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https://silkandwillow.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
1
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
64
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.30 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.03 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

720 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.

13.46 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.

33.89 s

Page Load Progression

533 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
16
8 PASS 1 REVIEW 5 FIX
F
Page Weight Budget
Action
7.0 MB transferred, 248 requests
FIX
7.0 MB transferred, 248 requests
Critical::
Page weighs 11.4 MB (7.0 MB transferred)
Warning::
Images are 2.4 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.4 MB
Info::
CSS is 2.0 MB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 2.0 MB
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Warning::
248 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.5 g CO2 per page load
7.0 MB / 2.4 MB budget
7.0 MB transferred
248 requests
1.5 g CO2 per page load
Images 2.4 MiB 35%
CSS 2.0 MiB 29%
JavaScript 1.4 MiB 20%
Other 888.9 KiB 12%
Fonts 158.6 KiB 2%
HTML 78.6 KiB 1%
Other 22.7 KiB 0%
Other 10.1 KiB 0%
Other 8.3 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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (7.0 MiB of 7.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
7489ms total JS execution
FIX
7489ms total JS execution
Warning::
https://www.silkandwillow.com/: 1710ms CPU time
Warning::
Unattributable: 1452ms CPU time
Warning::
https://cdn.shopify.com/extensions/019d65e0-8476-7...: 1101ms CPU time
Warning::
https://cdn.shopify.com/extensions/019d49a1-9f25-7...: 1031ms CPU time
Warning::
https://loox.io/widget/V1-QKkkDrj/loox.16345949150...: 500ms CPU time
Warning::
Third-party scripts: 7489ms (100% of total)

Main Thread Breakdown

Script Evaluation 40% Other 28% Style & Layout 15% Script Parsing & Compilation 8% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://www.silkandwillow.com/1710ms124ms25ms3rd
Unattributable1452ms233ms0ms3rd
https://cdn.shopify.com/extensions/019d65e0-8476-7f65-8c25-affba06862c6/region-restrictions-318/assets/ip-blocker-embed.min.js1101ms190ms4ms3rd
https://cdn.shopify.com/extensions/019d49a1-9f25-7d05-a7f4-303cfe84faba/infinite-color-search-by-hoppn-391/assets/ics.js1031ms748ms79ms3rd
https://loox.io/widget/V1-QKkkDrj/loox.1634594915036.js?shop=silkandwillow.myshopify.com500ms335ms118ms3rd
https://www.silkandwillow.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js230ms204ms17ms3rd
https://www.googletagmanager.com/gtag/js?id=G-RDMZVKHJ9D216ms179ms36ms3rd
https://cdn.shopify.com/extensions/019d49a1-9f25-7d05-a7f4-303cfe84faba/infinite-color-search-by-hoppn-391/assets/color-wheel.js178ms101ms77ms3rd
https://www.silkandwillow.com/cdn/shop/t/35/assets/main.js?v=150891663519462644191759503178160ms44ms37ms3rd
https://connect.facebook.net/en_US/fbevents.js113ms81ms31ms3rd

Showing top 10 of 20 scripts

F
JS Bundles
Action
125 scripts, 604 KB unused
FIX
125 scripts, 604 KB unused
Warning::
https://cdn.shopify.com/extensions/019d49a1-9f25-7...: 178 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.jsdelivr.net/npm/hls.js@latest: 145 KB unused (91%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.shopify.com/extensions/019d49a1-9f25-7...: 138 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-RDMZ...: 65 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 33 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 604 KB
604 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.shopify.com/extensions/019d49a1-9f25-7d05-a7f4-303cfe84faba/infinite-color-search-by-hoppn-391/assets/color-wheel.js229 KB178 KB (78%)✓3rd
https://cdn.jsdelivr.net/npm/hls.js@latest159 KB145 KB (91%)✓3rd
https://cdn.shopify.com/extensions/019d49a1-9f25-7d05-a7f4-303cfe84faba/infinite-color-search-by-hoppn-391/assets/ics.js275 KB138 KB (50%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-RDMZVKHJ9D161 KB65 KB (40%)✓3rd
https://connect.facebook.net/en_US/fbevents.js95 KB33 KB (34%)✓3rd
https://www.silkandwillow.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js61 KB24 KB (40%)✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js33 KB22 KB (68%)✓3rd
https://static.klaviyo.com/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc073a286a0296d9f7/vendors~in_app_forms~signup_forms~client_identity~telemetry~onsite-triggering-v2~onsite-triggering~.00140035a0ee1bdef5e1.js?cb=23 KB—✓3rd
https://www.silkandwillow.com/cdn/shop/t/35/assets/cart-note.js?v=1261313214684498339317595031701 KB—✓3rd
https://shop.app/checkouts/internal/preloads.js?locale=en-ES&shop_id=30076891 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

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

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

D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
max-age0Cache for 0 seconds
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
post-check0
pre-check0
B
Image Optimization
45 images, 0 KB saveable
REVIEW
45 images, 0 KB saveable
Info::
All images are well-optimized
45 images 2.4 MB
0 oversized -0 KB
7 legacy format
0 missing dimensions CLS risk
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (159 KB)
PASS
6 fonts (159 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

