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.
2.44 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.27 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.82 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.68 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.
21.94 s
Page Load Progression
FPage Weight BudgetAction2.9 MB transferred, 64 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction7910ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.teenvogue.com/verso/static/2880.865952f35702ddfb7152.js | 1795ms | 1360ms | 122ms | 3rd |
| https://www.teenvogue.com/verso/static/presenter-bundles.d7384530fdc10d8b1f48.js | 1488ms | 1437ms | 14ms | 3rd |
| https://www.teenvogue.com/ | 958ms | 33ms | 130ms | 3rd |
| Unattributable | 746ms | 19ms | 0ms | 3rd |
| https://privacy.condenastdigital.com/fides.js?property_id=FDS-RFNI53 | 603ms | 365ms | 194ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5WV8CLP&l=dataLayer | 417ms | 361ms | 50ms | 3rd |
| https://www.teenvogue.com/verso/static/1113.e5d6201548a2ec9583d0.js | 417ms | 174ms | 218ms | 3rd |
| https://www.teenvogue.com/XUlLQPMkETCMNiYlSvYBbADIGj8nq6B3kMXwifPEeXfj97Y-v03qdq0ZmYkAHr_rmMparRmYSXU1DmceIEHU54CA3DRKE9N3jsFJESTyCp6lt8dUa544X9f8a7Li4dcsEsqxRT | 274ms | 221ms | 15ms | 3rd |
| https://www.teenvogue.com/0tK0GCxfkE6jhuTifuQH9gRyoBqlo5yvSBbVq9y7U21HpUgkoV8NehJmnLjHKTRXSmvvkuLJZoAetmV-EGAzEQTKBnLdSlJxvsrp6SvsQ2I4Mez6xvpSbhPnivJS1x0DXkw8KF1tE960-FkDW6 | 246ms | 167ms | 3ms | 3rd |
| https://www.teenvogue.com/verso/static/2519.8a55e989ba5af70e92d1.js | 231ms | 59ms | 169ms | 3rd |
Showing top 10 of 16 scripts
FJS BundlesAction35 scripts, 969 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.teenvogue.com/verso/static/1113.e5d6201548a2ec9583d0.js | 481 KB | 238 KB (50%) | ✓ | 3rd |
| https://www.teenvogue.com/verso/static/2880.865952f35702ddfb7152.js | 297 KB | 146 KB (49%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 145 KB (77%) | ✓ | 3rd |
| https://www.teenvogue.com/verso/static/2519.8a55e989ba5af70e92d1.js | 305 KB | 141 KB (46%) | ✓ | 3rd |
| https://www.teenvogue.com/verso/static/1292.40f59c87ae47d8b12033.js | 145 KB | 108 KB (75%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5WV8CLP&l=dataLayer | 187 KB | 75 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PVBXQMCR>m=4e64h1 | 120 KB | 61 KB (51%) | ✓ | 3rd |
| https://ads-static.conde.digital/production/cns/builds/teen-vogue/v6.js?v=12572 | 41 KB | 32 KB (78%) | ✓ | 3rd |
| https://www.teenvogue.com/XUlLQPMkETCMNiYlSvYBbADIGj8nq6B3kMXwifPEeXfj97Y-v03qdq0ZmYkAHr_rmMparRmYSXU1DmceIEHU54CA3DRKE9N3jsFJESTyCp6lt8dUa544X9f8a7Li4dcsEsqxRT | 45 KB | 24 KB (54%) | ✓ | 3rd |
| https://www.teenvogue.com/verso/static/9919.fa31716fd49682d94777.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
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 InventoryAction64 resources · 2.9 MB · 969 KB savings availableFIX
~969.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 64 resources | 2.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization10 images, 0 KB saveableREVIEW
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
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 Loading7 fonts (347 KB)PASS
Web fonts
7
347 KB total
Render-blocking
0
of 7
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 Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall64 requests over 2922msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.teenvogue.com www.teenvogue.com | Other | 1795ms | 297 KB | 49% | $31/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 1488ms | 32 KB | — | $26/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 958ms | 118 KB | — | $17/mo | Costly |
Unattributable Unattributable | Other | 746ms | 0 KB | — | $13/mo | Costly |
privacy.condenastdigital.com privacy.condenastdigital.com | Other | 603ms | 199 KB | — | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 417ms | 187 KB | 40% | $7/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 417ms | 481 KB | 50% | $7/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 274ms | 45 KB | 54% | $5/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 246ms | 8 KB | — | $4/mo | Costly |
www.teenvogue.com www.teenvogue.com | Other | 231ms | 305 KB | 46% | $4/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 154ms | 188 KB | 77% | $3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 142ms | 120 KB | 51% | $2/mo | Optional |
www.teenvogue.com www.teenvogue.com | Other | 137ms | 15 KB | — | $2/mo | Optional |
globalservices.conde.digital globalservices.conde.digital | Other | 128ms | 26 KB | — | $2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 92ms | 34 KB | — | $2/mo | Optional |
www.teenvogue.com www.teenvogue.com | Other | 82ms | 145 KB | 75% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.teenvogue.com adds 1795ms and costs ~$31/month
- www.teenvogue.com adds 1488ms and costs ~$26/month
- www.teenvogue.com adds 958ms and costs ~$17/month
- Unattributable adds 746ms and costs ~$13/month
- privacy.condenastdigital.com adds 603ms and costs ~$10/month
- Google Tag Manager adds 417ms and costs ~$7/month
- www.teenvogue.com adds 417ms and costs ~$7/month
- www.teenvogue.com adds 274ms and costs ~$5/month
- www.teenvogue.com adds 246ms and costs ~$4/month
- www.teenvogue.com adds 231ms and costs ~$4/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.teenvogue.com takes 1795ms 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.teenvogue.com takes 1488ms 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.teenvogue.com takes 958ms 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 746ms 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
privacy.condenastdigital.com takes 603ms 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 417ms 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.teenvogue.com takes 417ms 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.teenvogue.com takes 274ms 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
54% of www.teenvogue.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
www.teenvogue.com takes 246ms 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.teenvogue.com takes 231ms 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
77% 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
51% of Google Tag Manager'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 www.teenvogue.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