Performance
· 23 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.
661 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.64 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
41 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.
940 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.64 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 243 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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction13 images, 0 KB saveableREVIEW
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
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
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
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
BJS Execution Cost981ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 455ms | 9ms | 0ms | 1st |
| https://sevano.com/ | 257ms | 32ms | 9ms | 1st |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.index_DBJuOp6w.esm.js | 190ms | 10ms | 0ms | 3rd |
| https://sevano.com/cdn/wpm/b704e843dw38e170ffp88ffc213ma0cfcc05m.js | 79ms | 60ms | 6ms | 1st |
BJS Bundles163 scripts, 130 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://d2fk970j0emtue.cloudfront.net/shop/js/free-gift-cart-upsell-pro.min.js?shop=743170-29.myshopify.com | 84 KB | 70 KB (83%) | ✓ | 3rd |
| https://sevano.com/cdn/wpm/b704e843dw38e170ffp88ffc213ma0cfcc05m.js | 72 KB | 31 KB (44%) | ✓ | 1st |
| https://s.adroll.com/j/3FRXAMAR7JBVRMSTRD576R/roundtrip.js | 36 KB | 29 KB (83%) | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/loader.init-shop-cart-sync.en.esm.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/storefront/standard-actions.js | 5 KB | — | ✓ | 3rd |
| https://sevano.com/cdn/shop/t/73/assets/constants.js?v=132983761750457495441779543162 | 1 KB | — | ✓ | 1st |
| https://sevano.com/cdn/shop/t/73/assets/pubsub.js?v=25310214064522200911779543162 | 1 KB | — | ✓ | 1st |
| https://sevano.com/cdn/shop/t/73/assets/global.js?v=184345515105158409801779543162 | 9 KB | — | ✓ | 1st |
| https://sevano.com/cdn/shop/t/73/assets/details-disclosure.js?v=13653116266235556501779543162 | 1 KB | — | ✓ | 1st |
| https://sevano.com/cdn/shop/t/73/assets/details-modal.js?v=25581673532751508451779543162 | 1 KB | — | ✓ | 1st |
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
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
CPage Weight InventoryAction243 resources · 2.4 MB · 130 KB savings availableREVIEW
~129.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 243 resources | 2.4 MiB | ||||||
AThird-Party Impact29% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (188 KB)PASS
Web fonts
5
188 KB total
Render-blocking
0
of 5
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
A+Asset CompressionAll 1 asset host use brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability16 Server-Timing entries advertisedPASS
A+Server 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 Waterfall243 requests over 4447msINFO
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 | 190ms | 21 KB | — | €1/mo | Optional |
Image Optimization19 images, 500 KB total, 443 KB wastedINFO
Image Optimization Audit
Total Images
19
Total Size
500 KB
Oversized
5
Wasted
443 KB