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.
2.09 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.07 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
534 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.86 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.
12.83 s
Page Load Progression
FPage Weight BudgetAction27.5 MB transferred, 217 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
DJS Execution CostAction2908ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.fortnite.com/remix/assets/entry.client-Dsn7KdEs.js | 964ms | 568ms | 0ms | 3rd |
| https://www.fortnite.com/remix/assets/index-CXgk81OS.js | 767ms | 595ms | 0ms | 3rd |
| Unattributable | 446ms | 51ms | 0ms | 3rd |
| https://www.fortnite.com/ | 443ms | 21ms | 7ms | 3rd |
| https://www.fortnite.com/remix/assets/Hero-CI0u_pDC.js | 90ms | 90ms | 0ms | 3rd |
| https://www.fortnite.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 82ms | 73ms | 0ms | 3rd |
| https://js.hcaptcha.com/1/api.js?render=explicit&uj=true | 61ms | 41ms | 7ms | 3rd |
| https://www.fortnite.com/remix/assets/Animate-Bn0WMklH.js | 55ms | 18ms | 0ms | 3rd |
DJS BundlesAction81 scripts, 187 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/Card-DWOTOBbu.js | 2 KB | — | ✓ | 3rd |
| https://www.fortnite.com/remix/assets/useIsRtl-CzuWGr6m.js | 1 KB | — | ✓ | 3rd |
| https://tracking.fortnite.com/tracking.js?p=fortnite&l=en-US | 25 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 |
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 InventoryAction217 resources · 27.5 MB · 187 KB savings availableFIX
~186.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 217 resources | 27.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction93 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
Network Waterfall217 requests over 4574msINFO
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 | 964ms | 30 KB | — | $13/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 767ms | 44 KB | — | $10/mo | Costly |
Unattributable Unattributable | Other | 446ms | 0 KB | — | $6/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 443ms | 46 KB | — | $6/mo | Costly |
www.fortnite.com www.fortnite.com | Other | 90ms | 6 KB | — | $1/mo | Optional |
www.fortnite.com www.fortnite.com | Other | 82ms | 0 KB | — | $1/mo | Optional |
js.hcaptcha.com js.hcaptcha.com | Other | 61ms | 86 KB | 41% | $1/mo | Optional |
www.fortnite.com www.fortnite.com | Other | 55ms | 41 KB | 56% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.fortnite.com adds 964ms and costs ~$13/month
- www.fortnite.com adds 767ms and costs ~$10/month
- Unattributable adds 446ms and costs ~$6/month
- www.fortnite.com adds 443ms and costs ~$6/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 964ms 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 767ms 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 446ms 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 443ms 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