmtqnr.webpstatic.liu.se/mf/10852308_n_0_560_0... https://static.liu.se/mf/10852308_n_0_560_0_315_560_315_640_txdmtqnr.webp — 200 — 24.1 KiB — 501 ms — h2https://liu.se/dist/global/scripts/vendors.js?v=20260210153732/dist/global/scripts/vendors.js?v=2... https://liu.se/dist/global/scripts/vendors.js?v=20260210153732 — 200 — 56.8 KiB — 182 ms — h2https://liu.se/dist/global/scripts/vendor/index.js?v=20260210153732/dist/global/scripts/vendor/index.j... https://liu.se/dist/global/scripts/vendor/index.js?v=20260210153732 — 200 — 66.6 KiB — 181 ms — h2https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/65356-50116/dfsmedia/dd35e243dfb7406993c1815aa... https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/65356-50116 — 200 — 94.2 KiB — 90 ms — h2https://static.liu.se/mf/8231327_n_0_560_29_344_559_373_640_gnqff7cm.webpstatic.liu.se/mf/8231327_n_0_560_29... https://static.liu.se/mf/8231327_n_0_560_29_344_559_373_640_gnqff7cm.webp — 200 — 19.3 KiB — 227 ms — h2https://static.liu.se/mf/12880731_n_0_560_29_344_559_373_640_i2ynnwje.webpstatic.liu.se/mf/12880731_n_0_560_2... https://static.liu.se/mf/12880731_n_0_560_29_344_559_373_640_i2ynnwje.webp — 200 — 16.9 KiB — 246 ms — h2https://liu.se/sv-SE/api/event/EventCalendarAjax?searchId=DB45AAF1276B41AFB7375936D42AEE1D/sv-SE/api/event/EventCalendarAjax?... https://liu.se/sv-SE/api/event/EventCalendarAjax?searchId=DB45AAF1276B41AFB7375936D42AEE1D — 200 — 5.5 KiB — 126 ms — h2https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/62051-50116/dfsmedia/dd35e243dfb7406993c1815aa... https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/62051-50116 — 200 — 205.7 KiB — 84 ms — h2https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/36580-50063?as=1&w=300&h=300&cr=1&crw=300&crh=300&bc=%23ffffff/dfsmedia/dd35e243dfb7406993c1815aa... https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/36580-50063?as=1&w=300&h=300&cr=1&crw=300&crh=300&bc=%23ffffff — 200 — 117.1 KiB — 117 ms — h2https://static.liu.se/mf/8952184_n_94_467_0_373_559_373_300_7r1mavml.webpstatic.liu.se/mf/8952184_n_94_467_0... https://static.liu.se/mf/8952184_n_94_467_0_373_559_373_300_7r1mavml.webp — 200 — 14.2 KiB — 131 ms — h2https://static.liu.se/mf/12477897_n_175_487_62_374_560_374_300_pkwrilmn.webpstatic.liu.se/mf/12477897_n_175_487... https://static.liu.se/mf/12477897_n_175_487_62_374_560_374_300_pkwrilmn.webp — 200 — 20.8 KiB — 131 ms — h2https://static.liu.se/mf/11017344_n_75_320_52_297_560_315_300_zkvnjnw4.webpstatic.liu.se/mf/11017344_n_75_320_... https://static.liu.se/mf/11017344_n_75_320_52_297_560_315_300_zkvnjnw4.webp — 200 — 19.8 KiB — 130 ms — h2https://liu.se/favicon.ico/favicon.ico https://liu.se/favicon.ico — 200 — 4.3 KiB — 54 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
24% of JavaScript execution is third-party
First-party Third-party 170ms · 0KB · kr18/mo
Unattributable
Other
Optional
Execution 170ms
Transfer 0 KB
Monthly Cost kr18/mo

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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