Performance
· 26 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.
3.00 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.34 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.04 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
1.242
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.32 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.
15.66 s
Page Load Progression
FPage Weight BudgetAction2.6 MB transferred, 86 requestsFIX
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4191ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://app-assets.project1content.com/tour/main.89240229.js | 1301ms | 1224ms | 26ms | 3rd |
| https://app-assets.project1content.com/tour/vendors~main.fec81aa5.js | 743ms | 500ms | 141ms | 3rd |
| https://bangbros.com/websites/PublicBang | 669ms | 16ms | 93ms | 3rd |
| Unattributable | 487ms | 23ms | 0ms | 1st |
| https://onelist.project1content.com/static/js/main.cde437d5.js | 470ms | 324ms | 83ms | 3rd |
| https://onenavigation.project1content.com/static/js/main.2d855f99.js | 362ms | 300ms | 40ms | 3rd |
| https://bangbros.com/_p1cdn/tour/atlaslib-js.ef4819d8.js | 159ms | 147ms | 3ms | 3rd |
FJS BundlesAction24 scripts, 826 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://app-assets.project1content.com/tour/vendors~main.fec81aa5.js | 709 KB | 399 KB (57%) | ✓ | 3rd |
| https://onelist.project1content.com/static/js/main.cde437d5.js | 384 KB | 263 KB (68%) | ✓ | 3rd |
| https://onenavigation.project1content.com/static/js/main.2d855f99.js | 195 KB | 94 KB (49%) | ✓ | 3rd |
| https://app-assets.project1content.com/tour/main.89240229.js | 133 KB | 69 KB (52%) | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/FeaturedSceneListBlock.5483bae5.js | 9 KB | — | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/DisclaimerBlock.9c498afc.js | 2 KB | — | ✓ | 3rd |
| https://bangbros.com/_p1cdn/tour/EventBus.js | 2 KB | — | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/AssetManagerMediaBlock.f0b8ebc2.js | 1 KB | — | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/ButtonBlock.5275f8b6.js | 3 KB | — | ✓ | 3rd |
| https://app-assets.project1content.com/tour/@one/blocks/async/BackgroundWrapperBlock.619c3f53.js | 4 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
FPage Weight InventoryAction86 resources · 2.6 MB · 826 KB savings availableFIX
~825.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 86 resources | 2.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction36 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (29 KB)PASS
Web fonts
2
29 KB total
Render-blocking
0
of 2
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+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues 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 Waterfall86 requests over 2640msINFO
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 | 1301ms | 133 KB | 52% | €14/mo | Costly |
app-assets.project1content.com app-assets.project1content.com | Other | 743ms | 709 KB | 57% | €8/mo | Costly |
bangbros.com bangbros.com | Other | 669ms | 88 KB | — | €7/mo | Costly |
onelist.project1content.com onelist.project1content.com | Other | 470ms | 384 KB | 68% | €5/mo | Costly |
onenavigation.project1content.com onenavigation.project1content.com | Other | 362ms | 195 KB | 49% | €4/mo | Costly |
bangbros.com bangbros.com | Other | 159ms | 15 KB | — | €2/mo | Optional |
These scripts may cost more than they're worth
- app-assets.project1content.com adds 1301ms and costs ~€14/month
- app-assets.project1content.com adds 743ms and costs ~€8/month
- bangbros.com adds 669ms and costs ~€7/month
- onelist.project1content.com adds 470ms and costs ~€5/month
- onenavigation.project1content.com adds 362ms and costs ~€4/month
88% 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 1301ms 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
52% 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 743ms 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
57% 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
bangbros.com takes 669ms 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
onelist.project1content.com takes 470ms 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
68% 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
onenavigation.project1content.com takes 362ms 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
Image Optimization11 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
11
Total Size
0 KB
Oversized
5