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.
2.85 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.03 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
208 ms
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.
4.12 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.
10.14 s
Page Load Progression
FPage Weight BudgetAction3.5 MB transferred, 63 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
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 CostAction2512ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://pixieset.com/ | 1010ms | 36ms | 2ms | 3rd |
| https://pixieset.com/_next/static/chunks/framework-64ad27b21261a9ce.js | 437ms | 372ms | 13ms | 3rd |
| Unattributable | 411ms | 18ms | 0ms | 3rd |
| https://pixieset.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 223ms | 212ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TLR3Q8Z | 160ms | 121ms | 37ms | 3rd |
| https://pixieset.com/_next/static/chunks/pages/_app-8fe6b7892c4f9eb8.js | 122ms | 87ms | 33ms | 3rd |
| https://kit.fontawesome.com/4aee07184f.js | 98ms | 95ms | 1ms | 3rd |
| https://pixieset.com/_next/static/chunks/main-ae335ae36e517740.js | 51ms | 41ms | 7ms | 3rd |
DPage Weight InventoryAction63 resources · 3.5 MB · 172 KB savings availableFIX
~171.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 63 resources | 3.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization17 images, 0 KB saveableREVIEW
CJS BundlesAction16 scripts, 172 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-TLR3Q8Z | 154 KB | 85 KB (55%) | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/pages/_app-8fe6b7892c4f9eb8.js | 115 KB | 61 KB (53%) | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/608-25c90fc53c0df4f0.js | 36 KB | 26 KB (72%) | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/pages/index-01f0f9b574ead1af.js | 6 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/129-c459fc7dfb514362.js | 3 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/382-2e197d1f7a5a8ad9.js | 7 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/main-ae335ae36e517740.js | 32 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/682-ea43cf87803a808d.js | 4 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/chunks/webpack-38cee4c0e358b1a3.js | 1 KB | — | ✓ | 3rd |
| https://pixieset.com/_next/static/t9U3JFlxFdq8uwc8gHGd4/_buildManifest.js | 1 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading12 fonts (289 KB)PASS
Web fonts
12
289 KB total
Render-blocking
0
of 12
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 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
Network Waterfall63 requests over 2075msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
pixieset.com pixieset.com | Other | 1010ms | 36 KB | — | €16/mo | Costly |
pixieset.com pixieset.com | Other | 437ms | 43 KB | — | €7/mo | Costly |
Unattributable Unattributable | Other | 411ms | 0 KB | — | €7/mo | Costly |
pixieset.com pixieset.com | Other | 223ms | 0 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 160ms | 154 KB | 55% | €3/mo | Optional |
pixieset.com pixieset.com | Other | 122ms | 115 KB | 53% | €2/mo | Optional |
kit.fontawesome.com kit.fontawesome.com | Other | 98ms | 6 KB | — | €2/mo | Optional |
pixieset.com pixieset.com | Other | 51ms | 32 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- pixieset.com adds 1010ms and costs ~€16/month
- pixieset.com adds 437ms and costs ~€7/month
- Unattributable adds 411ms and costs ~€7/month
- pixieset.com adds 223ms and costs ~€4/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
pixieset.com takes 1010ms 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
pixieset.com takes 437ms 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 411ms 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
pixieset.com takes 223ms 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
55% of Google Tag Manager'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
53% of pixieset.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