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.
4.74 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.97 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.01 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.
7.12 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.
14.36 s
Page Load Progression
DThird-Party ImpactAction66% third-party, 0 ms blockingFIX
DJS Execution CostAction3500ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 551ms | 29ms | 0ms | 3rd |
| https://askubuntu.com/ | 449ms | 49ms | 13ms | 1st |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otGPP.js | 446ms | 410ms | 16ms | 3rd |
| https://dn0qt3r0xannq.cloudfront.net/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js | 351ms | 198ms | 28ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-S812YQPLT2 | 236ms | 203ms | 32ms | 3rd |
| https://askubuntu.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 211ms | 184ms | 10ms | 1st |
| https://edge.aditude.io/prebid/9.30.0.js?fork=1&v=bf6611fc0393cee6578a23c9bb56896d&modules=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%3D | 190ms | 153ms | 36ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 | 172ms | 114ms | 50ms | 3rd |
| https://raven-static.aditude.io/prod/1.19.14-y0ptsc/raven.js | 160ms | 121ms | 39ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 154ms | 68ms | 45ms | 3rd |
Showing top 10 of 17 scripts
FJS BundlesAction40 scripts, 601 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 | 187 KB | 129 KB (69%) | ✓ | 3rd |
| https://edge.aditude.io/prebid/9.30.0.js?fork=1&v=bf6611fc0393cee6578a23c9bb56896d&modules=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%3D | 131 KB | 96 KB (74%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 129 KB | 73 KB (57%) | ✓ | 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 | 64 KB (60%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-S812YQPLT2 | 155 KB | 60 KB (39%) | ✓ | 3rd |
| https://dn0qt3r0xannq.cloudfront.net/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js | 84 KB | 34 KB (40%) | ✓ | 3rd |
| https://askubuntu.com/Content/Js/webpack-chunks/svelte.en.js?v=f773033c4e0b | 32 KB | 32 KB (99%) | ✓ | 1st |
| https://askubuntu.com/Content/Js/third-party/npm/@stackoverflow/stacks/dist/js/stacks.min.js?v=c7bcc7a1b4fd | 30 KB | 21 KB (69%) | ✓ | 1st |
| https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js | 30 KB | 20 KB (68%) | ✓ | 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 InventoryAction76 resources · 1.8 MB · 601 KB savings availableFIX
~601.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 76 resources | 1.8 MiB | ||||||
CPage Weight BudgetAction1.8 MB transferred, 76 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 Optimization15 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 Waterfall76 requests over 2686msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 551ms | 0 KB | — | $7/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 446ms | 22 KB | — | $6/mo | Essential |
dn0qt3r0xannq.cloudfront.net dn0qt3r0xannq.cloudfront.net | Other | 351ms | 84 KB | 40% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 236ms | 155 KB | 39% | $3/mo | Costly |
edge.aditude.io edge.aditude.io | Other | 190ms | 131 KB | 74% | $3/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 172ms | 187 KB | 69% | $2/mo | Optional |
raven-static.aditude.io raven-static.aditude.io | Other | 160ms | 107 KB | 60% | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 154ms | 129 KB | 57% | $2/mo | Essential |
dn0qt3r0xannq.cloudfront.net dn0qt3r0xannq.cloudfront.net | Other | 108ms | 2 KB | — | $1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 85ms | 0 KB | — | $1/mo | Optional |
ajax.googleapis.com ajax.googleapis.com | Other | 61ms | 30 KB | 68% | $1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 60ms | 9 KB | — | $1/mo | Essential |
These scripts may cost more than they're worth
- Unattributable adds 551ms and costs ~$7/month
- dn0qt3r0xannq.cloudfront.net adds 351ms and costs ~$5/month
- Google Tag Manager adds 236ms and costs ~$3/month
74% 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
Unattributable takes 551ms 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 351ms 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 236ms 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
74% 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
69% 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
60% 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
57% 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
68% of ajax.googleapis.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