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.
572 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
833 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
112 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.
928 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
5.06 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 129 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
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 CostAction2344ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.businessinsider.com/ | 919ms | 22ms | 7ms | 3rd |
| Unattributable | 227ms | 24ms | 0ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 211ms | 194ms | 12ms | 3rd |
| https://www.businessinsider.com/scripts/main.8c8b98ae40820e3e27f0.js | 144ms | 80ms | 8ms | 3rd |
| https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js | 106ms | 82ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MP6F46L | 101ms | 78ms | 12ms | 3rd |
| https://cdn.confiant-integrations.net/video/202603241056/wrap.js | 96ms | 83ms | 9ms | 3rd |
| https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js | 89ms | 80ms | 8ms | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/10306.js | 69ms | 58ms | 11ms | 3rd |
| https://connect.facebook.net/signals/config/1988166924554892?v=2.9.303&r=stable&domain=www.businessinsider.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 | 69ms | 57ms | 5ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction55 scripts, 798 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 126 KB (67%) | ✓ | 3rd |
| https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js | 142 KB | 85 KB (60%) | ✓ | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/10306.js | 180 KB | 74 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MP6F46L | 163 KB | 71 KB (44%) | ✓ | 3rd |
| https://cdn.confiant-integrations.net/video/202603241056/wrap.js | 125 KB | 70 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-E21CV80ZCZ&cx=c>m=4e64h1 | 148 KB | 62 KB (42%) | ✓ | 3rd |
| https://businessinsider.edge.permutive.app/3aba5292-ba75-422b-8715-bd21146f7836-web.js | 192 KB | 43 KB (22%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 38 KB (42%) | ✓ | 3rd |
| https://verticalvideo.businessinsider.com/vs.js?cid=8CU2241SO | 47 KB | 37 KB (80%) | ✓ | 3rd |
| https://www.businessinsider.com/scripts/main.8c8b98ae40820e3e27f0.js | 80 KB | 37 KB (47%) | ✓ | 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 InventoryAction129 resources · 2.5 MB · 798 KB savings availableFIX
~798.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 129 resources | 2.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization14 images, 0 KB saveableREVIEW
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 Loading3 fonts (28 KB)PASS
Web fonts
3
28 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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
Network Waterfall129 requests over 5756msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.businessinsider.com www.businessinsider.com | Other | 919ms | 70 KB | — | $5/mo | Costly |
Unattributable Unattributable | Other | 227ms | 0 KB | — | $1/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 211ms | 188 KB | 67% | $1/mo | Costly |
www.businessinsider.com www.businessinsider.com | Other | 144ms | 80 KB | 47% | $1/mo | Optional |
cdn.privacy-mgmt.com cdn.privacy-mgmt.com | Other | 106ms | 42 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 101ms | 163 KB | 44% | $1/mo | Optional |
cdn.confiant-integrations.net cdn.confiant-integrations.net | Other | 96ms | 125 KB | 56% | $1/mo | Optional |
cdn.confiant-integrations.net cdn.confiant-integrations.net | Other | 89ms | 142 KB | 60% | $1/mo | Optional |
micro.rubiconproject.com micro.rubiconproject.com | Other | 69ms | 180 KB | 41% | $0/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 69ms | 45 KB | — | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 68ms | 148 KB | 42% | $0/mo | Optional |
sdk.mrf.io sdk.mrf.io | Other | 68ms | 59 KB | 43% | $0/mo | Optional |
businessinsider.edge.permutive.app businessinsider.edge.permutive.app | Other | 63ms | 192 KB | 22% | $0/mo | Optional |
my.businessinsider.com my.businessinsider.com | Other | 62ms | 0 KB | — | $0/mo | Optional |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 52ms | 91 KB | 42% | $0/mo | Optional |
These scripts may cost more than they're worth
- www.businessinsider.com adds 919ms and costs ~$5/month
- Unattributable adds 227ms and costs ~$1/month
- securepubads.g.doubleclick.net adds 211ms and costs ~$1/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.businessinsider.com takes 919ms 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 227ms 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
securepubads.g.doubleclick.net takes 211ms 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
67% of securepubads.g.doubleclick.net'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
56% of cdn.confiant-integrations.net'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
60% of cdn.confiant-integrations.net'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