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.
4.05 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.15 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.28 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.
4.05 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.
13.13 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5138ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.brides.com/ | 838ms | 107ms | 18ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otGPP.js | 712ms | 629ms | 23ms | 3rd |
| Unattributable | 667ms | 25ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P3SZGS | 550ms | 460ms | 74ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8KB21M3LHB&cx=c>m=4e64k0 | 486ms | 399ms | 82ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DK3GDWHWJH&cx=c>m=4e64k0 | 469ms | 353ms | 70ms | 3rd |
| https://www.brides.com/static/4.210.0/cache/eNp9k1FugzAMhi-0LIfYw54mVVovYBJDXUKMYoeKnn6h2trSBR5AxN8fO7F_rCgoOTtA1ID2LFYTOHyz67jjYeSIUcUGmDnrojyLcSd0_au4oMDg0VeAY-4JpUKyUiCtszaaPex52OXLlXqK3a5owug5WT0l1hLaSIMGvGwyd5kqbCgfpkkI_chUWniXFNYgZJ13DxbgOgtdsXSbY0vdqyRQI2tdKYJJ0Clx3Jmkk9TeXrUzw9zUejBCh2YivOzk7XS4jTqQ681f72u5ciO5qYCPr8Mjyj4HlA2HPCD4L9RETo5LQUxVTb61xLSBOb0uaxu-A2sVfB6Oy1NDCqlDXdwm0GIg0ZpK3NpID5KwODHj8V_fnu_6awUDI61Xd_nTPEqhZVc36qZ15D3HCSmcyu8pP5_BiRw.min.js | 332ms | 241ms | 14ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 315ms | 219ms | 93ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WT6XGWDH>m=4e64k0 | 285ms | 221ms | 57ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 193ms | 91ms | 76ms | 3rd |
Showing top 10 of 13 scripts
DJS BundlesAction14 scripts, 458 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 142 KB (76%) | ✓ | 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-8KB21M3LHB&cx=c>m=4e64k0 | 166 KB | 64 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WT6XGWDH>m=4e64k0 | 123 KB | 61 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DK3GDWHWJH&cx=c>m=4e64k0 | 151 KB | 60 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P3SZGS | 139 KB | 57 KB (41%) | ✓ | 3rd |
| https://www.brides.com/static/4.210.0/cache/eNp9k1FugzAMhi-0LIfYw54mVVovYBJDXUKMYoeKnn6h2trSBR5AxN8fO7F_rCgoOTtA1ID2LFYTOHyz67jjYeSIUcUGmDnrojyLcSd0_au4oMDg0VeAY-4JpUKyUiCtszaaPex52OXLlXqK3a5owug5WT0l1hLaSIMGvGwyd5kqbCgfpkkI_chUWniXFNYgZJ13DxbgOgtdsXSbY0vdqyRQI2tdKYJJ0Clx3Jmkk9TeXrUzw9zUejBCh2YivOzk7XS4jTqQ681f72u5ciO5qYCPr8Mjyj4HlA2HPCD4L9RETo5LQUxVTb61xLSBOb0uaxu-A2sVfB6Oy1NDCqlDXdwm0GIg0ZpK3NpID5KwODHj8V_fnu_6awUDI61Xd_nTPEqhZVc36qZ15D3HCSmcyu8pP5_BiRw.min.js | 30 KB | — | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015 | 7 KB | — | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 9 KB | — | ✓ | 3rd |
| https://www.brides.com/static/4.210.0/cache/eNqlUtGSgyAM_KHL8U1RIk0vBCegtv36w9KZetbx5V502cmGzRKXCxbuXUQtQu6aXawAZlQWQci9JZEv97eqT3FMSlqyYy1kiuI8DWSr_gmM_FuU_CSUt6piN8BhYGEsBAVDINuzwvoDRotxaY2rPpL1dFZ34pRuzSk_miavPT_IfzeAOj9OUmCUKbB-pFA1go874DugzR1BUlfDvBD6OnT7HdUpzhwqmfRVBJXZwJMxlJYsVKptyBx0GrdMranPMR5dOSSL1SApGQpkQusvu-PZnkQMz_UKPJxtxsyeElyXUfC-PvsL7DsLdy3K_N2FTOXIcI_m2xey8JrnBv8Cp0Uj4g.min.js | 16 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 InventoryAction35 resources · 1.6 MB · 458 KB savings availableFIX
~458.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 35 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 35 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
AImage Optimization4 images, 0 KB saveablePASS
A+Font Loading4 fonts (80 KB)PASS
Web fonts
4
80 KB total
Render-blocking
0
of 4
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 Waterfall35 requests over 1660msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.brides.com www.brides.com | Other | 838ms | 132 KB | — | $11/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 712ms | 22 KB | — | $9/mo | Essential |
Unattributable Unattributable | Other | 667ms | 0 KB | — | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 550ms | 139 KB | 41% | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 486ms | 166 KB | 38% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 469ms | 151 KB | 40% | $6/mo | Costly |
www.brides.com www.brides.com | Other | 332ms | 30 KB | — | $4/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 315ms | 188 KB | 76% | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 285ms | 123 KB | 50% | $4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 193ms | 124 KB | 60% | $3/mo | Essential |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 119ms | 34 KB | — | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 105ms | 9 KB | — | $1/mo | Essential |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 67ms | 7 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.brides.com adds 838ms and costs ~$11/month
- Unattributable adds 667ms and costs ~$9/month
- Google Tag Manager adds 550ms and costs ~$7/month
- Google Tag Manager adds 486ms and costs ~$6/month
- Google Tag Manager adds 469ms and costs ~$6/month
- www.brides.com adds 332ms and costs ~$4/month
- securepubads.g.doubleclick.net adds 315ms and costs ~$4/month
- Google Tag Manager adds 285ms 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.brides.com takes 838ms 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 667ms 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 550ms 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 486ms 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 469ms 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.brides.com takes 332ms 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 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
76% 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
Google Tag Manager takes 285ms 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