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https://norwegian.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
43
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

2.34 s

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

10.40 s

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

2.24 s

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.

3.71 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.

10.96 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
8 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 (1.2 MiB of 1.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4854ms total JS execution
FIX
4854ms total JS execution
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NVL...: 1437ms CPU time
Warning::
Unattributable: 730ms CPU time
Warning::
https://cdn.cookielaw.org/scripttemplates/202502.1...: 499ms CPU time
Warning::
https://www.norwegian.com/script-bundle/lazysizes....: 486ms CPU time
Warning::
https://www.norwegian.com/cdn-cgi/challenge-platfo...: 373ms CPU time
Warning::
Third-party scripts: 4854ms (100% of total)

Main Thread Breakdown

Script Evaluation 60% Other 21% Script Parsing & Compilation 8% Style & Layout 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtm.js?id=GTM-NVL4JDR1437ms1221ms103ms3rd
Unattributable730ms207ms0ms3rd
https://cdn.cookielaw.org/scripttemplates/202502.1.0/otBannerSdk.js499ms229ms110ms3rd
https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycI486ms73ms1ms3rd
https://www.norwegian.com/cdn-cgi/challenge-platform/scripts/jsd/main.js373ms356ms3ms3rd
https://www.norwegian.com/354ms63ms10ms3rd
https://www.googletagmanager.com/gtag/js?id=G-XMQZZ1BMXF&cx=c&gtm=4e64e1&bs=ctrl345ms271ms62ms3rd
https://js.monitor.azure.com/scripts/b/ai.2.gbl.min.js276ms216ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=DC-5877806&cx=c&gtm=4e64e1&bs=ctrl239ms188ms49ms3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js57ms37ms5ms3rd

Showing top 10 of 11 scripts

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
Page Weight Budget
1.2 MB transferred, 57 requests
REVIEW
1.2 MB transferred, 57 requests
Info::
Page weighs 3.8 MB (1.2 MB transferred)
Warning::
JavaScript is 707 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 707 KB
Info::
Fonts are 203 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 203 KB
Info::
57 HTTP requests
Info::
Estimated 0.25 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
57 requests
0.25 g CO2 per page load
JavaScript 706.6 KiB 57%
Fonts 202.6 KiB 16%
Images 187.3 KiB 15%
CSS 73.6 KiB 6%
Other 52.3 KiB 4%
HTML 9.1 KiB 1%
Other 4.0 KiB 0%
Other 1.7 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://www.norwegian.com/Content/img/ident-mobile... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 187 KB
0 oversized -0 KB
18 legacy format
1 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

C
JS Bundles
Action
12 scripts, 240 KB unused
REVIEW
12 scripts, 240 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XMQZ...: 66 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=DC-587...: 59 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202502.1...: 59 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NVL...: 56 KB unused (26%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 240 KB
240 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-XMQZZ1BMXF&cx=c&gtm=4e64e1&bs=ctrl161 KB66 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-5877806&cx=c&gtm=4e64e1&bs=ctrl131 KB59 KB (45%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202502.1.0/otBannerSdk.js115 KB59 KB (51%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NVL4JDR214 KB56 KB (26%)✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js9 KB—✓3rd
https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycI3 KB—✓3rd
https://www.norwegian.com/script-bundle/accessibility-cookie.js?v=dXpbs49Ir3bAAlKNQptp2tiYm3Y0 KB—✓3rd
https://www.norwegian.com/Util/Find/epi-util/find.js2 KB—✓3rd
https://www.norwegian.com/script-bundle/plainPageController.js?v=BA6egZn3-V1L5_2N_-SPETqfXO42 KB—✓3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 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

C
Page Weight Inventory
Action
57 resources · 1.2 MB · 240 KB savings available
REVIEW
57 resources · 1.2 MB · 240 KB savings available
Warning::
Page weight 213 KB over 1MB target
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~240 KB of savings available
Warning::
56 third-party resources (100% of weight)
Info::
1 resources over 200KB
57 resources · 1.2 MiB · 56 third-party 213.3 KiB over 1MB target
JavaScript 57% · 706.6 KiB
Font 16% · 202.6 KiB
Image 15% · 188.9 KiB
CSS 6% · 77.9 KiB
Other 4% · 52.1 KiB
Document 1% · 9.1 KiB

