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https://www.mercedes-blanche.com

Performance

· 28 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
6
REVIEW
6
PASS
12
INFO
4

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

Mobile Desktop
54
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

3.25 s

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

12.37 s

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

420 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.070

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.32 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.

12.60 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
28
12 PASS 6 REVIEW 6 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 68 requests
FIX
2.5 MB transferred, 68 requests
Warning::
Page weighs 7.6 MB (2.5 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
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Info::
68 HTTP requests
Info::
Estimated 0.52 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
68 requests
0.52 g CO2 per page load
Images 1.2 MiB 48%
JavaScript 1.0 MiB 43%
CSS 161.4 KiB 6%
Fonts 42.9 KiB 2%
HTML 36.7 KiB 1%
Other 700 B 0%
Other 110 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

D
Third-Party Impact
Action
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (2.4 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
F
JS Execution Cost
Action
3669ms total JS execution
FIX
3669ms total JS execution
Warning::
https://assets.squarespace.com/universal/scripts-c...: 1399ms CPU time
Warning::
https://static1.squarespace.com/static/vta/5c5a519...: 682ms CPU time
Warning::
https://www.mercedes-blanche.com/: 494ms CPU time
Warning::
Unattributable: 330ms CPU time
Warning::
https://static1.squarespace.com/static/vta/5c5a519...: 293ms CPU time
Warning::
Third-party scripts: 2846ms (78% of total)

Main Thread Breakdown

Script Evaluation 46% Other 23% Style & Layout 16% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://assets.squarespace.com/universal/scripts-compressed/common-0b17e92e877ead8e-min.en-US.js1399ms945ms89ms3rd
https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/8706.9f9354c132882253b6ae.js682ms353ms4ms3rd
https://www.mercedes-blanche.com/494ms12ms15ms1st
Unattributable330ms6ms0ms1st
https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/site-bundle.52c5e172465bde21589d94024ac19bbf.js293ms177ms13ms3rd
https://assets.squarespace.com/universal/scripts-compressed/commerce-6c1901df676a71d0-min.en-US.js121ms52ms68ms3rd
https://assets.squarespace.com/universal/scripts-compressed/trigger-animation-runtime-8f26fbc93278e734-min.en-US.js89ms36ms4ms3rd
https://assets.squarespace.com/universal/scripts-compressed/performance-5aa74b6a09904ebf-min.en-US.js88ms73ms12ms3rd
https://assets.squarespace.com/universal/scripts-compressed/extract-css-moment-js-vendor-5b1fd9aed201e910-min.en-US.js69ms1ms67ms3rd
https://assets.squarespace.com/universal/scripts-compressed/common-vendors-d036b63cd556aa15-min.en-US.js55ms4ms47ms3rd

Showing top 10 of 11 scripts

D
JS Bundles
Action
44 scripts, 483 KB unused
FIX
44 scripts, 483 KB unused
Warning::
https://assets.squarespace.com/universal/scripts-c...: 156 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.squarespace.com/universal/scripts-c...: 154 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.squarespace.com/universal/scripts-c...: 67 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.squarespace.com/universal/scripts-c...: 43 KB unused (98%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.squarespace.com/universal/scripts-c...: 40 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 483 KB
483 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets.squarespace.com/universal/scripts-compressed/common-0b17e92e877ead8e-min.en-US.js255 KB156 KB (61%)✓3rd
https://assets.squarespace.com/universal/scripts-compressed/commerce-6c1901df676a71d0-min.en-US.js186 KB154 KB (83%)✓3rd
https://assets.squarespace.com/universal/scripts-compressed/common-vendors-d036b63cd556aa15-min.en-US.js180 KB67 KB (37%)✓3rd
https://assets.squarespace.com/universal/scripts-compressed/extract-css-moment-js-vendor-5b1fd9aed201e910-min.en-US.js44 KB43 KB (98%)✓3rd
https://assets.squarespace.com/universal/scripts-compressed/common-vendors-stable-590e3e89b3319eb6-min.en-US.js69 KB40 KB (58%)✓3rd
https://assets.squarespace.com/universal/scripts-compressed/performance-5aa74b6a09904ebf-min.en-US.js33 KB21 KB (66%)✓3rd
https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.imageFluid/b68f4315-2190-4f75-b82c-7fecd49919c4_1042/21575.js16 KB—✓3rd
https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/9214.6730a36ef02c933f0e6a.js14 KB—✓3rd
https://assets.squarespace.com/universal/scripts-compressed/extract-css-runtime-1002a3e1f5867562-min.en-US.js19 KB—✓3rd
https://assets.squarespace.com/universal/scripts-compressed/user-account-core-7d641bf58e867ff9-min.en-US.js29 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

