Performance
· 14 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.
514 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.46 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.78 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.030
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.89 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.
21.21 s
Page Load Progression
5.6 s
11.1 s
16.7 s 22.3 s 27.8 s 33.4 s 39.0 s
44.5 sFPage Weight BudgetAction24.3 MB transferred, 541 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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 ImpactAction92% third-party, 0 ms blockingFIX
FJS Execution CostAction13032ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1721ms | 281ms | 0ms | 3rd |
| https://aam.a47b.com/aam?asid=dP4XOPhO&af=728x90&ad=138462940247&adv=5328081061&ca=6333897734&io=3222035207&pl=138462940247&ra=1898970319&st=wired.com&edst=21698364852&spl=/3379/conde.wired/mid-content/homepage/bundle/1 | 1281ms | 550ms | 2ms | 3rd |
| https://ads-static.conde.digital/production/cns/builds/wired/v6.js?v=12511 | 1079ms | 453ms | 4ms | 3rd |
| https://www.redditstatic.com/ads/pixel.js?pixel_id=t2_bn0mvswd | 986ms | 907ms | 3ms | 3rd |
| https://www.wired.com/verso/static/1322.b85b1e0d77029b5e1dcb.js | 869ms | 674ms | 37ms | 1st |
| https://bd1cec50-00d1-4ce9-9572-785857419a1e.edge.permutive.app/1dfc40bb-d155-4f15-970e-99450dbfa0e2-web.js | 806ms | 584ms | 102ms | 3rd |
| https://www.wired.com/ | 674ms | 51ms | 79ms | 1st |
| https://www.wired.com/verso/static/presenter-bundles.6c04290c88398ec2d6c7.js | 544ms | 532ms | 4ms | 1st |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202603310101/pubads_impl.js | 535ms | 449ms | 24ms | 3rd |
| https://jsconfig.adsafeprotected.com/jsconfig/jload/931565?cbName=__IntegralAS__1831&anId=931565&campId=728x90&pubId=5328081061&chanId=21698364852&placementId=6333897734&pubCreative=138462940247&pubOrder=3222035207&cb+=1898970319&adsafe_par=&impId=9ae91ca4-303e-11f1-8baf-3eb015c9560d | 471ms | 446ms | 0ms | 3rd |
Showing top 10 of 44 scripts
FJS BundlesAction157 scripts, 2.2 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.wired.com/verso/static/8197.ee4ad2ce0f172ed9fb47.js | 479 KB | 239 KB (50%) | ✓ | 1st |
| https://www.wired.com/verso/static/2519.d8395091bf07dbb36b08.js | 303 KB | 146 KB (48%) | ✓ | 1st |
| https://www.wired.com/verso/static/1322.b85b1e0d77029b5e1dcb.js | 292 KB | 141 KB (48%) | ✓ | 1st |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604020101/show_ads_impl_fy2021.js?bust=31097614 | 178 KB | 133 KB (75%) | ✓ | 3rd |
| https://www.wired.com/verso/static/6674.f48892d10419c7222632.js | 150 KB | 109 KB (73%) | ✓ | 1st |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202603310101/pubads_impl.js | 182 KB | 83 KB (45%) | ✓ | 3rd |
| https://martech.condenastdigital.com/lib/martech.js | 118 KB | 76 KB (65%) | ✗ | 3rd |
| https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_ca9cac840170c7a80240bb233fb08e5f.br.js | 120 KB | 72 KB (61%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-R5ETWVDD06&cx=c>m=4e6411 | 142 KB | 69 KB (49%) | ✓ | 3rd |
| https://asset.fwpub1.com/js/fwn.js | 118 KB | 67 KB (57%) | ✓ | 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
CImage OptimizationAction132 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.
Performance issues directly impact user engagement and conversion rates.
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
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
BHTTP Cachingstale-while-revalidate=60, stale-if-error=86400, s-maxage=900REVIEW
stale-while-revalidate=60, stale-if-error=86400, s-maxage=900
| Directive | Value | Meaning |
|---|---|---|
| stale-while-revalidate | 60 | Serve stale for 1 minute while fetching fresh |
| stale-if-error | 86400 | |
| s-maxage | 900 | CDN caches for 15 minutes |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading17 fonts (367 KB)PASS
Web fonts
17
367 KB total
Render-blocking
0
of 17
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+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall541 requests over 0msINFO
Performance analysis not available for this result.
