https://www.mossandmolt.com
Performance
· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
87
GRADE
B
FIX
3
REVIEW
3
PASS
18
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
31
100
100
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
5.07 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.40 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
350 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.352
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.15 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.
12.62 s
Page Load Progression
Checks
2718 PASS 3 REVIEW 3 FIX
FPage Weight BudgetAction3.2 MB transferred, 449 requestsFIX
Page Weight Budget
Action3.2 MB transferred, 449 requests
3.2 MB transferred, 449 requests
Warning::
Page weighs 5.2 MB (3.2 MB transferred)
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Warning::
JavaScript is 645 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 645 KB
Warning::
449 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.66 g CO2 per page load
3.2 MB transferred
449 requests
0.66 g CO2 per page load
Images 1.1 MiB 34%
Other 1002.8 KiB 31%
JavaScript 644.5 KiB 20%
HTML 260.3 KiB 8%
Fonts 77.7 KiB 2%
Other 58.9 KiB 2%
CSS 49.5 KiB 2%
Other 36.2 KiB 1%
Other 7.0 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
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
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.
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 CostAction9203ms total JS executionFIX
JS Execution Cost
Action9203ms total JS execution
9203ms total JS execution
Warning::
https://www.mossandmolt.com/: 5027ms CPU time
Warning::
Unattributable: 1362ms CPU time
Warning::
https://www.mossandmolt.com/cdn/wpm/b610a19cewf693...: 800ms CPU time
Warning::
https://cdn.shopify.com/extensions/01a19ad6-3b93-7...: 625ms CPU time
Warning::
https://www.mossandmolt.com/cdn/shop/t/18/assets/m...: 517ms CPU time
Info::
Third-party scripts: 1035ms (11% of total)
Main Thread Breakdown
Style & Layout 34% Script Evaluation 31% Other 26% Parse HTML & CSS 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.mossandmolt.com/ | 5027ms | 911ms | 112ms | 1st |
| Unattributable | 1362ms | 95ms | 0ms | 1st |
| https://www.mossandmolt.com/cdn/wpm/b610a19cewf693d529pf324840bm6169d9b4m.js | 800ms | 557ms | 26ms | 1st |
| https://cdn.shopify.com/extensions/01a19ad6-3b93-72e5-83af-d51f414141d9/judgeme-839/assets/loader.js | 625ms | 355ms | 1ms | 3rd |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/mm-shrimp-bar.js?v=120813251631150360881793383007 | 517ms | 80ms | 0ms | 1st |
| https://www.mossandmolt.com/cdn/shopifycloud/storefront/assets/storefront/remote_product_tracking-91d95044.js | 274ms | 187ms | 4ms | 1st |
| https://cdn.shopify.com/storefront/web-components/account.js | 201ms | 68ms | 0ms | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.register_oML0Hu4L.esm.js | 157ms | 119ms | 0ms | 3rd |
| https://www.mossandmolt.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.14.0.min.js | 118ms | 109ms | 7ms | 1st |
| https://www.mossandmolt.com/cdn/shopifycloud/storefront/assets/shop_events_listener-819172a8.js | 70ms | 51ms | 1ms | 1st |
Showing top 10 of 11 scripts
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.
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
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 InventoryAction449 resources · 3.2 MB · 35 KB savings availableREVIEW
Page Weight Inventory
Action449 resources · 3.2 MB · 35 KB savings available
449 resources · 3.2 MB · 35 KB savings available
Warning::
Page weight 3.2 MB exceeds 1 MB target by 2.2 MB
Got: 3.2 MB Expected: ≤ 1 MB
Info::
189 third-party resources (21% of weight)
449 resources · 3.2 MiB · 189 third-party 2.2 MiB over 1MB target
JavaScript 52% · 1.7 MiB
Image 34% · 1.1 MiB
Document 9% · 278.5 KiB
Font 2% · 77.7 KiB
CSS 2% · 55.5 KiB
Other 1% · 28.0 KiB
~35.1 KiB of savings available
Remove unused JavaScript: 35.1 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 449 resources | 3.2 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::
22 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::
1 `@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.
