Performance
· 17 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.
4.66 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
14.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.32 s
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.
7.17 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.
14.97 s
Page Load Progression
DThird-Party ImpactAction62% third-party, 0 ms blockingFIX
FJS Execution CostAction7636ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otGPP.js | 1014ms | 897ms | 24ms | 3rd |
| https://superuser.com/ | 922ms | 100ms | 26ms | 1st |
| Unattributable | 806ms | 25ms | 0ms | 3rd |
| https://dn0qt3r0xannq.cloudfront.net/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js | 680ms | 385ms | 48ms | 3rd |
| https://superuser.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 472ms | 452ms | 7ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-S812YQPLT2 | 444ms | 363ms | 76ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31097964 | 376ms | 268ms | 103ms | 3rd |
| https://edge.aditude.io/prebid/9.30.0.js?fork=1&v=bf6611fc0393cee6578a23c9bb56896d&modules=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%3D | 337ms | 272ms | 62ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 326ms | 168ms | 85ms | 3rd |
| https://raven-static.aditude.io/prod/1.19.14-y0ptsc/raven.js | 315ms | 235ms | 79ms | 3rd |
Showing top 10 of 23 scripts
FJS BundlesAction40 scripts, 692 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31097964 | 188 KB | 126 KB (67%) | ✓ | 3rd |
| https://superuser.com/Content/Js/full-anon.en.js?v=037e97b07fca | 129 KB | 94 KB (73%) | ✓ | 1st |
| https://edge.aditude.io/prebid/9.30.0.js?fork=1&v=bf6611fc0393cee6578a23c9bb56896d&modules=WyIzM2Fjcm9zc0lkU3lzdGVtIiwiYWRpdHVkZSIsImFsbG93QWN0aXZpdGllcyIsImFwcG5leHVzQmlkQWRhcHRlciIsImNvbnNlbnRNYW5hZ2VtZW50IiwiY29uc2VudE1hbmFnZW1lbnRHcHAiLCJjb25zZW50TWFuYWdlbWVudFVzcCIsImNvbnZlcnNhbnRCaWRBZGFwdGVyIiwiY3JpdGVvSWRTeXN0ZW0iLCJlcXVhdGl2QmlkQWRhcHRlciIsImZhYnJpY2tJZFN5c3RlbSIsImdkcHJFbmZvcmNlbWVudCIsImdwdFByZUF1Y3Rpb24iLCJpZDVJZFN5c3RlbSIsIml4QmlkQWRhcHRlciIsImthcmdvQmlkQWRhcHRlciIsIm1lZGlhbmV0QmlkQWRhcHRlciIsIm9wZW54QmlkQWRhcHRlciIsInByaWNlRmxvb3JzIiwicHViUHJvdmlkZWRJZFN5c3RlbSIsInB1Ym1hdGljQmlkQWRhcHRlciIsInJ1Ymljb25CaWRBZGFwdGVyIiwic2hhcmVkSWRTeXN0ZW0iLCJzaGFyZXRocm91Z2hCaWRBZGFwdGVyIiwidHJpcGxlbGlmdEJpZEFkYXB0ZXIiLCJ0dGRCaWRBZGFwdGVyIiwidW5pZmllZElkU3lzdGVtIl0%3D | 131 KB | 94 KB (72%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 96 KB | 72 KB (75%) | ✓ | 3rd |
| https://raven-static.aditude.io/prod/1.19.14-y0ptsc/raven.js | 107 KB | 63 KB (59%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-S812YQPLT2 | 155 KB | 60 KB (39%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 129 KB | 50 KB (56%) | ✓ | 3rd |
| https://dn0qt3r0xannq.cloudfront.net/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js | 84 KB | 33 KB (39%) | ✓ | 3rd |
| https://superuser.com/Content/Js/webpack-chunks/svelte.en.js?v=f773033c4e0b | 32 KB | 32 KB (99%) | ✓ | 1st |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 0 KB | 24 KB (71%) | ✓ | 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 InventoryAction74 resources · 2.0 MB · 692 KB savings availableFIX
~692.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 74 resources | 2.0 MiB | ||||||
CPage Weight BudgetAction2.0 MB transferred, 74 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
BImage Optimization13 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
BHTTP CachingprivateREVIEW
private
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources 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 Waterfall74 requests over 3264msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
OneTrust cdn.cookielaw.org | Consent | 1014ms | 22 KB | — | $13/mo | Essential |
Unattributable Unattributable | Other | 806ms | 0 KB | — | $11/mo | Costly |
dn0qt3r0xannq.cloudfront.net dn0qt3r0xannq.cloudfront.net | Other | 680ms | 84 KB | 39% | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 444ms | 155 KB | 39% | $6/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 376ms | 188 KB | 67% | $5/mo | Costly |
edge.aditude.io edge.aditude.io | Other | 337ms | 131 KB | 72% | $4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 326ms | 129 KB | 56% | $4/mo | Essential |
raven-static.aditude.io raven-static.aditude.io | Other | 315ms | 107 KB | 59% | $4/mo | Costly |
dn0qt3r0xannq.cloudfront.net dn0qt3r0xannq.cloudfront.net | Other | 208ms | 4 KB | — | $3/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 159ms | 0 KB | 71% | $2/mo | Optional |
accounts.google.com accounts.google.com | Other | 139ms | 96 KB | 75% | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 108ms | 9 KB | — | $1/mo | Essential |
ajax.googleapis.com ajax.googleapis.com | Other | 102ms | 30 KB | — | $1/mo | Optional |
raven-static.aditude.io raven-static.aditude.io | Other | 97ms | 6 KB | — | $1/mo | Optional |
dn0qt3r0xannq.cloudfront.net dn0qt3r0xannq.cloudfront.net | Other | 96ms | 17 KB | — | $1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 91ms | 2 KB | — | $1/mo | Essential |
These scripts may cost more than they're worth
- Unattributable adds 806ms and costs ~$11/month
- dn0qt3r0xannq.cloudfront.net adds 680ms and costs ~$9/month
- Google Tag Manager adds 444ms and costs ~$6/month
- securepubads.g.doubleclick.net adds 376ms and costs ~$5/month
- edge.aditude.io adds 337ms and costs ~$4/month
- raven-static.aditude.io adds 315ms and costs ~$4/month
- dn0qt3r0xannq.cloudfront.net adds 208ms and costs ~$3/month
69% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable takes 806ms 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
dn0qt3r0xannq.cloudfront.net takes 680ms 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
Google Tag Manager takes 444ms 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 376ms 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
edge.aditude.io takes 337ms 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
72% of edge.aditude.io'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 OneTrust'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
raven-static.aditude.io takes 315ms 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
59% of raven-static.aditude.io'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
dn0qt3r0xannq.cloudfront.net takes 208ms 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
71% 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
75% of accounts.google.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