https://lovelyhair.shop
Performance
· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
88
GRADE
B
FIX
3
REVIEW
4
PASS
17
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
54
100
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.12 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
382 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.
5.56 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.
12.08 s
Page Load Progression
Checks
2717 PASS 4 REVIEW 3 FIX
FPage Weight BudgetAction2.9 MB transferred, 215 requestsFIX
Page Weight Budget
Action2.9 MB transferred, 215 requests
2.9 MB transferred, 215 requests
Warning::
Page weighs 3.8 MB (2.9 MB transferred)
Warning::
Images are 1.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.2 MB
Info::
Fonts are 500 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 500 KB
Warning::
215 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.61 g CO2 per page load
2.9 MB transferred
215 requests
0.61 g CO2 per page load
Images 1.2 MiB 43%
Other 656.5 KiB 22%
Fonts 499.8 KiB 17%
JavaScript 346.6 KiB 12%
HTML 76.8 KiB 3%
CSS 65.3 KiB 2%
Other 46.0 KiB 2%
Other 6.6 KiB 0%
Other 2.4 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Why this matters
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
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.
Why this matters
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
FJS Execution CostAction7286ms total JS executionFIX
JS Execution Cost
Action7286ms total JS execution
7286ms total JS execution
Warning::
https://lovelyhair.shop/: 5275ms CPU time
Warning::
Unattributable: 766ms CPU time
Warning::
https://lovelyhair.shop/cdn/wpm/bec790c88wf78f89cd...: 443ms CPU time
Info::
https://lovelyhair.shop/cdn/shopifycloud/storefron...: 235ms CPU time
Info::
https://lovelyhair.shop/cdn/shopifycloud/storefron...: 172ms CPU time
Info::
Third-party scripts: 97ms (1% of total)
Main Thread Breakdown
Other 55% Style & Layout 19% Script Evaluation 16% Rendering 5%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://lovelyhair.shop/ | 5275ms | 170ms | 49ms | 1st |
| Unattributable | 766ms | 34ms | 0ms | 1st |
| https://lovelyhair.shop/cdn/wpm/bec790c88wf78f89cdp106eb8c0mb54b3ae5m.js | 443ms | 257ms | 27ms | 1st |
| https://lovelyhair.shop/cdn/shopifycloud/storefront/assets/storefront/remote_product_tracking-91d95044.js | 235ms | 22ms | 3ms | 1st |
| https://lovelyhair.shop/cdn/shopifycloud/storefront/assets/shop_events_listener-4e26a9ce.js | 172ms | 123ms | 3ms | 1st |
| https://lovelyhair.shop/cdn/s/trekkie.storefront.6efba1340ec6769622eb0d10b5cb070d43fb8d55.min.js | 129ms | 102ms | 24ms | 1st |
| https://lovelyhair.shop/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.11.0.min.js | 115ms | 96ms | 8ms | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js | 97ms | 72ms | 21ms | 3rd |
| https://lovelyhair.shop/cdn/shop/t/13/assets/global.js?v=46603718469393930171790899505 | 53ms | 16ms | 1ms | 1st |
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BJS Bundles103 scripts, 67 KB unusedREVIEW
JS Bundles
103 scripts, 67 KB unused
103 scripts, 67 KB unused
Warning::
https://lovelyhair.shop/cdn/wpm/bec790c88wf78f89cd...: 46 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7....: 20 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 67 KB
67 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://lovelyhair.shop/cdn/wpm/bec790c88wf78f89cdp106eb8c0mb54b3ae5m.js | 85 KB | 46 KB (55%) | ✓ | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js | 27 KB | 20 KB (76%) | ✓ | 3rd |
| https://lovelyhair.shop/checkouts/internal/preloads.js?locale=en-FR | 4 KB | — | ✓ | 1st |
| https://shop.app/checkouts/internal/preloads.js?locale=en-FR&shop_id=95377490287 | 0 KB | — | ✓ | 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://cdn.shopify.com/shopifycloud/shop-js/modules/v2/client.init-shop-cart-sync_DOQ7rkrY.en.esm.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.document_DMcRsBXN.esm.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.window_CAbVMZox.esm.js | 1 KB | — | ✓ | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.init_CWcpnDvP.esm.js | 1 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
