Performance
· 22 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.
544 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.75 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
182 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.
1.60 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.
3.66 s
Page Load Progression
DJS Execution CostAction2795ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://omnisphere.xaiproperties.com/_next/static/chunks/23a8xs75w-uf9.js | 1423ms | 164ms | 47ms | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/1ibkovy6w94vf.js | 424ms | 25ms | 6ms | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/2n_95vkrc_bfl.js | 410ms | 346ms | 5ms | 1st |
| Unattributable | 177ms | 32ms | 0ms | 1st |
| https://omnisphere.xaiproperties.com/ | 129ms | 20ms | 4ms | 1st |
| https://omnisphere.xaiproperties.com/fgi3/OcJhDLvri0e9OshuhcFOCTPf1dABmf7QQSuS5iC4sVvayYc6 | 86ms | 76ms | 9ms | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/1q512agfcb8xv.js | 82ms | 16ms | 0ms | 1st |
| https://omnisphere.xaiproperties.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 64ms | 59ms | 1ms | 1st |
FJS BundlesAction36 scripts, 548 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-XVYTRKVLJP | 176 KB | 122 KB (69%) | ✓ | 3rd |
| https://omnisphere.xaiproperties.com/_next/static/chunks/23a8xs75w-uf9.js | 237 KB | 120 KB (51%) | ✓ | 1st |
| https://omnisphere.xaiproperties.com/fgi3/OcJhDLvri0e9OshuhcFOCTPf1dABmf7QQSuS5iC4sVvayYc6 | 185 KB | 79 KB (43%) | ✓ | 1st |
| https://omnisphere.xaiproperties.com/fgi3/ | 122 KB | 74 KB (61%) | ✓ | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-WVNDMQVG | 116 KB | 73 KB (63%) | ✓ | 3rd |
| https://omnisphere.xaiproperties.com/_next/static/chunks/3ionc-6oyd27r.js | 49 KB | 36 KB (77%) | ✓ | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/1ibkovy6w94vf.js | 41 KB | 23 KB (57%) | ✓ | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/2n_95vkrc_bfl.js | 73 KB | 21 KB (30%) | ✓ | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/41pusvthv-4-n.js | 2 KB | — | ✓ | 1st |
| https://omnisphere.xaiproperties.com/_next/static/chunks/10xsfbkvhaxjj.js | 6 KB | — | ✓ | 1st |
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 InventoryAction102 resources · 1.7 MB · 548 KB savings availableFIX
~548.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 102 resources | 1.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.7 MB transferred, 102 requestsREVIEW
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
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
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact18% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image OptimizationNo images on this pagePASS
A+Font Loading9 fonts (309 KB)PASS
Web fonts
9
309 KB total
Render-blocking
0
of 9
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 HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
AServer Response Intelligence2 server-response signal(s) detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall102 requests over 1523msINFO
Image Optimization1 images, 1 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
1 KB