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.
675 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
846 ms
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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.04 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.
846 ms
Page Load Progression
375 ms
750 ms
1.1 s 1.5 s 1.9 s 2.2 s 2.6 s 3.0 sDThird-Party ImpactAction64% third-party, 0 ms blockingFIX
DJS BundlesAction76 scripts, 483 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-DJE56K4YGG&cx=c>m=4e6562 | 162 KB | 111 KB (69%) | ✓ | 3rd |
| https://js.smile.io/v1/vendor-11e8ecbc70b2c4c961f5.modern.js | 102 KB | 82 KB (81%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DJE56K4YGG | 162 KB | 67 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11157612849 | 138 KB | 52 KB (37%) | ✓ | 3rd |
| https://subscription-admin.appstle.com/assets/js/appstle-subscription.min.js?shop=sprinkle-pop.myshopify.com&v=1777621962566 | 53 KB | 50 KB (95%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 32 KB (33%) | ✓ | 3rd |
| https://sprinklepop.shop/cdn/wpm/b81a24193wb0bf602apf85b30fcm71c6b379m.js | 63 KB | 26 KB (41%) | ✓ | 1st |
| https://live.visually-io.com/v/visually.js | 25 KB | 23 KB (93%) | ✓ | 3rd |
| https://a.klaviyo.com/media/js/onsite/onsite.js | 33 KB | 21 KB (64%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js | 30 KB | 21 KB (69%) | ✓ | 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 InventoryAction151 resources · 2.0 MB · 483 KB savings availableFIX
~483.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 151 resources | 2.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction2.0 MB transferred, 151 requestsREVIEW
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
BImage Optimization27 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
BJS Execution Cost577ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 196ms | 27ms | 0ms | 3rd |
| https://sprinklepop.shop/ | 166ms | 25ms | 42ms | 1st |
| https://sprinklepop.shop/cdn/wpm/b81a24193wb0bf602apf85b30fcm71c6b379m.js | 89ms | 69ms | 5ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=AW-11157612849 | 71ms | 62ms | 8ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DJE56K4YGG | 55ms | 45ms | 9ms | 3rd |
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (21 KB)PASS
Web fonts
2
21 KB total
Render-blocking
0
of 2
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+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability17 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall151 requests over 2040msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 196ms | 0 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 71ms | 138 KB | 37% | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 55ms | 162 KB | 41% | €0/mo | Optional |
56% 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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)
LCP (p75)
1115 ms
97% good
INP (p75)
136 ms
80% good
CLS (p75)
0.000
93% good
FCP (p75)
1016 ms
TTFB (p75)
358 ms
Image Optimization23 images, 248 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
23
Total Size
248 KB