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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
3
REVIEW
4
PASS
6
INFO
2

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

Mobile Desktop
79
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.
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.

1.43 s

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

2.58 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.

0.053

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

1.63 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.

2.61 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
15
6 PASS 4 REVIEW 3 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 (1.7 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
56 resources · 1.7 MB · 295 KB savings available
FIX
56 resources · 1.7 MB · 295 KB savings available
Warning::
Page weight 705 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~295 KB of savings available
Warning::
55 third-party resources (100% of weight)
Info::
1 resources over 200KB
56 resources · 1.7 MiB · 55 third-party 704.9 KiB over 1MB target
Image 54% · 941.3 KiB
JavaScript 32% · 548.6 KiB
Font 9% · 155.2 KiB
Document 3% · 44.7 KiB
CSS 2% · 38.3 KiB
Other 0% · 813 B

~295.2 KiB of savings available

Remove unused JavaScript: 295.2 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
Page Weight Budget
Action
1.7 MB transferred, 56 requests
REVIEW
1.7 MB transferred, 56 requests
Info::
Page weighs 3.3 MB (1.7 MB transferred)
Warning::
JavaScript is 549 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 549 KB
Info::
56 HTTP requests
Info::
Estimated 0.35 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
56 requests
0.35 g CO2 per page load
Images 937.3 KiB 54%
JavaScript 548.6 KiB 32%
Fonts 155.2 KiB 9%
HTML 44.5 KiB 3%
CSS 38.3 KiB 2%
Other 4.1 KiB 0%
Other 813 B 0%
Other 106 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

B
Image Optimization
29 images, 0 KB saveable
REVIEW
29 images, 0 KB saveable
Info::
All images are well-optimized
29 images 937 KB
0 oversized -0 KB
29 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
10 scripts, 295 KB unused
REVIEW
10 scripts, 295 KB unused
Warning::
https://www.gu.se/sites/default/files/js/js_WuoLTi...: 181 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KZ7...: 66 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://script.e-space.se/gu-se.min.js: 48 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 295 KB
295 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gu.se/sites/default/files/js/js_WuoLTi8hspulc5vOwt9fLLKA1wFQeSnNPA68u4iVXlc.js?scope=footer&delta=0&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ279 KB181 KB (65%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KZ7P6DN119 KB66 KB (56%)✓3rd
https://script.e-space.se/gu-se.min.js89 KB48 KB (54%)✓3rd
https://www.gu.se/sites/default/files/eu_cookie_compliance/eu_cookie_compliance.script.js?01 KB—✓3rd
https://www.gu.se/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.128 KB—✓3rd
https://www.gu.se/sites/default/files/js/js_2O3j8pOXIfHS8h7oVhQVaC8hfA0O5FO8ppWoYwi7hUM.js?scope=header&delta=1&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ7 KB—✓3rd
https://www.gu.se/modules/contrib/google_tag/js/gtag.js?tcpd9c1 KB—✓3rd
https://www.gu.se/modules/contrib/google_tag/js/gtm.js?tcpd9c1 KB—✓3rd
https://www.gu.se/sites/default/files/js/js_7v3GXr-s9t_I-ZUjcz0LsQeSA-PH9xEgF-yHjK-5-Rc.js?scope=header&delta=4&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ1 KB—✓3rd
https://siteimproveanalytics.com/js/siteanalyze_7340.js23 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

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
452ms total JS execution
PASS
452ms total JS execution
Info::
https://www.gu.se/sites/default/files/js/js_WuoLTi...: 187ms CPU time
Info::
https://www.gu.se/: 125ms CPU time
Info::
Unattributable: 79ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-KZ7...: 61ms CPU time
Warning::
Third-party scripts: 452ms (100% of total)

Main Thread Breakdown

Script Evaluation 35% Other 29% Style & Layout 18% Script Parsing & Compilation 9% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://www.gu.se/sites/default/files/js/js_WuoLTi8hspulc5vOwt9fLLKA1wFQeSnNPA68u4iVXlc.js?scope=footer&delta=0&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ187ms81ms23ms3rd
https://www.gu.se/125ms1ms0ms3rd
Unattributable79ms4ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KZ7P6DN61ms42ms15ms3rd
A+
Font Loading
6 fonts (155 KB)
PASS
6 fonts (155 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

