Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.56 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.61 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.70 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.040
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.71 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.
18.93 s
Page Load Progression
738 ms
1.5 s
2.2 s
3.0 s 3.7 s
4.4 s
5.2 s
5.9 sFPage Weight BudgetAction7.9 MB transferred, 167 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction10287ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.cirquedusoleil.com/dist/v3/cds/ver20260414/js/app.cds.js | 2715ms | 1051ms | 5ms | 3rd |
| Unattributable | 1554ms | 345ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17062073898&cx=c>m=4e64k1 | 1282ms | 1160ms | 51ms | 3rd |
| https://www.cirquedusoleil.com/ | 1085ms | 61ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MNVPM8 | 871ms | 693ms | 107ms | 3rd |
| https://api.fouanalytics.com/api/init-6136zrgr6vs5tqpq3ltu.js | 554ms | 394ms | 2ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202509.1.0/otBannerSdk.js | 379ms | 214ms | 62ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DVBKD0H3VF&cx=c>m=4e64k1 | 324ms | 258ms | 61ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 291ms | 268ms | 10ms | 3rd |
| https://js.monitor.azure.com/scripts/b/ai.3.gbl.min.js | 236ms | 182ms | 22ms | 3rd |
Showing top 10 of 18 scripts
FJS BundlesAction46 scripts, 599 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.cirquedusoleil.com/dist/v3/cds/ver20260414/js/app.cds.js | 221 KB | 125 KB (57%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202509.1.0/otBannerSdk.js | 122 KB | 63 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DVBKD0H3VF&cx=c>m=4e64k1 | 172 KB | 63 KB (37%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-16509702&cx=c>m=4e64k1 | 129 KB | 57 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17062073898&cx=c>m=4e64k1 | 144 KB | 56 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-16582949&cx=c>m=4e64k1 | 129 KB | 56 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17062100749&cx=c>m=4e64k1 | 144 KB | 55 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MNVPM8 | 211 KB | 53 KB (25%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 47 KB (49%) | ✓ | 3rd |
| https://js.monitor.azure.com/scripts/b/ai.3.gbl.min.js | 67 KB | 24 KB (36%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction167 resources · 7.9 MB · 599 KB savings availableFIX
~598.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 167 resources | 7.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction52 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (97 KB)PASS
Web fonts
4
97 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall167 requests over 5584msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.cirquedusoleil.com www.cirquedusoleil.com | Other | 2715ms | 221 KB | 57% | €14/mo | Costly |
Unattributable Unattributable | Other | 1554ms | 0 KB | — | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 1282ms | 144 KB | 39% | €7/mo | Costly |
www.cirquedusoleil.com www.cirquedusoleil.com | Other | 1085ms | 35 KB | — | €6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 871ms | 211 KB | 25% | €5/mo | Costly |
api.fouanalytics.com api.fouanalytics.com | Other | 554ms | 8 KB | — | €3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 379ms | 122 KB | 52% | €2/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 324ms | 172 KB | 37% | €2/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 291ms | 26 KB | — | €2/mo | Costly |
js.monitor.azure.com js.monitor.azure.com | Other | 236ms | 67 KB | 36% | €1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 216ms | 144 KB | 38% | €1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 188ms | 129 KB | 43% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 182ms | 129 KB | 44% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 154ms | 97 KB | 49% | €1/mo | Optional |
secure.quantserve.com secure.quantserve.com | Other | 80ms | 12 KB | — | €0/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 69ms | 9 KB | — | €0/mo | Essential |
js.adsrvr.org js.adsrvr.org | Other | 54ms | 12 KB | — | €0/mo | Optional |
www.cirquedusoleil.com www.cirquedusoleil.com | Other | 53ms | 64 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- www.cirquedusoleil.com adds 2715ms and costs ~€14/month
- Unattributable adds 1554ms and costs ~€8/month
- Google Tag Manager adds 1282ms and costs ~€7/month
- www.cirquedusoleil.com adds 1085ms and costs ~€6/month
- Google Tag Manager adds 871ms and costs ~€5/month
- api.fouanalytics.com adds 554ms and costs ~€3/month
- Google Tag Manager adds 324ms and costs ~€2/month
- Microsoft Clarity adds 291ms and costs ~€2/month
- js.monitor.azure.com adds 236ms and costs ~€1/month
- Google Tag Manager adds 216ms and costs ~€1/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
www.cirquedusoleil.com takes 2715ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
57% of www.cirquedusoleil.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Unattributable takes 1554ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 1282ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.cirquedusoleil.com takes 1085ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 871ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
api.fouanalytics.com takes 554ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
52% of OneTrust's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 324ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Microsoft Clarity takes 291ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
js.monitor.azure.com takes 236ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 216ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev