Performance
· 23 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.
838 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.95 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
211 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.659
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.31 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.
5.48 s
Page Load Progression
FPage Weight BudgetAction13.7 MB transferred, 160 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
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 ImpactAction99% third-party, 0 ms blockingFIX
DJS Execution CostAction3009ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://app-assets.project1content.com/tour/main.b00ba48d.js | 729ms | 665ms | 12ms | 3rd |
| https://app-assets.project1content.com/tour/vendors~main.76af9848.js | 666ms | 419ms | 54ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 569ms | 393ms | 124ms | 3rd |
| Unattributable | 351ms | 12ms | 0ms | 1st |
| https://bangbros.com/ | 322ms | 11ms | 53ms | 1st |
| https://onelist.project1content.com/static/js/main.485836b9.js | 193ms | 119ms | 29ms | 3rd |
| https://onenavigation.project1content.com/static/js/main.0a00a1d5.js | 179ms | 147ms | 24ms | 3rd |
FJS BundlesAction36 scripts, 1.6 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://app-assets.project1content.com/tour/vendors~main.76af9848.js | 707 KB | 394 KB (56%) | ✓ | 3rd |
| https://onelist.project1content.com/static/js/main.485836b9.js | 384 KB | 214 KB (66%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 0 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 0 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 0 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 374 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 375 KB | 186 KB (50%) | ✓ | 3rd |
| https://onenavigation.project1content.com/static/js/main.0a00a1d5.js | 195 KB | 76 KB (49%) | ✓ | 3rd |
| https://app-assets.project1content.com/tour/main.b00ba48d.js | 134 KB | 67 KB (50%) | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/PurchaseDrawerV3Block.f7936f49.js | 5 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 InventoryAction160 resources · 13.7 MB · 1.6 MB savings availableFIX
~1.6 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 160 resources | 13.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction79 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
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
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+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (63 KB)PASS
Web fonts
4
63 KB total
Render-blocking
0
of 4
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+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall160 requests over 3515msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
app-assets.project1content.com app-assets.project1content.com | Other | 729ms | 134 KB | 50% | $10/mo | Costly |
app-assets.project1content.com app-assets.project1content.com | Other | 666ms | 707 KB | 56% | $9/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 569ms | 0 KB | 50% | $8/mo | Costly |
onelist.project1content.com onelist.project1content.com | Other | 193ms | 384 KB | 66% | $3/mo | Optional |
onenavigation.project1content.com onenavigation.project1content.com | Other | 179ms | 195 KB | 49% | $2/mo | Optional |
These scripts may cost more than they're worth
- app-assets.project1content.com adds 729ms and costs ~$10/month
- app-assets.project1content.com adds 666ms and costs ~$9/month
- www.gstatic.com adds 569ms and costs ~$8/month
78% 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
app-assets.project1content.com takes 729ms 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
50% of app-assets.project1content.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
app-assets.project1content.com takes 666ms 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 app-assets.project1content.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.gstatic.com takes 569ms 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
66% of onelist.project1content.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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-14 — 2026-07-11)
LCP (p75)
3173 ms
64% good
INP (p75)
334 ms
60% good
CLS (p75)
0.980
35% good
FCP (p75)
2145 ms
TTFB (p75)
1337 ms
Image Optimization12 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
12
Total Size
0 KB
Oversized
6