155 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 1.5 s 2.0 s 2.5 s FCP 1.4 s LCP 2.6 shttps://use.typekit.net/af/829fc1/00000000000000003b9acaf8/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3l https://use.typekit.net/af/829fc1/00000000000000003b9acaf8/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3 — 26.2 KiB — 25 ms — font-display: swaphttps://use.typekit.net/af/a2c82e/00000000000000003b9acaf4/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3l https://use.typekit.net/af/a2c82e/00000000000000003b9acaf4/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3 — 26.1 KiB — 33 ms — font-display: swaphttps://use.typekit.net/af/9871e5/00000000000000003b9acaf2/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n2&v=3l https://use.typekit.net/af/9871e5/00000000000000003b9acaf2/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n2&v=3 — 26.1 KiB — 19 ms — font-display: swaphttps://use.typekit.net/af/6d4bb2/00000000000000003b9acafc/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/6d4bb2/00000000000000003b9acafc/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 26.0 KiB — 29 ms — font-display: swaphttps://use.typekit.net/af/ac1071/00000000000000003b9acafe/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n8&v=3l https://use.typekit.net/af/ac1071/00000000000000003b9acafe/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n8&v=3 — 26.3 KiB — 27 ms — font-display: swaphttps://use.typekit.net/af/c4767b/00000000000000003b9acb20/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/c4767b/00000000000000003b9acb20/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 24.4 KiB — 25 ms — font-display: swap
l woff2 swap
Size 26 KB
Load time 25 ms
Start 593 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 33 ms
Start 593 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 19 ms
Start 594 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 29 ms
Start 594 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 27 ms
Start 594 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 24 KB
Load time 25 ms
Start 594 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
56 requests over 1390ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.4 s LCP 2.6 shttps://gu.se// https://gu.se/ — 301 — 171 B — 162 ms — http/1.1https://www.gu.se/www.gu.se/ https://www.gu.se/ — 200 — 44.5 KiB — 241 ms — http/1.1https://www.gu.se/sites/default/files/eu_cookie_compliance/eu_cookie_compliance.script.js?0www.gu.se/sites/default/files/eu_co... https://www.gu.se/sites/default/files/eu_cookie_compliance/eu_cookie_compliance.script.js?0 — 200 — 861 B — 203 ms — http/1.1https://www.gu.se/sites/default/files/css/css_jRthv8Wd6Z1NB2RGMM5SlrECvvILPa1wiTxNZuLShjQ.css?delta=0&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qgwww.gu.se/sites/default/files/css/c... https://www.gu.se/sites/default/files/css/css_jRthv8Wd6Z1NB2RGMM5SlrECvvILPa1wiTxNZuLShjQ.css?delta=0&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qg — 200 — 4.6 KiB — 131 ms — http/1.1https://www.gu.se/sites/default/files/css/css_jBG5GPZ2CP3UotHrWXQsvjsxas0-5Jb2ndgiHK-CM0k.css?delta=1&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qgwww.gu.se/sites/default/files/css/c... https://www.gu.se/sites/default/files/css/css_jBG5GPZ2CP3UotHrWXQsvjsxas0-5Jb2ndgiHK-CM0k.css?delta=1&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qg — 200 — 29.6 KiB — 188 ms — http/1.1https://www.gu.se/sites/default/files/css/css_orpyG37_oDlBF2Vjxq1PzjU0oSFnrjGoTBQ1Mfh2G-Y.css?delta=3&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qgwww.gu.se/sites/default/files/css/c... https://www.gu.se/sites/default/files/css/css_orpyG37_oDlBF2Vjxq1PzjU0oSFnrjGoTBQ1Mfh2G-Y.css?delta=3&language=sv&theme=gu_ruby&include=eJxtyEEOwyAMBMAPkfIk5JgVcuvgyJik_L499tDTSMPmyNXnSfqgJ70T_0QVUmsJs7DZS_DlOFWoM_K_LDs5UpvF574ycciFbcRS6S0pLZtRqgy2C76ydbBpGhK4paKQwiNLl_gABto6qg — 200 — 2.2 KiB — 150 ms — http/1.1https://www.gu.se/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1www.gu.se/core/assets/vendor/jquery... https://www.gu.se/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.1 — 200 — 27.6 KiB — 197 ms — http/1.1https://www.gu.se/sites/default/files/js/js_2O3j8pOXIfHS8h7oVhQVaC8hfA0O5FO8ppWoYwi7hUM.js?scope=header&delta=1&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQwww.gu.se/sites/default/files/js/js... https://www.gu.se/sites/default/files/js/js_2O3j8pOXIfHS8h7oVhQVaC8hfA0O5FO8ppWoYwi7hUM.js?scope=header&delta=1&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ — 200 — 6.8 KiB — 153 ms — http/1.1https://www.gu.se/modules/contrib/google_tag/js/gtag.js?tcpd9cwww.gu.se/modules/contrib/google_ta... https://www.gu.se/modules/contrib/google_tag/js/gtag.js?tcpd9c — 200 — 985 B — 155 ms — http/1.1https://www.gu.se/modules/contrib/google_tag/js/gtm.js?tcpd9cwww.gu.se/modules/contrib/google_ta... https://www.gu.se/modules/contrib/google_tag/js/gtm.js?tcpd9c — 200 — 909 B — 193 ms — http/1.1https://www.gu.se/sites/default/files/js/js_7v3GXr-s9t_I-ZUjcz0LsQeSA-PH9xEgF-yHjK-5-Rc.js?scope=header&delta=4&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQwww.gu.se/sites/default/files/js/js... https://www.gu.se/sites/default/files/js/js_7v3GXr-s9t_I-ZUjcz0LsQeSA-PH9xEgF-yHjK-5-Rc.js?scope=header&delta=4&language=sv&theme=gu_ruby&include=eJxtil0OAiEMhC-02iORyjZ1tICBonJ7lxcTiS_z881ID7GUO-Sw9DBwjkLyB25aipoEZyU9ZO1nvvH7F6ZNe9hH5oQYkFiFVjAfqZvDkLWz0dLnXvtlEEfHU07Nx1wmbsI1XumbtgaXF3YJbFKdkOEf-iNXTQ — 200 — 1.1 KiB — 198 ms — http/1.1https://use.typekit.net/zkx2sji.cssuse.typekit.net/zkx2sji.css https://use.typekit.net/zkx2sji.css — 200 — 1.1 KiB — 27 ms — 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http/1.1https://www.gu.se/sites/default/files/dynamic-image/dynamic_image_320_218/public/2024-07/Vi%20ta%CC%88nker%20pa%CC%8A%20romarriket.png?media_id=108358&width=302&height=200www.gu.se/sites/default/files/dynam... https://www.gu.se/sites/default/files/dynamic-image/dynamic_image_320_218/public/2024-07/Vi%20ta%CC%88nker%20pa%CC%8A%20romarriket.png?media_id=108358&width=302&height=200 — 200 — 116.5 KiB — 110 ms — http/1.1https://www.gu.se/sites/default/files/dynamic-image/dynamic_image_320_218/public/2026-04/Foto%20Christer%20Wil%C3%A9n.jpg.png?media_id=193719&width=302&height=200www.gu.se/sites/default/files/dynam... https://www.gu.se/sites/default/files/dynamic-image/dynamic_image_320_218/public/2026-04/Foto%20Christer%20Wil%C3%A9n.jpg.png?media_id=193719&width=302&height=200 — 200 — 126.5 KiB — 54 ms — 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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 452ms · 443KB · kr49/mo
www.gu.se
Other
Optional
Execution 187ms
Transfer 279 KB
Unused 65%
Monthly Cost kr20/mo
www.gu.se
Other
Optional
Execution 125ms
Transfer 44 KB
Monthly Cost kr14/mo
Unattributable
Other
Optional
Execution 79ms
Transfer 0 KB
Monthly Cost kr9/mo
Google Tag Manager
Tag Manager
Optional
Execution 61ms
Transfer 119 KB
Unused 56%
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

65% of www.gu.se'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

56% of Google Tag Manager'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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