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1721ms | 0 KB | — | $30/mo | Costly |
aam.a47b.com aam.a47b.com | Other | 1281ms | 24 KB | — | $22/mo | Costly |
ads-static.conde.digital ads-static.conde.digital | Other | 1079ms | 41 KB | — | $19/mo | Costly |
www.redditstatic.com www.redditstatic.com | Other | 986ms | 19 KB | — | $17/mo | Costly |
bd1cec50-00d1-4ce9-9572-785857419a1e.edge.permutive.app bd1cec50-00d1-4ce9-9572-785857419a1e.edge.permutive.app | Other | 806ms | 381 KB | — | $14/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 535ms | 182 KB | 45% | $9/mo | Costly |
jsconfig.adsafeprotected.com jsconfig.adsafeprotected.com | Other | 471ms | 4 KB | — | $8/mo | Costly |
static.adsafeprotected.com static.adsafeprotected.com | Other | 377ms | 23 KB | — | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 346ms | 202 KB | 26% | $6/mo | Costly |
assets.bounceexchange.com assets.bounceexchange.com | Other | 226ms | 120 KB | 61% | $4/mo | Costly |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 146ms | 178 KB | 75% | $3/mo | Optional |
asset.fwpub1.com asset.fwpub1.com | Other | 142ms | 118 KB | 57% | $2/mo | Optional |
cdn-magiclinks.trackonomics.net cdn-magiclinks.trackonomics.net | Other | 132ms | 38 KB | — | $2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 127ms | 0 KB | 42% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 113ms | 161 KB | 40% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 105ms | 143 KB | 38% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 105ms | 118 KB | 49% | $2/mo | Optional |
privacy.condenastdigital.com privacy.condenastdigital.com | Other | 102ms | 135 KB | — | $2/mo | Optional |
cdn.doubleverify.com cdn.doubleverify.com | Other | 102ms | 95 KB | 37% | $2/mo | Optional |
analytics.tiktok.com analytics.tiktok.com | Other | 98ms | 110 KB | 51% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 98ms | 155 KB | 26% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 96ms | 142 KB | 43% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 93ms | 142 KB | 39% | $2/mo | Optional |
client.aps.amazon-adsystem.com client.aps.amazon-adsystem.com | Other | 89ms | 81 KB | 40% | $2/mo | Optional |
cdn.gladly.com cdn.gladly.com | Other | 88ms | 44 KB | 55% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 87ms | 145 KB | 42% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 87ms | 143 KB | 42% | $2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 83ms | 54 KB | 51% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 80ms | 129 KB | 46% | $1/mo | Optional |
sc-static.net sc-static.net | Other | 78ms | 25 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 67ms | 129 KB | 46% | $1/mo | Optional |
cdn.parsely.com cdn.parsely.com | Other | 66ms | 25 KB | — | $1/mo | Optional |
pixel.adsafeprotected.com pixel.adsafeprotected.com | Other | 64ms | 92 KB | 40% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 63ms | 142 KB | 49% | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 60ms | 95 KB | 36% | $1/mo | Optional |
ads-static.conde.digital ads-static.conde.digital | Other | 54ms | 104 KB | 36% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1721ms and costs ~$30/month
- aam.a47b.com adds 1281ms and costs ~$22/month
- ads-static.conde.digital adds 1079ms and costs ~$19/month
- www.redditstatic.com adds 986ms and costs ~$17/month
- bd1cec50-00d1-4ce9-9572-785857419a1e.edge.permutive.app adds 806ms and costs ~$14/month
- securepubads.g.doubleclick.net adds 535ms and costs ~$9/month
- jsconfig.adsafeprotected.com adds 471ms and costs ~$8/month
- static.adsafeprotected.com adds 377ms and costs ~$6/month
- Google Tag Manager adds 346ms and costs ~$6/month
- assets.bounceexchange.com adds 226ms and costs ~$4/month
79% 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 1721ms 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
aam.a47b.com takes 1281ms 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
ads-static.conde.digital takes 1079ms 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
www.redditstatic.com takes 986ms 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
bd1cec50-00d1-4ce9-9572-785857419a1e.edge.permutive.app 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
securepubads.g.doubleclick.net takes 535ms 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
jsconfig.adsafeprotected.com takes 471ms 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
static.adsafeprotected.com takes 377ms 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 346ms 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
assets.bounceexchange.com takes 226ms 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
61% of assets.bounceexchange.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
75% of pagead2.googlesyndication.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
57% of asset.fwpub1.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
51% of analytics.tiktok.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
55% of cdn.gladly.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
51% of pagead2.googlesyndication.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