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.
6.96 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
71.16 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.06 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.012
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.32 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.
76.10 s
Page Load Progression
834 ms 1.7 s
2.5 s
3.3 s
4.2 s
5.0 s
5.8 s
6.7 sFPage Weight BudgetAction22.4 MB transferred, 224 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
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 CostAction9936ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.fortnite.com/remix/assets/entry.client-Dsn7KdEs.js | 2915ms | 1039ms | 0ms | 3rd |
| https://www.fortnite.com/remix/assets/index-CXgk81OS.js | 2596ms | 1851ms | 0ms | 3rd |
| https://www.fortnite.com/ | 1598ms | 61ms | 22ms | 3rd |
| Unattributable | 1561ms | 169ms | 0ms | 3rd |
| https://components.unrealengine.com/navigation/navigation-CVNzITGf.mjs | 315ms | 267ms | 1ms | 3rd |
| https://js.hcaptcha.com/1/api.js?render=explicit&uj=true | 283ms | 219ms | 31ms | 3rd |
| https://www.fortnite.com/remix/assets/Animate-Bn0WMklH.js | 205ms | 66ms | 1ms | 3rd |
| https://www.fortnite.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 200ms | 191ms | 2ms | 3rd |
| https://www.fortnite.com/remix/assets/Hero-CI0u_pDC.js | 176ms | 176ms | 0ms | 3rd |
| https://components.unrealengine.com/footer/lit-shared-CfJu2WdS.mjs | 86ms | 74ms | 0ms | 3rd |
DJS BundlesAction81 scripts, 186 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.fortnite.com/remix/assets/index-BIqgl9dr.js | 108 KB | 54 KB (50%) | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/root-CdcTaEBE.js | 94 KB | 53 KB (56%) | ✓ | 3rd |
| https://js.hcaptcha.com/1/api.js?render=explicit&uj=true | 86 KB | 35 KB (41%) | ✓ | 3rd |
| https://components.unrealengine.com/footer/footer-jgytM29I.mjs | 31 KB | 23 KB (76%) | ✗ | 3rd |
| https://www.fortnite.com/remix/assets/Animate-Bn0WMklH.js | 41 KB | 23 KB (56%) | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/YouTubeDialog-CyBFPjOh.js | 1 KB | — | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/CommunityHighlightCard-gh2wn4IT.js | 4 KB | — | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/entry.client-Dsn7KdEs.js | 30 KB | — | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/chunk-OE4NN4TA-BIfSyywW.js | 43 KB | — | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/index-CXgk81OS.js | 43 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
DPage Weight InventoryAction224 resources · 22.4 MB · 186 KB savings availableFIX
~186.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 224 resources | 22.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction99 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
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 (967 KB)PASS
Web fonts
4
967 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~435 KB and ~870 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall224 requests over 4376msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.fortnite.com www.fortnite.com | Other | 2915ms | 30 KB | — | $39/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 2596ms | 43 KB | — | $34/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 1598ms | 46 KB | — | $21/mo | Costly |
Unattributable Unattributable | Other | 1561ms | 0 KB | — | $21/mo | Costly |
components.unrealengine.com components.unrealengine.com | Other | 315ms | 88 KB | — | $4/mo | Costly |
js.hcaptcha.com js.hcaptcha.com | Other | 283ms | 86 KB | 41% | $4/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 205ms | 41 KB | 56% | $3/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 200ms | 0 KB | — | $3/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 176ms | 6 KB | — | $2/mo | Optional |
components.unrealengine.com components.unrealengine.com | Other | 86ms | 9 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.fortnite.com adds 2915ms and costs ~$39/month
- www.fortnite.com adds 2596ms and costs ~$34/month
- www.fortnite.com adds 1598ms and costs ~$21/month
- Unattributable adds 1561ms and costs ~$21/month
- components.unrealengine.com adds 315ms and costs ~$4/month
- js.hcaptcha.com adds 283ms and costs ~$4/month
- www.fortnite.com adds 205ms and costs ~$3/month
- www.fortnite.com adds 200ms and costs ~$3/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.fortnite.com takes 2915ms 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.fortnite.com takes 2596ms 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.fortnite.com takes 1598ms 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 1561ms 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
components.unrealengine.com takes 315ms 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.hcaptcha.com takes 283ms 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.fortnite.com takes 205ms 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
56% of www.fortnite.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
www.fortnite.com takes 200ms 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