Performance
· 15 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.
1.75 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
310 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.028
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.93 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.
5.50 s
Page Load Progression
FPage Weight BudgetAction3.9 MB transferred, 79 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2362ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://nl.movember.com/ | 744ms | 3ms | 1ms | 3rd |
| https://nl.movember.com/static/js/main.af82aa93.js | 386ms | 284ms | 38ms | 3rd |
| Unattributable | 284ms | 35ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KKFPTZN | 241ms | 179ms | 25ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T4M6JQ | 206ms | 164ms | 33ms | 3rd |
| https://cdn-au.onetrust.com/scripttemplates/202601.1.0/otBannerSdk.js | 171ms | 116ms | 28ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8VW6D9TZ36&cx=c>m=4e64k1 | 162ms | 137ms | 20ms | 3rd |
| https://cdn.optimizely.com/js/24139460674.js | 102ms | 84ms | 15ms | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 66ms | 35ms | 30ms | 3rd |
DJS BundlesAction15 scripts, 472 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://nl.movember.com/static/js/main.af82aa93.js | 240 KB | 104 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KKFPTZN | 180 KB | 71 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T4M6JQ | 206 KB | 67 KB (32%) | ✓ | 3rd |
| https://cdn-au.onetrust.com/scripttemplates/202601.1.0/otBannerSdk.js | 127 KB | 66 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8VW6D9TZ36&cx=c>m=4e64k1 | 171 KB | 65 KB (38%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 78 KB | 56 KB (72%) | ✓ | 3rd |
| https://cdn.optimizely.com/js/24139460674.js | 95 KB | 43 KB (46%) | ✓ | 3rd |
| https://cdn-au.onetrust.com/scripttemplates/otSDKStub.js | 9 KB | — | ✓ | 3rd |
| https://www.youtube.com/s/player/1bb6ee63/www-widgetapi.vflset/www-widgetapi.js | 11 KB | — | ✓ | 3rd |
| https://cdn-au.onetrust.com/consent/ea5960ce-518b-4f0c-be23-59cff9958b91/ea5960ce-518b-4f0c-be23-59cff9958b91.json | 3 KB | — | ✓ | 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 InventoryAction79 resources · 3.9 MB · 472 KB savings availableFIX
~472.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 79 resources | 3.9 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
no-store, no-cache, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
CImage OptimizationAction33 images, 0 KB saveableREVIEW
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 Loading8 fonts (820 KB)PASS
Web fonts
8
820 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~523 KB and ~1046 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall79 requests over 4867msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
nl.movember.com nl.movember.com | Other | 744ms | 74 KB | — | €8/mo | Costly |
nl.movember.com nl.movember.com | Other | 386ms | 240 KB | 43% | €4/mo | Costly |
Unattributable Unattributable | Other | 284ms | 0 KB | — | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 241ms | 180 KB | 40% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 206ms | 206 KB | 32% | €2/mo | Costly |
cdn-au.onetrust.com cdn-au.onetrust.com | Other | 171ms | 127 KB | 52% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 162ms | 171 KB | 38% | €2/mo | Optional |
Optimizely cdn.optimizely.com | A/B Testing | 102ms | 95 KB | 46% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 66ms | 78 KB | 72% | €1/mo | Optional |
These scripts may cost more than they're worth
- nl.movember.com adds 744ms and costs ~€8/month
- nl.movember.com adds 386ms and costs ~€4/month
- Unattributable adds 284ms and costs ~€3/month
- Google Tag Manager adds 241ms and costs ~€3/month
- Google Tag Manager adds 206ms and costs ~€2/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
nl.movember.com takes 744ms 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
nl.movember.com takes 386ms 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
Unattributable takes 284ms 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 241ms 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 206ms 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 cdn-au.onetrust.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
72% of Facebook Pixel'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