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.
4.01 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
34.07 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
5.45 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.86 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.
36.47 s
Page Load Progression
FPage Weight BudgetAction10.1 MB transferred, 74 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 ImpactAction98% third-party, 0 ms blockingFIX
FJS Execution CostAction16406ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://f.vimeocdn.com/cms/_next/static/chunks/698-5da58f5cf9153be6.js | 9568ms | 7630ms | 32ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/7004-103594b2afdcd46e.js | 2057ms | 1734ms | 302ms | 3rd |
| https://livestream.com/ | 1200ms | 12ms | 137ms | 1st |
| Unattributable | 1025ms | 19ms | 0ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/app/layout-039500de7fd6b7ea.js | 933ms | 883ms | 1ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/87c73c54-2f5738581333eb5d.js | 494ms | 329ms | 22ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/fb6eed97-c082b83595dcab0f.js | 449ms | 1ms | 447ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/5904-5fb81b6604430f9b.js | 240ms | 94ms | 99ms | 3rd |
| https://transcend-cdn.com/cm/31e97cbf-355c-4f0d-8bad-9cd945121508/airgap.js | 225ms | 205ms | 20ms | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/6325-c5fad217c6b27322.js | 150ms | 2ms | 148ms | 3rd |
Showing top 10 of 11 scripts
FJS BundlesAction23 scripts, 1.9 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://f.vimeocdn.com/cms/_next/static/chunks/fb6eed97-c082b83595dcab0f.js | 945 KB | 712 KB (75%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/7004-103594b2afdcd46e.js | 762 KB | 550 KB (72%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/6325-c5fad217c6b27322.js | 298 KB | 279 KB (94%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/5904-5fb81b6604430f9b.js | 290 KB | 140 KB (50%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/1297-19fdaa9b96e8667e.js | 149 KB | 113 KB (76%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/47bf8baf-ff6d80ce081d930a.js | 75 KB | 65 KB (87%) | ✓ | 3rd |
| https://transcend-cdn.com/cm/31e97cbf-355c-4f0d-8bad-9cd945121508/airgap.js | 51 KB | 25 KB (49%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/1f006d11-126966d710541477.js | 27 KB | 24 KB (90%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/620c25d9-0df1db621b3c20e6.js | 29 KB | 23 KB (82%) | ✓ | 3rd |
| https://f.vimeocdn.com/cms/_next/static/chunks/698-5da58f5cf9153be6.js | 45 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 InventoryAction74 resources · 10.1 MB · 1.9 MB savings availableFIX
~1.9 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 74 resources | 10.1 MiB | ||||||
CImage OptimizationAction21 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
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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (2410 KB)PASS
Web fonts
7
2410 KB total
Render-blocking
0
of 7
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
- 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
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 ~1760 KB and ~3520 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints16 hints, 0 missing preconnectsPASS
Current Resource Hints
16 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=1800 (30 minutes)PASS
public, max-age=1800, s-maxage=1800, stale-while-revalidate=86400
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 1800 | Cache for 30 minutes |
| s-maxage | 1800 | CDN caches for 30 minutes |
| stale-while-revalidate | 86400 | Serve stale for 1 day while fetching fresh |
Network Waterfall74 requests over 5257msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
f.vimeocdn.com f.vimeocdn.com | Other | 9568ms | 45 KB | — | €51/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 2057ms | 762 KB | 72% | €11/mo | Costly |
Unattributable Unattributable | Other | 1025ms | 0 KB | — | €5/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 933ms | 1 KB | — | €5/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 494ms | 53 KB | — | €3/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 449ms | 945 KB | 75% | €2/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 240ms | 290 KB | 50% | €1/mo | Costly |
transcend-cdn.com transcend-cdn.com | Other | 225ms | 51 KB | 49% | €1/mo | Costly |
f.vimeocdn.com f.vimeocdn.com | Other | 150ms | 298 KB | 94% | €1/mo | Optional |
f.vimeocdn.com f.vimeocdn.com | Other | 65ms | 149 KB | 76% | €0/mo | Optional |
These scripts may cost more than they're worth
- f.vimeocdn.com adds 9568ms and costs ~€51/month
- f.vimeocdn.com adds 2057ms and costs ~€11/month
- Unattributable adds 1025ms and costs ~€5/month
- f.vimeocdn.com adds 933ms and costs ~€5/month
- f.vimeocdn.com adds 494ms and costs ~€3/month
- f.vimeocdn.com adds 449ms and costs ~€2/month
- f.vimeocdn.com adds 240ms and costs ~€1/month
- transcend-cdn.com adds 225ms and costs ~€1/month
93% 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
f.vimeocdn.com takes 9568ms 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
f.vimeocdn.com takes 2057ms 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
72% of f.vimeocdn.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 1025ms 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
f.vimeocdn.com takes 933ms 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
f.vimeocdn.com takes 494ms 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
f.vimeocdn.com takes 449ms 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
75% of f.vimeocdn.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
f.vimeocdn.com takes 240ms 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
transcend-cdn.com takes 225ms 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
94% of f.vimeocdn.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
76% of f.vimeocdn.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