Performance
· 24 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.
930 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.50 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
146 ms
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.
2.96 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.
5.02 s
Page Load Progression
FPage Weight BudgetAction3.8 MB transferred, 441 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
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
FJS Execution CostAction5768ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js | 1646ms | 163ms | 6ms | 1st |
| https://cdn.shopify.com/extensions/01a1493b-a12f-7663-8b61-1bf8ca85855c/grouptify-combined-listings-464/assets/swatch-scripts.js | 1318ms | 178ms | 6ms | 3rd |
| https://shopnoble.com/ | 1217ms | 170ms | 31ms | 1st |
| Unattributable | 506ms | 83ms | 0ms | 1st |
| https://cdn.shopify.com/extensions/01a15269-2ff3-767b-9fc5-048eadddfcc0/rivo-loyalty-rewards-referrals-828/assets/ba_rivo_profile.js | 290ms | 205ms | 8ms | 3rd |
| https://cdn.shopify.com/extensions/01a15436-1c9b-784e-adf8-bcb26bc03ad0/essential-post-purchase-upsell-1738/assets/stylex-CRzDzrLw.js | 207ms | 95ms | 0ms | 3rd |
| https://scripts.clarity.ms/0.8.72-beta/clarity.js | 168ms | 156ms | 1ms | 3rd |
| https://triplewhale-pixel.web.app/triplefw.js?shop=noblecarriage.myshopify.com | 117ms | 84ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-958581273 | 90ms | 79ms | 10ms | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.register_cLcgCW8c.esm.js | 84ms | 48ms | 0ms | 3rd |
Showing top 10 of 12 scripts
FJS BundlesAction241 scripts, 545 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.506.io/eg/script.js?shop=noblecarriage.myshopify.com&v=12 | 105 KB | 87 KB (83%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a15436-1c9b-784e-adf8-bcb26bc03ad0/essential-post-purchase-upsell-1738/assets/stylex-CRzDzrLw.js | 108 KB | 73 KB (69%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-958581273 | 165 KB | 63 KB (38%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a15525-5c18-762d-9675-96a0114179b6/loop-returns-519/assets/return-coverage-block-v2.js | 93 KB | 47 KB (50%) | ✓ | 3rd |
| https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js | 83 KB | 44 KB (54%) | ✓ | 1st |
| https://cdn.shopify.com/extensions/01a10fc0-bc79-7aad-b6b5-46a542bdb0a9/labeler-4.5/assets/bundle.js | 62 KB | 43 KB (71%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a15269-2ff3-767b-9fc5-048eadddfcc0/rivo-loyalty-rewards-referrals-828/assets/ba_rivo_profile.js | 76 KB | 30 KB (39%) | ✓ | 3rd |
| https://triplewhale-pixel.web.app/triplepx.js?shop=noblecarriage.myshopify.com | 49 KB | 29 KB (61%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a15491-b866-7ecd-ac41-739ea59ef213/essential-pre-order-presale-3692/assets/product-CzwuAQcs.js | 41 KB | 29 KB (73%) | ✓ | 3rd |
| https://cdn.livechatinc.com/tracking.js | 35 KB | 28 KB (82%) | ✓ | 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 InventoryAction441 resources · 3.8 MB · 545 KB savings availableFIX
~544.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 441 resources | 3.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BThird-Party Impact44% third-party, 0 ms blockingREVIEW
CDocument CompressionActionDocument response served uncompressedREVIEW
BAsset Compression1 of 5 asset hosts serve text uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
A+Text CompressionAll text resources are compressedPASS
AImage Optimization43 images, 0 KB saveablePASS
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
A+Font Loading4 fonts (52 KB)PASS
Web fonts
4
52 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~3 KB and ~6 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) 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 Waterfall441 requests over 8359msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.shopify.com cdn.shopify.com | Other | 1318ms | 22 KB | — | €7/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 290ms | 76 KB | 39% | €2/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 207ms | 108 KB | 69% | €1/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 168ms | 26 KB | — | €1/mo | Optional |
triplewhale-pixel.web.app triplewhale-pixel.web.app | Other | 117ms | 49 KB | 57% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 90ms | 165 KB | 38% | €0/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 84ms | 15 KB | — | €0/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 70ms | 93 KB | 50% | €0/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 56ms | 62 KB | 71% | €0/mo | Optional |
These scripts may cost more than they're worth
- cdn.shopify.com adds 1318ms and costs ~€7/month
- cdn.shopify.com adds 290ms and costs ~€2/month
- cdn.shopify.com adds 207ms and costs ~€1/month
42% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
cdn.shopify.com takes 1318ms 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
cdn.shopify.com takes 290ms 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
cdn.shopify.com takes 207ms 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 cdn.shopify.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 triplewhale-pixel.web.app'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
50% of cdn.shopify.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
71% of cdn.shopify.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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-09-20 — 2026-10-17)
LCP (p75)
2008 ms
84% good
INP (p75)
133 ms
89% good
CLS (p75)
0.000
98% good
FCP (p75)
1077 ms
TTFB (p75)
522 ms
Image Optimization88 images, 263 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
88
Total Size
263 KB
Oversized
1