159 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.0 shttps://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_n4.f8892cc1cfa3d797af6172c8eeddce62cf610e33.woff2anonymouspro_n4.f8892cc... https://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_n4.f8892cc1cfa3d797af6172c8eeddce62cf610e33.woff2 — 22.7 KiB — 0 ms — font-display: swaphttps://www.silkandwillow.com/cdn/fonts/cormorant/cormorant_n4.bd66e8e0031690b46374315bd1c15a17a8dcd450.woff2cormorant_n4.bd66e8e003... https://www.silkandwillow.com/cdn/fonts/cormorant/cormorant_n4.bd66e8e0031690b46374315bd1c15a17a8dcd450.woff2 — 23.5 KiB — 0 ms — font-display: swaphttps://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_n7.1abf60a1262a5f61d3e7f19599b5bc79deae580f.woff2anonymouspro_n7.1abf60a... https://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_n7.1abf60a1262a5f61d3e7f19599b5bc79deae580f.woff2 — 21.5 KiB — 0 ms — font-display: swaphttps://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_i4.e25745b6d033a0b4eea75ad1dd0df2b911abcf1f.woff2anonymouspro_i4.e25745b... https://www.silkandwillow.com/cdn/fonts/anonymous_pro/anonymouspro_i4.e25745b6d033a0b4eea75ad1dd0df2b911abcf1f.woff2 — 20.0 KiB — 0 ms — font-display: swaphttps://cdn.shopify.com/shop-assets/static_uploads/shoplift/GTStandard-MRegular.woff2GTStandard-MRegular.woff2 https://cdn.shopify.com/shop-assets/static_uploads/shoplift/GTStandard-MRegular.woff2 — 63.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2pxiEyp8kv8JHgFVrJJfecnF... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 7.7 KiB — 0 ms — font-display: swap
anonymouspro_n4.f8892cc... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
cormorant_n4.bd66e8e003... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
anonymouspro_n7.1abf60a... woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
anonymouspro_i4.e25745b... woff2 swap
Size 20 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GTStandard-MRegular.woff2 woff2 swap
Size 63 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
pxiEyp8kv8JHgFVrJJfecnF... woff2 swap
Size 8 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
248 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 7489ms · 1262KB · €81/mo
www.silkandwillow.com
Other
Costly
Execution 1710ms
Transfer 44 KB
Monthly Cost €19/mo
Unattributable
Other
Costly
Execution 1452ms
Transfer 0 KB
Monthly Cost €16/mo
cdn.shopify.com
Other
Costly
Execution 1101ms
Transfer 0 KB
Monthly Cost €12/mo
cdn.shopify.com
Other
Costly
Execution 1031ms
Transfer 275 KB
Unused 50%
Monthly Cost €11/mo
loox.io
Other
Costly
Execution 500ms
Transfer 34 KB
Monthly Cost €5/mo
www.silkandwillow.com
Other
Costly
Execution 230ms
Transfer 61 KB
Unused 40%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 216ms
Transfer 161 KB
Unused 40%
Monthly Cost €2/mo
cdn.shopify.com
Other
Optional
Execution 178ms
Transfer 229 KB
Unused 78%
Monthly Cost €2/mo
www.silkandwillow.com
Other
Optional
Execution 160ms
Transfer 22 KB
Monthly Cost €2/mo
Facebook Pixel
Advertising
Optional
Execution 113ms
Transfer 95 KB
Unused 34%
Monthly Cost €1/mo
ajax.googleapis.com
Other
Optional
Execution 107ms
Transfer 33 KB
Unused 68%
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 104ms
Transfer 28 KB
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 101ms
Transfer 21 KB
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 88ms
Transfer 23 KB
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 81ms
Transfer 37 KB
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 79ms
Transfer 31 KB
Monthly Cost €1/mo
jsDelivr
CDN
Optional
Execution 69ms
Transfer 159 KB
Unused 91%
Monthly Cost €1/mo
static.klaviyo.com
Other
Optional
Execution 64ms
Transfer 1 KB
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 54ms
Transfer 1 KB
Monthly Cost €1/mo
www.silkandwillow.com
Other
Optional
Execution 51ms
Transfer 5 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.silkandwillow.com adds 1710ms and costs ~€19/month
  • Unattributable adds 1452ms and costs ~€16/month
  • cdn.shopify.com adds 1101ms and costs ~€12/month
  • cdn.shopify.com adds 1031ms and costs ~€11/month
  • loox.io adds 500ms and costs ~€5/month
  • www.silkandwillow.com adds 230ms and costs ~€2/month
  • Google Tag Manager adds 216ms and costs ~€2/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

www.silkandwillow.com takes 1710ms 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

Unattributable takes 1452ms 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 1101ms 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 1031ms 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

50% of cdn.shopify.com'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

loox.io takes 500ms 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

www.silkandwillow.com takes 230ms 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

Google Tag Manager takes 216ms 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

78% of cdn.shopify.com'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

68% of ajax.googleapis.com'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

91% of jsDelivr'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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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