Performance
· 28 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.
3.34 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.69 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.29 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.
7.31 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.
18.58 s
Page Load Progression
FPage Weight BudgetAction6.0 MB transferred, 323 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
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 CostAction20031ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.simplymerino.com/cdn/shop/t/46/assets/vendor.js?v=159107135763146981071792165283 | 6857ms | 307ms | 5ms | 1st |
| https://www.simplymerino.com/ | 4145ms | 190ms | 66ms | 1st |
| Unattributable | 2306ms | 166ms | 0ms | 1st |
| https://www.simplymerino.com/cdn/shop/t/46/assets/theme.js?v=176738131354449998731792165282 | 1338ms | 437ms | 9ms | 1st |
| https://www.powr.io/powr.js?powr-token=simplymerino.myshopify.com&external-type=shopify&shop=simplymerino.myshopify.com | 874ms | 855ms | 16ms | 3rd |
| https://www.simplymerino.com/cdn/wpm/b49d3b31aw169a7c20pfc9cb2c9m68241e55m.js | 835ms | 576ms | 42ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-X3G0XHNHST | 608ms | 398ms | 95ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 432ms | 351ms | 77ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-M63DXK3 | 399ms | 322ms | 75ms | 3rd |
| https://www.simplymerino.com/cdn/shop/t/46/assets/scroll-to-top.js?v=177128408596636664611792165269 | 386ms | 3ms | 0ms | 1st |
Showing top 10 of 21 scripts
FJS BundlesAction148 scripts, 604 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=GT-M63DXK3&cx=c>m=4e6al0 | 155 KB | 117 KB (76%) | ✓ | 3rd |
| https://forms.spoks.com/scripts/external-forms.BIRx8Opg.js | 141 KB | 109 KB (78%) | ✓ | 3rd |
| https://shopify.privy.com/widget.js?shop=simplymerino.myshopify.com | 147 KB | 84 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X3G0XHNHST | 187 KB | 71 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-M63DXK3 | 155 KB | 70 KB (45%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 116 KB | 39 KB (34%) | ✓ | 3rd |
| https://www.simplymerino.com/cdn/wpm/b49d3b31aw169a7c20pfc9cb2c9m68241e55m.js | 83 KB | 37 KB (45%) | ✓ | 1st |
| https://connect.facebook.net/signals/config/287006314199075?v=2.9.427&r=canary&domain=www.simplymerino.com&im=1&hme=766752a074f0cb0756dd3275a46fdecbcfe3de1ab8f573546734b619e44d384f&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C74%2C91%2C331%2C330%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 96 KB | 33 KB (34%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js | 33 KB | 22 KB (66%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js | 30 KB | 21 KB (70%) | ✓ | 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
DPage Weight InventoryAction323 resources · 6.0 MB · 604 KB savings availableFIX
~603.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 323 resources | 6.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
BCSS Performance Depth2 CSS depth issue(s) detectedREVIEW
AThird-Party Impact20% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization84 images, 0 KB saveablePASS
A+Font Loading4 fonts (72 KB)PASS
Web fonts
4
72 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 Hints177 hints, 0 missing preconnectsPASS
Current Resource Hints
177 resource hints configured
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
AAsset Compression1 of 4 asset hosts still on gzipPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability1 Server-Timing entries advertisedPASS
AServer Response Intelligence2 server-response signal(s) detectedPASS
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 Waterfall323 requests over 7201msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.powr.io www.powr.io | Other | 874ms | 13 KB | — | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 608ms | 187 KB | 38% | €3/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 432ms | 116 KB | 34% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 399ms | 155 KB | 45% | €2/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 357ms | 96 KB | 34% | €2/mo | Costly |
forms.spoks.com forms.spoks.com | Other | 285ms | 141 KB | 78% | €2/mo | Costly |
shopify.privy.com shopify.privy.com | Other | 228ms | 147 KB | 58% | €1/mo | Costly |
ajax.googleapis.com ajax.googleapis.com | Other | 183ms | 33 KB | 66% | €1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 161ms | 21 KB | — | €1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 92ms | 15 KB | — | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 89ms | 155 KB | 76% | €0/mo | Optional |
ajax.googleapis.com ajax.googleapis.com | Other | 53ms | 30 KB | 70% | €0/mo | Optional |
These scripts may cost more than they're worth
- www.powr.io adds 874ms and costs ~€5/month
- Google Tag Manager adds 608ms and costs ~€3/month
- Facebook Pixel adds 432ms and costs ~€2/month
- Google Tag Manager adds 399ms and costs ~€2/month
- Facebook Pixel adds 357ms and costs ~€2/month
- forms.spoks.com adds 285ms and costs ~€2/month
- shopify.privy.com adds 228ms and costs ~€1/month
www.powr.io takes 874ms 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 608ms 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
Facebook Pixel takes 432ms 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 399ms 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
Facebook Pixel takes 357ms 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
forms.spoks.com 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
78% of forms.spoks.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
shopify.privy.com takes 228ms 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
58% of shopify.privy.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
66% of ajax.googleapis.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
76% 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
70% of ajax.googleapis.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 (2026-09-23 — 2026-10-20)
LCP (p75)
1730 ms
90% good
INP (p75)
138 ms
88% good
CLS (p75)
0.030
96% good
FCP (p75)
1419 ms
TTFB (p75)
608 ms
Image Optimization200 images, 2833 KB total, 998 KB wastedINFO
Image Optimization Audit
Total Images
200
Total Size
2833 KB
Oversized
18
Wasted
998 KB