CPage Weight InventoryAction215 resources · 2.9 MB · 67 KB savings availableREVIEW
Page Weight Inventory
Action215 resources · 2.9 MB · 67 KB savings available
215 resources · 2.9 MB · 67 KB savings available
Warning::
Page weight 2.9 MB exceeds 1 MB target by 1.9 MB
Got: 2.9 MB Expected: ≤ 1 MB
Info::
~67 KB of savings available
Info::
46 third-party resources (3% of weight)
Info::
1 resources over 200KB
215 resources · 2.9 MiB · 46 third-party 1.9 MiB over 1MB target
Image 43% · 1.3 MiB
JavaScript 34% · 1.0 MiB
Font 17% · 499.8 KiB
Document 3% · 81.9 KiB
CSS 2% · 65.3 KiB
Other 1% · 22.5 KiB
~66.5 KiB of savings available
Remove unused JavaScript: 66.5 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 215 resources | 2.9 MiB | ||||||
BCSS Performance Depth2 CSS depth issue(s) detectedREVIEW
CSS Performance Depth
2 CSS depth issue(s) detected
2 CSS depth issue(s) detected
Warning::
43 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Warning::
3 `@font-face` rule(s) without `font-display` -- causes FOIT
An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.
A+Third-Party Impact3% third-party, 0 ms blockingPASS
Third-Party Impact
3% third-party, 0 ms blocking
3% third-party, 0 ms blocking
Info::
Third-party code accounts for 3% of page weight (102.7 KiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
97%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Image Optimization35 images, 0 KB saveablePASS
Image Optimization
35 images, 0 KB saveable
35 images, 0 KB saveable
Info::
All images are well-optimized
35 images 1.2 MB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+Font Loading3 fonts (500 KB)PASS
Font Loading
3 fonts (500 KB)
3 fonts (500 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
500 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
inter-latin.woff2 woff2 swap
Size 173 KB
Load time 63 ms
Start 187 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
playfair-latin.woff2 woff2 swap
Size 153 KB
Load time 74 ms
Start 188 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
inter-italic-latin.woff2 woff2 swap
Size 175 KB
Load time 168 ms
Start 700 ms
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~250 KB and ~500 ms
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource Hints177 hints, 0 missing preconnectsPASS
Resource Hints
177 hints, 0 missing preconnects
177 hints, 0 missing preconnects
Info::
Page uses 177 resource hint(s)
Current Resource Hints
preconnect 1
preload 2
dns-prefetch 4
prefetch
+160
170177 resource hints configured
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+Document CompressionDocument response uses brotliPASS
Document Compression
Document response uses brotli
Document response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+Asset CompressionAll 1 asset host use brotliPASS
Asset Compression
All 1 asset host use brotli
All 1 asset host use brotli
Info::
cdn.shopify.com serves assets with brotli (assets: 10)
Got: cdn.shopify.com (text/javascript)
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server-Timing Observability18 Server-Timing entries advertisedPASS
Server-Timing Observability
18 Server-Timing entries advertised
18 Server-Timing entries advertised
Info::
Server-Timing header advertises 18 timing entries
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Info::
`Vary` header declared: accept-encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
Total JS execution time is 7.3 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall215 requests over 5090msINFO
Network Waterfall
215 requests over 5090ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
1% of JavaScript execution is third-party
First-party Third-party 97ms · 27KB · €1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdnjs cdnjs.cloudflare.com | CDN | 97ms | 27 KB | 76% | €1/mo | Optional |
cdnjs
CDN
Execution 97ms
Transfer 27 KB
Unused 76%
Monthly Cost €1/mo
76% of cdnjs's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization76 images, 693 KB total, 0 KB wastedINFO
Image Optimization
76 images, 693 KB total, 0 KB wasted
Image Optimization Audit
Total Images
76
Total Size
693 KB
5 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.