Performance
· 15 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.
1.36 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.56 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.68 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.
1.56 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 103 requestsFIX
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction3002ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/react-dom-Dm400Lyn.js | 2175ms | 1837ms | 0ms | 3rd |
| https://www.shopify.com/es-es | 391ms | 5ms | 7ms | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/route-D9Qi_UOK.js | 228ms | 12ms | 0ms | 3rd |
| Unattributable | 208ms | 50ms | 0ms | 3rd |
DPage Weight InventoryAction103 resources · 2.4 MB · 86 KB savings availableFIX
~85.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 103 resources | 2.4 MiB | ||||||
BImage Optimization32 images, 0 KB saveableREVIEW
BJS Bundles55 scripts, 86 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/utils-BdUxjvQA.js | 43 KB | 38 KB (88%) | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/chunk-JZWAC4HX-CgPBot6T.js | 35 KB | 25 KB (71%) | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/route-D9Qi_UOK.js | 72 KB | 24 KB (33%) | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/entry.client-HVrhfgkt.js | 4 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/react-BRzFi5rc.js | 3 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/react-dom-Dm400Lyn.js | 40 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/jsx-runtime-qixoEAOq.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/constants-D7srLZTo.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/preload-helper-Bv82IuyZ.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/world/brochure/production-homepage/assets/enums-Bnt8S1FI.js | 3 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (236 KB)PASS
Web fonts
6
236 KB total
Render-blocking
0
of 6
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+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
AHTTP Cachingmax-age=3600 (1 hour)PASS
max-age=3600
| Directive | Value | Meaning |
|---|---|---|
| max-age | 3600 | Cache for 1 hour |
Network Waterfall103 requests over 1042msINFO
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 | 2175ms | 40 KB | — | €12/mo | Costly |
www.shopify.com www.shopify.com | Other | 391ms | 90 KB | — | €2/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 228ms | 72 KB | 33% | €1/mo | Costly |
Unattributable Unattributable | Other | 208ms | 0 KB | — | €1/mo | Costly |
These scripts may cost more than they're worth
- cdn.shopify.com adds 2175ms and costs ~€12/month
- www.shopify.com adds 391ms and costs ~€2/month
- cdn.shopify.com adds 228ms and costs ~€1/month
- Unattributable adds 208ms and costs ~€1/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
cdn.shopify.com takes 2175ms 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.shopify.com takes 391ms 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 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
Unattributable takes 208ms 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