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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
6
PASS
7
INFO
1

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

Mobile Desktop
97
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.

370 ms

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

1.24 s

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

0 ms

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

0.032

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

797 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.26 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
14
7 PASS 6 REVIEW
B
Page Weight Budget
1.2 MB transferred, 29 requests
REVIEW
1.2 MB transferred, 29 requests
Info::
Page weighs 1.8 MB (1.2 MB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.26 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
29 requests
0.26 g CO2 per page load
Images 959.6 KiB 77%
JavaScript 123.4 KiB 10%
Fonts 84.4 KiB 7%
CSS 55.6 KiB 4%
HTML 14.2 KiB 1%
Other 5.5 KiB 0%
Other 4.3 KiB 0%
0 2.4 MB 4.9 MB
Under budget
B
Third-Party Impact
43% third-party, 0 ms blocking
REVIEW
43% third-party, 0 ms blocking
Info::
Third-party code accounts for 43% of page weight (531.0 KiB of 1.2 MiB)
Info::
Third-party blocking time is low (0 ms)
57%
43%
First-party Third-party
C
Image Optimization
Action
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/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/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/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 960 KB
0 oversized -0 KB
4 legacy format
5 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

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
Page Weight Inventory
Action
29 resources · 1.2 MB · 67 KB savings available
REVIEW
29 resources · 1.2 MB · 67 KB savings available
Warning::
Page weight 223 KB over 1MB target
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~67 KB of savings available
Warning::
11 third-party resources (43% of weight)
Info::
1 resources over 200KB
29 resources · 1.2 MiB · 11 third-party 223.0 KiB over 1MB target
Image 77% · 963.9 KiB
JavaScript 10% · 123.4 KiB
Font 7% · 84.4 KiB
CSS 4% · 55.6 KiB
Document 2% · 19.7 KiB

~66.8 KiB of savings available

Remove unused JavaScript: 66.8 KiB
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+
JS Execution Cost
137ms total JS execution
PASS
137ms total JS execution
Info::
https://liu.se/dist/global/scripts/vendor/index.js...: 87ms CPU time
Info::
https://liu.se/: 51ms CPU time

Main Thread Breakdown

Script Evaluation 33% Other 29% Style & Layout 20% Rendering 7% Script Parsing & Compilation 5% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://liu.se/dist/global/scripts/vendor/index.js?v=2026021015373287ms61ms5ms1st
https://liu.se/51ms1ms0ms1st
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 500 ms 1.0 s FCP 370 ms LCP 1.2 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 — 8.4 KiB — 124 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 — 167 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 — 18.3 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 — 173 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 — 165 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 — 170 ms — font-display: swap
fa-solid-900.woff2 woff2 swap
Size 8 KB
Load time 124 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 5 KB
Load time 167 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_light-webfon... woff2 swap
Size 18 KB
Load time 122 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_bold-webfont... woff2 swap
Size 18 KB
Load time 173 ms
Start 462 ms
Risk FOUT — text flashes from fallback to web font
blacktie-regular-webfon... woff2 swap
Size 16 KB
Load time 165 ms
Start 462 ms
Risk FOUT — text flashes from fallback to web font
korolevliu_medium-webfo... woff2 swap
Size 18 KB
Load time 170 ms
Start 462 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
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 1028ms
INFO
0 ms 500 ms 1.0 s FCP 370 ms LCP 1.2 shttps://liu.se// https://liu.se/ — 200 — 14.2 KiB — 495 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 — 118 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 — 164 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 — 8.4 KiB — 124 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 — 167 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 — 18.3 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 — 173 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 — 165 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 — 170 ms — h2https://static.liu.se/mf/11010678_n_1_560_0_201_558_201_1440_jvw3khpo.webpstatic.liu.se/mf/11010678_n_1_560_0... https://static.liu.se/mf/11010678_n_1_560_0_201_558_201_1440_jvw3khpo.webp — 200 — 46.1 KiB — 401 ms — h2https://static.liu.se/mf/11010678_n_77_483_0_201_558_201_737_upnmloxj.jpgstatic.liu.se/mf/11010678_n_77_483_... https://static.liu.se/mf/11010678_n_77_483_0_201_558_201_737_upnmloxj.jpg — 200 — 72.0 KiB — 427 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 — 325 ms — h2https://static.liu.se/mf/8239727_n_0_560_53_368_560_420_1200_grmdvwez.webpstatic.liu.se/mf/8239727_n_0_560_53... https://static.liu.se/mf/8239727_n_0_560_53_368_560_420_1200_grmdvwez.webp — 200 — 83.0 KiB — 426 ms — h2https://static.liu.se/mf/12522592_n_0_560_19_334_560_373_1200_aqxcfmbf.webpstatic.liu.se/mf/12522592_n_0_560_1... https://static.liu.se/mf/12522592_n_0_560_19_334_560_373_1200_aqxcfmbf.webp — 200 — 108.4 KiB — 353 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 — 161 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 — 166 ms — h2https://static.liu.se/mf/10852308_n_0_560_0_315_560_315_1200_sgzdymu3.webpstatic.liu.se/mf/10852308_n_0_560_0... https://static.liu.se/mf/10852308_n_0_560_0_315_560_315_1200_sgzdymu3.webp — 200 — 52.7 KiB — 298 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 — 174 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 — 175 ms — h2https://static.liu.se/mf/8231327_n_0_560_29_344_559_373_1200_rzzsko33.webpstatic.liu.se/mf/8231327_n_0_560_29... https://static.liu.se/mf/8231327_n_0_560_29_344_559_373_1200_rzzsko33.webp — 200 — 40.4 KiB — 260 ms — h2https://static.liu.se/mf/12880731_n_0_560_29_344_559_373_1200_6iilnvdl.webpstatic.liu.se/mf/12880731_n_0_560_2... https://static.liu.se/mf/12880731_n_0_560_29_344_559_373_1200_6iilnvdl.webp — 200 — 37.4 KiB — 229 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 — 125 ms — h2https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/65356-50116/dfsmedia/dd35e243dfb7406993c1815aa... https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/65356-50116 — 200 — 94.2 KiB — 108 ms — h2https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/62051-50116/dfsmedia/dd35e243dfb7406993c1815aa... https://liu.se/dfsmedia/dd35e243dfb7406993c1815aaf88a675/62051-50116 — 200 — 205.7 KiB — 131 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 — 86 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 — 55 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 — 55 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 — 56 ms — h2https://liu.se/favicon.ico/favicon.ico https://liu.se/favicon.ico — 200 — 4.3 KiB — 55 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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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