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.
664 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
224 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.050
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.47 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.
5.33 s
Page Load Progression
FPage Weight BudgetAction10.2 MB transferred, 349 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 CostAction5048ms 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 | 1609ms | 81ms | 2ms | 1st |
| https://www.simplymerino.com/ | 1449ms | 60ms | 16ms | 1st |
| Unattributable | 709ms | 33ms | 0ms | 1st |
| https://www.simplymerino.com/cdn/shop/t/46/assets/theme.js?v=176738131354449998731792165282 | 340ms | 138ms | 3ms | 1st |
| https://www.powr.io/powr.js?powr-token=simplymerino.myshopify.com&external-type=shopify&shop=simplymerino.myshopify.com | 190ms | 185ms | 4ms | 3rd |
| https://www.simplymerino.com/cdn/wpm/b49d3b31aw169a7c20pfc9cb2c9m68241e55m.js | 142ms | 113ms | 10ms | 1st |
| https://connect.facebook.net/signals/config/287006314199075?v=2.9.427&r=stable&domain=www.simplymerino.com&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%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%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%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 115ms | 91ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X3G0XHNHST | 113ms | 93ms | 18ms | 3rd |
| https://forms.spoks.com/scripts/external-forms.BIRx8Opg.js | 72ms | 45ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-M63DXK3 | 69ms | 54ms | 15ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction141 scripts, 612 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-X3G0XHNHST&cx=c>m=4e6al0 | 186 KB | 125 KB (67%) | ✓ | 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 | 146 KB | 84 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X3G0XHNHST | 186 KB | 74 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-M63DXK3 | 155 KB | 67 KB (43%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 112 KB | 39 KB (35%) | ✓ | 3rd |
| https://www.simplymerino.com/cdn/wpm/b49d3b31aw169a7c20pfc9cb2c9m68241e55m.js | 83 KB | 38 KB (46%) | ✓ | 1st |
| https://connect.facebook.net/signals/config/287006314199075?v=2.9.427&r=stable&domain=www.simplymerino.com&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%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%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%2C91%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 InventoryAction349 resources · 10.2 MB · 612 KB savings availableFIX
~612.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 349 resources | 10.2 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
A+Third-Party Impact12% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
AImage Optimization123 images, 0 KB saveablePASS
A+Font Loading3 fonts (52 KB)PASS
Web fonts
3
52 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+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+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall349 requests over 7290msINFO
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 | 190ms | 13 KB | — | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 115ms | 96 KB | 34% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 113ms | 186 KB | 40% | €1/mo | Optional |
forms.spoks.com forms.spoks.com | Other | 72ms | 141 KB | 78% | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 69ms | 155 KB | 43% | €0/mo | Optional |
shopify.privy.com shopify.privy.com | Other | 59ms | 146 KB | 58% | €0/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 58ms | 112 KB | 35% | €0/mo | Optional |
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
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
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