~240.1 KiB of savings available

Remove unused JavaScript: 240.1 KiB
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
7 fonts (203 KB)
PASS
7 fonts (203 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

203 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 2.3 s LCP 10.4 shttps://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2NorwegianTextPro-Bold.w... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2 — 29.3 KiB — 18 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2NorwegianTextPro-Regula... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2 — 28.7 KiB — 37 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2NorwegianDisplayPro-Bol... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2 — 28.9 KiB — 25 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2NorwegianDisplayPro-Reg... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2 — 28.8 KiB — 21 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVENorwegianTextPro-Regula... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVE — 28.6 KiB — 17 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVENorwegianDisplayPro-Bol... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVE — 29.0 KiB — 14 ms — font-display: swaphttps://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVENorwegianTextPro-Bold.w... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVE — 29.3 KiB — 16 ms — font-display: swap
NorwegianTextPro-Bold.w... woff2 swap
Size 29 KB
Load time 18 ms
Start 285 ms
Risk FOUT — text flashes from fallback to web font
NorwegianTextPro-Regula... woff2 swap
Size 29 KB
Load time 37 ms
Start 285 ms
Risk FOUT — text flashes from fallback to web font
NorwegianDisplayPro-Bol... woff2 swap
Size 29 KB
Load time 25 ms
Start 285 ms
Risk FOUT — text flashes from fallback to web font
NorwegianDisplayPro-Reg... woff2 swap
Size 29 KB
Load time 21 ms
Start 286 ms
Risk FOUT — text flashes from fallback to web font
NorwegianTextPro-Regula... woff2 swap
Size 29 KB
Load time 17 ms
Start 385 ms
Risk FOUT — text flashes from fallback to web font
NorwegianDisplayPro-Bol... woff2 swap
Size 29 KB
Load time 14 ms
Start 385 ms
Risk FOUT — text flashes from fallback to web font
NorwegianTextPro-Bold.w... woff2 swap
Size 29 KB
Load time 16 ms
Start 1.3 s
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+
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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
57 requests over 2238ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 2.3 s LCP 10.4 shttps://norwegian.com// https://norwegian.com/ — 301 — 295 B — 12 ms — h2https://www.norwegian.com/www.norwegian.com/ https://www.norwegian.com/ — 200 — 9.1 KiB — 265 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 33 ms — h2https://www.norwegian.com/style-bundle/cms-brand.css?v=bLHHIb7YsgNRVYXxfbSQhVOIMeIwww.norwegian.com/style-bundle/cms-... https://www.norwegian.com/style-bundle/cms-brand.css?v=bLHHIb7YsgNRVYXxfbSQhVOIMeI — 200 — 73.6 KiB — 39 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2 — 200 — 29.3 KiB — 18 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2 — 200 — 28.7 KiB — 37 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2 — 200 — 28.9 KiB — 25 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2 — 200 — 28.8 KiB — 21 ms — h2https://www.norwegian.com/Content/img/ident.svgwww.norwegian.com/Content/img/ident... https://www.norwegian.com/Content/img/ident.svg — 200 — 2.1 KiB — 26 ms — h2https://www.norwegian.com/Content/img/ident-mobile.svgwww.norwegian.com/Content/img/ident... https://www.norwegian.com/Content/img/ident-mobile.svg — 200 — 1.5 KiB — 33 ms — h2https://cdn.cookielaw.org/consent/01954228-a71d-776f-8b32-db7d22438f0f/01954228-a71d-776f-8b32-db7d22438f0f.jsoncdn.cookielaw.org/consent/01954228-... https://cdn.cookielaw.org/consent/01954228-a71d-776f-8b32-db7d22438f0f/01954228-a71d-776f-8b32-db7d22438f0f.json — 200 — 2.5 KiB — 32 ms — h2https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycIwww.norwegian.com/script-bundle/laz... https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycI — 200 — 3.4 KiB — 16 ms — h2https://www.norwegian.com/script-bundle/accessibility-cookie.js?v=dXpbs49Ir3bAAlKNQptp2tiYm3Ywww.norwegian.com/script-bundle/acc... https://www.norwegian.com/script-bundle/accessibility-cookie.js?v=dXpbs49Ir3bAAlKNQptp2tiYm3Y — 200 — 320 B — 18 ms — h2https://www.norwegian.com/Util/Find/epi-util/find.jswww.norwegian.com/Util/Find/epi-uti... https://www.norwegian.com/Util/Find/epi-util/find.js — 200 — 2.3 KiB — 21 ms — h2https://www.norwegian.com/script-bundle/plainPageController.js?v=BA6egZn3-V1L5_2N_-SPETqfXO4www.norwegian.com/script-bundle/pla... https://www.norwegian.com/script-bundle/plainPageController.js?v=BA6egZn3-V1L5_2N_-SPETqfXO4 — 200 — 2.3 KiB — 19 ms — h2https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 19 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-NVL4JDRwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-NVL4JDR — 200 — 214.2 KiB — 128 ms — h2https://js.monitor.azure.com/scripts/b/ai.2.gbl.min.jsjs.monitor.azure.com/scripts/b/ai.2... https://js.monitor.azure.com/scripts/b/ai.2.gbl.min.js — 200 — 46.2 KiB — 30 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVEwww.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVE — 200 — 28.6 KiB — 17 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVEwww.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2?v=2yPPwIqAJFd8grPAhs0-mcvOmVE — 200 — 29.0 KiB — 14 ms — h2https://geolocation.onetrust.com/cookieconsentpub/v1/geo/locationgeolocation.onetrust.com/cookiecons... https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location — 200 — 295 B — 39 ms — h2https://www.norwegian.com/cdn-cgi/challenge-platform/scripts/jsd/main.jswww.norwegian.com/cdn-cgi/challenge... https://www.norwegian.com/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 379 B — 16 ms — h2https://www.norwegian.com/Images/countries-flags/dk.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/dk.svg — 200 — 4.4 KiB — 37 ms — h2https://www.norwegian.com/Images/countries-flags/de.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/de.svg — 200 — 4.5 KiB — 41 ms — h2https://www.norwegian.com/Images/countries-flags/es.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/es.svg — 200 — 49.1 KiB — 54 ms — h2https://www.norwegian.com/Images/countries-flags/fi.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/fi.svg — 200 — 6.0 KiB — 30 ms — h2https://www.norwegian.com/Images/countries-flags/fr.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/fr.svg — 200 — 4.2 KiB — 34 ms — h2https://www.norwegian.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/b0a7532ac8ec/main.js?www.norwegian.com/cdn-cgi/challenge... https://www.norwegian.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/b0a7532ac8ec/main.js? — 200 — 11.8 KiB — 16 ms — h2https://www.norwegian.com/Images/countries-flags/pl.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/pl.svg — 200 — 4.6 KiB — 34 ms — h2https://www.norwegian.com/Images/countries-flags/nl.svgwww.norwegian.com/Images/countries-... https://www.norwegian.com/Images/countries-flags/nl.svg — 200 — 4.5 KiB — 30 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 2.3 s LCP 10.4 shttps://norwegian.com// https://norwegian.com/ — 301 — 295 B — 12 ms — h2https://www.norwegian.com/www.norwegian.com/ https://www.norwegian.com/ — 200 — 9.1 KiB — 265 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 33 ms — h2https://www.norwegian.com/style-bundle/cms-brand.css?v=bLHHIb7YsgNRVYXxfbSQhVOIMeIwww.norwegian.com/style-bundle/cms-... https://www.norwegian.com/style-bundle/cms-brand.css?v=bLHHIb7YsgNRVYXxfbSQhVOIMeI — 200 — 73.6 KiB — 39 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Bold.woff2 — 200 — 29.3 KiB — 18 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianTextPro-Regular.woff2 — 200 — 28.7 KiB — 37 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Bold.woff2 — 200 — 28.9 KiB — 25 ms — h2https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2www.norwegian.com/Content/webfonts/... https://www.norwegian.com/Content/webfonts/NorwegianDisplayPro-Regular.woff2 — 200 — 28.8 KiB — 21 ms — h2https://www.norwegian.com/Content/img/ident.svgwww.norwegian.com/Content/img/ident... https://www.norwegian.com/Content/img/ident.svg — 200 — 2.1 KiB — 26 ms — h2https://www.norwegian.com/Content/img/ident-mobile.svgwww.norwegian.com/Content/img/ident... https://www.norwegian.com/Content/img/ident-mobile.svg — 200 — 1.5 KiB — 33 ms — h2https://cdn.cookielaw.org/consent/01954228-a71d-776f-8b32-db7d22438f0f/01954228-a71d-776f-8b32-db7d22438f0f.jsoncdn.cookielaw.org/consent/01954228-... https://cdn.cookielaw.org/consent/01954228-a71d-776f-8b32-db7d22438f0f/01954228-a71d-776f-8b32-db7d22438f0f.json — 200 — 2.5 KiB — 32 ms — h2https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycIwww.norwegian.com/script-bundle/laz... https://www.norwegian.com/script-bundle/lazysizes.js?v=3HmW99h1vglLXWpaWVnJHw-kycI — 200 — 3.4 KiB — 16 ms — h2https://www.norwegian.com/script-bundle/accessibility-cookie.js?v=dXpbs49Ir3bAAlKNQptp2tiYm3Ywww.norwegian.com/script-bundle/acc... https://www.norwegian.com/script-bundle/accessibility-cookie.js?v=dXpbs49Ir3bAAlKNQptp2tiYm3Y — 200 — 320 B — 18 ms — h2https://www.norwegian.com/Util/Find/epi-util/find.jswww.norwegian.com/Util/Find/epi-uti... https://www.norwegian.com/Util/Find/epi-util/find.js — 200 — 2.3 KiB — 21 ms — 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204 — 0 B — 476 ms — h2https://www.norwegian.com/cdn-cgi/rum?www.norwegian.com/cdn-cgi/rum? https://www.norwegian.com/cdn-cgi/rum? — 204 — 192 B — 6 ms — h2https://www.norwegian.com/favicon.icowww.norwegian.com/favicon.ico https://www.norwegian.com/favicon.ico — 200 — 376 B — 12 ms — h2https://www.norwegian.com/favicon.svgwww.norwegian.com/favicon.svg https://www.norwegian.com/favicon.svg — 200 — 719 B — 13 ms — h2https://dc.services.visualstudio.com/v2/trackdc.services.visualstudio.com/v2/tra... https://dc.services.visualstudio.com/v2/track — 200 — 200 B — 360 ms — h2
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 4854ms · 699KB · $64/mo
Google Tag Manager
Tag Manager
Costly
Execution 1437ms
Transfer 214 KB
Unused 26%
Monthly Cost $19/mo
Unattributable
Other
Costly
Execution 730ms
Transfer 0 KB
Monthly Cost $10/mo
OneTrust
Consent
Essential
Execution 499ms
Transfer 115 KB
Unused 51%
Monthly Cost $7/mo
www.norwegian.com
Other
Costly
Execution 486ms
Transfer 3 KB
Monthly Cost $6/mo
www.norwegian.com
Other
Costly
Execution 373ms
Transfer 0 KB
Monthly Cost $5/mo
www.norwegian.com
Other
Costly
Execution 354ms
Transfer 9 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 345ms
Transfer 161 KB
Unused 41%
Monthly Cost $5/mo
js.monitor.azure.com
Other
Costly
Execution 276ms
Transfer 46 KB
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 239ms
Transfer 131 KB
Unused 45%
Monthly Cost $3/mo
OneTrust
Consent
Essential
Execution 57ms
Transfer 9 KB
Monthly Cost $1/mo
static.cloudflareinsights.com
Other
Optional
Execution 56ms
Transfer 11 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 1437ms and costs ~$19/month
  • Unattributable adds 730ms and costs ~$10/month
  • www.norwegian.com adds 486ms and costs ~$6/month
  • www.norwegian.com adds 373ms and costs ~$5/month
  • www.norwegian.com adds 354ms and costs ~$5/month
  • Google Tag Manager adds 345ms and costs ~$5/month
  • js.monitor.azure.com adds 276ms and costs ~$4/month
  • Google Tag Manager adds 239ms and costs ~$3/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.

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

Google Tag Manager takes 1437ms 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 730ms 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

51% of OneTrust'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

www.norwegian.com takes 486ms 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

www.norwegian.com takes 373ms 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

www.norwegian.com takes 354ms 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

Google Tag Manager takes 345ms 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

js.monitor.azure.com takes 276ms 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

Google Tag Manager takes 239ms 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

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