AThird-Party Impact21% third-party, 0 ms blockingPASS
Third-Party Impact
21% third-party, 0 ms blocking
21% third-party, 0 ms blocking
Info::
Third-party code accounts for 21% of page weight (676.8 KiB of 3.2 MiB)
Info::
Third-party blocking time is low (0 ms)
79%
21%
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 Optimization36 images, 0 KB saveablePASS
Image Optimization
36 images, 0 KB saveable
36 images, 0 KB saveable
Info::
All images are well-optimized
36 images 1.1 MB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+Font Loading4 fonts (78 KB)PASS
Font Loading
4 fonts (78 KB)
4 fonts (78 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
78 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
mossmolt-jersey20.woff2 woff2 swap
Size 29 KB
Load time 28 ms
Start 190 ms
Risk FOUT — text flashes from fallback to web font
mossmolt-atkinson-400.w... woff2 swap
Size 24 KB
Load time 29 ms
Start 701 ms
Risk FOUT — text flashes from fallback to web font
mossmolt-atkinson-700.w... woff2 swap
Size 24 KB
Load time 29 ms
Start 701 ms
Risk FOUT — text flashes from fallback to web font
x-font-woff;charset=utf... woff swap
Size 1 KB
Load time 19 ms
Start 1.9 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
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+JS Bundles324 scripts, 35 KB unusedPASS
JS Bundles
324 scripts, 35 KB unused
324 scripts, 35 KB unused
Warning::
https://www.mossandmolt.com/cdn/wpm/b610a19cewf693...: 35 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 35 KB
35 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.mossandmolt.com/cdn/wpm/b610a19cewf693d529pf324840bm6169d9b4m.js | 84 KB | 35 KB (42%) | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/standard-actions-override.js?v=171683365447094389611792123207 | 1 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/page-view-event.js?v=12823247316348680231792123205 | 1 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/utilities.js?v=128964188705738871001792123207 | 5 KB | — | ✓ | 1st |
| https://cdn.shopify.com/storefront/standard-events.js | 4 KB | — | ✓ | 3rd |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/component.js?v=175690430936884589731792123206 | 3 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/section-renderer.js?v=165897709872489896681792123206 | 2 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/section-hydration.js?v=108434990705342316311792123206 | 1 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/morph.js?v=163551064521986254391792123207 | 4 KB | — | ✓ | 1st |
| https://www.mossandmolt.com/cdn/shop/t/18/assets/focus.js?v=60436577539430446401792123206 | 1 KB | — | ✓ | 1st |
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
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 Hints216 hints, 0 missing preconnectsPASS
Resource Hints
216 hints, 0 missing preconnects
216 hints, 0 missing preconnects
Info::
Page uses 216 resource hint(s)
Current Resource Hints
preconnect—
preload 2
dns-prefetch 4
prefetch
+200
210216 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: 65)
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 Observability1 Server-Timing entries advertisedPASS
Server-Timing Observability
1 Server-Timing entries advertised
1 Server-Timing entries advertised
Info::
Server-Timing header advertises 1 timing entries
AServer Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
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 9.2 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 Waterfall449 requests over 7215msINFO
Network Waterfall
449 requests over 7215ms
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
11% of JavaScript execution is third-party
First-party Third-party 1035ms · 31KB · €5/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.shopify.com cdn.shopify.com | Other | 625ms | 4 KB | — | €3/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 201ms | 10 KB | — | €1/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 157ms | 15 KB | — | €1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 52ms | 1 KB | — | €0/mo | Optional |
cdn.shopify.com
Other
Execution 625ms
Transfer 4 KB
Monthly Cost €3/mo
cdn.shopify.com
Other
Execution 201ms
Transfer 10 KB
Monthly Cost €1/mo
cdn.shopify.com
Other
Execution 157ms
Transfer 15 KB
Monthly Cost €1/mo
cdn.shopify.com
Other
Execution 52ms
Transfer 1 KB
Monthly Cost €0/mo
These scripts may cost more than they're worth
- cdn.shopify.com adds 625ms and costs ~€3/month
- cdn.shopify.com adds 201ms and costs ~€1/month
cdn.shopify.com takes 625ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.shopify.com takes 201ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Image Optimization73 images, 1196 KB total, 0 KB wastedINFO
Image Optimization
73 images, 1196 KB total, 0 KB wasted
Image Optimization Audit
Total Images
73
Total Size
1196 KB
24 missing dimensions 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.