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.
4.02 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.99 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.31 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.026
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.02 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.
14.16 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5367ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.byrdie.com/ | 965ms | 113ms | 31ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otGPP.js | 757ms | 643ms | 22ms | 3rd |
| Unattributable | 588ms | 18ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P3SZGS | 464ms | 347ms | 75ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DK3GDWHWJH&cx=c>m=4e64k1 | 453ms | 366ms | 83ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YNNTJ4JETN&cx=c>m=4e64k1 | 450ms | 368ms | 79ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 412ms | 293ms | 115ms | 3rd |
| https://www.byrdie.com/static/4.210.0/cache/eNp9lFFugzAMhi80xhm6adpTpWrjAiYx4BJiFDtU7ekXqq0tXeAhKPH3x0l-W5SioGTKAbw6LI9SagCDL-UybngY2aNXKR2cOeqsPEphOjT9szghx2DRZoBh7gklQ6KSI82zxhdb2PKwyecn9eTbTdGE3nIotQusKbSSBguwssrMacqwIU2KOiD0I1Oy8CZJrEaIet68mIPLWeiCyW32DbXPEke1LHXpEAyCRon9RiWNhOb6yd0ZznXOgxFaLCbC00beVodrqR2ZvvjzPpcr1hLrDHjfH-5RttGhrHTIHYLdowYyUs0HYshq4tWSonHM4XmZ2_DtWLPg81DNI4cUQos6d5tAg45Ecyoxy0a6k4CpEyNW_3x7fOtvKxQw0nJ1kz_UIx0072rH7E2-qrd5rKFr_dLkY0Kf92I3wIV9eYh1emyHYRctoTcJ_g-t9q68Rj8huS79H1ZsaQJKB7XDnZUfrsfFmQ.min.js | 342ms | 271ms | 23ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WT6XGWDH>m=4e64k1 | 302ms | 240ms | 54ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 265ms | 126ms | 106ms | 3rd |
Showing top 10 of 14 scripts
DJS BundlesAction15 scripts, 477 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?cb=31097945 | 188 KB | 129 KB (69%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 124 KB | 74 KB (60%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YNNTJ4JETN&cx=c>m=4e64k1 | 166 KB | 65 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WT6XGWDH>m=4e64k1 | 123 KB | 61 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DK3GDWHWJH&cx=c>m=4e64k1 | 151 KB | 60 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P3SZGS | 139 KB | 57 KB (41%) | ✓ | 3rd |
| https://www.byrdie.com/static/4.210.0/cache/eNp9lFFugzAMhi80xhm6adpTpWrjAiYx4BJiFDtU7ekXqq0tXeAhKPH3x0l-W5SioGTKAbw6LI9SagCDL-UybngY2aNXKR2cOeqsPEphOjT9szghx2DRZoBh7gklQ6KSI82zxhdb2PKwyecn9eTbTdGE3nIotQusKbSSBguwssrMacqwIU2KOiD0I1Oy8CZJrEaIet68mIPLWeiCyW32DbXPEke1LHXpEAyCRon9RiWNhOb6yd0ZznXOgxFaLCbC00beVodrqR2ZvvjzPpcr1hLrDHjfH-5RttGhrHTIHYLdowYyUs0HYshq4tWSonHM4XmZ2_DtWLPg81DNI4cUQos6d5tAg45Ecyoxy0a6k4CpEyNW_3x7fOtvKxQw0nJ1kz_UIx0072rH7E2-qrd5rKFr_dLkY0Kf92I3wIV9eYh1emyHYRctoTcJ_g-t9q68Rj8huS79H1ZsaQJKB7XDnZUfrsfFmQ.min.js | 47 KB | 30 KB (65%) | ✓ | 3rd |
| https://d30qdagvt44524.cloudfront.net/production/segments?muid=9d4b13c2-769e-4b3a-9eca-f2dde5359492 | 0 KB | — | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015 | 7 KB | — | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 9 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 InventoryAction36 resources · 1.7 MB · 477 KB savings availableFIX
~477.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 36 resources | 1.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.7 MB transferred, 36 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
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization4 images, 0 KB saveablePASS
A+Font Loading3 fonts (42 KB)PASS
Web fonts
3
42 KB total
Render-blocking
0
of 3
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+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 Waterfall36 requests over 2050msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.byrdie.com www.byrdie.com | Other | 965ms | 92 KB | — | $13/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 757ms | 22 KB | — | $10/mo | Essential |
Unattributable Unattributable | Other | 588ms | 0 KB | — | $8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 464ms | 139 KB | 41% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 453ms | 151 KB | 40% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 450ms | 166 KB | 39% | $6/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 412ms | 188 KB | 69% | $5/mo | Costly |
www.byrdie.com www.byrdie.com | Other | 342ms | 47 KB | 65% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 302ms | 123 KB | 50% | $4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 265ms | 124 KB | 60% | $4/mo | Essential |
OneTrust cdn.cookielaw.org | Consent | 112ms | 9 KB | — | $1/mo | Essential |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 112ms | 34 KB | — | $1/mo | Optional |
www.byrdie.com www.byrdie.com | Other | 93ms | 18 KB | — | $1/mo | Optional |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 52ms | 7 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.byrdie.com adds 965ms and costs ~$13/month
- Unattributable adds 588ms and costs ~$8/month
- Google Tag Manager adds 464ms and costs ~$6/month
- Google Tag Manager adds 453ms and costs ~$6/month
- Google Tag Manager adds 450ms and costs ~$6/month
- securepubads.g.doubleclick.net adds 412ms and costs ~$5/month
- www.byrdie.com adds 342ms and costs ~$5/month
- Google Tag Manager adds 302ms 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.byrdie.com takes 965ms 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 588ms 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 464ms 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 453ms 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 450ms 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 412ms 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
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
www.byrdie.com takes 342ms 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
65% of www.byrdie.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
Google Tag Manager takes 302ms 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
60% 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