F
Page Weight Inventory
Action
68 resources · 2.5 MB · 483 KB savings available
FIX
68 resources · 2.5 MB · 483 KB savings available
Warning::
Page weight 2.5 MB exceeds 1 MB target by 1.5 MB
Got: 2.5 MB Expected: ≤ 1 MB
Info::
~483 KB of savings available
Warning::
66 third-party resources (99% of weight)
Info::
3 resources over 200KB
68 resources · 2.5 MiB · 66 third-party 1.5 MiB over 1MB target
Image 48% · 1.2 MiB
JavaScript 43% · 1.0 MiB
CSS 6% · 161.4 KiB
Font 2% · 42.9 KiB
Document 1% · 36.7 KiB
Other 0% · 810 B

~482.5 KiB of savings available

Remove unused JavaScript: 482.5 KiB
F
HTTP Caching
Action
No cache headers
FIX
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.

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
C
Asset Compression
Action
1 of 3 asset hosts serve text uncompressed
REVIEW
1 of 3 asset hosts serve text uncompressed
Info::
assets.squarespace.com serves assets with gzip; brotli would be ~20% smaller (assets: 20)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: assets.squarespace.com (text/javascript)
Warning::
definitions.sqspcdn.com serves text assets uncompressed (assets: 19)
The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.
Got: definitions.sqspcdn.com (text/css)
Info::
static1.squarespace.com serves assets with gzip; brotli would be ~20% smaller (assets: 5)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: static1.squarespace.com (text/css)
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
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.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
Image Optimization
9 images, 0 KB saveable
PASS
9 images, 0 KB saveable
Info::
All images are well-optimized
9 images 1.2 MB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
3 fonts (43 KB)
PASS
3 fonts (43 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

43 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 3.3 s LCP 12.4 shttps://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/da0c3c0d-458f-46e2-9c64-bac004d4e8c1/latin.woff2latin.woff2 https://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/da0c3c0d-458f-46e2-9c64-bac004d4e8c1/latin.woff2 — 7.8 KiB — 37 ms — font-display: swaphttps://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/90ab4a5d-8a5b-4f76-b1ac-22b64d8b3e35/latin.woff2latin.woff2 https://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/90ab4a5d-8a5b-4f76-b1ac-22b64d8b3e35/latin.woff2 — 27.2 KiB — 35 ms — font-display: swaphttps://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/30b17899-6fc2-43cf-83b2-ca5c666802df/latin.woff2latin.woff2 https://file.squarespace-cdn.com/content/v2/namespaces/fonts/libraries/sqsp/assets/30b17899-6fc2-43cf-83b2-ca5c666802df/latin.woff2 — 7.9 KiB — 35 ms — font-display: swap
latin.woff2 woff2 swap
Size 8 KB
Load time 37 ms
Start 263 ms
Risk FOUT — text flashes from fallback to web font
latin.woff2 woff2 swap
Size 27 KB
Load time 35 ms
Start 265 ms
Risk FOUT — text flashes from fallback to web font
latin.woff2 woff2 swap
Size 8 KB
Load time 35 ms
Start 266 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
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
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 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
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
Total JS execution time is 3.7 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
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
9 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.
Network Waterfall
68 requests over 989ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 3.3 s LCP 12.4 shttps://www.mercedes-blanche.com// https://www.mercedes-blanche.com/ — 200 — 36.7 KiB — 155 ms — h2https://assets.squarespace.com/@sqs/polyfiller/1.7.7/modern.jsassets.squarespace.com/@sqs/polyfil... https://assets.squarespace.com/@sqs/polyfiller/1.7.7/modern.js — 200 — 12.3 KiB — 13 ms — h2https://assets.squarespace.com/universal/scripts-compressed/visitor-site-error-reporter-b022d9149a1aa14b-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/visitor-site-error-reporter-b022d9149a1aa14b-min.en-US.js — 200 — 1.9 KiB — 3 ms — h2https://assets.squarespace.com/universal/scripts-compressed/extract-css-runtime-1002a3e1f5867562-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/extract-css-runtime-1002a3e1f5867562-min.en-US.js — 200 — 19.0 KiB — 3 ms — h2https://assets.squarespace.com/universal/styles-compressed/commerce-7cb74f0a2a4a5c9c-min.en-US.cssassets.squarespace.com/universal/st... https://assets.squarespace.com/universal/styles-compressed/commerce-7cb74f0a2a4a5c9c-min.en-US.css — 200 — 2.1 KiB — 8 ms — h2https://assets.squarespace.com/universal/styles-compressed/user-account-core-4874ffbe0ac03dec-min.en-US.cssassets.squarespace.com/universal/st... https://assets.squarespace.com/universal/styles-compressed/user-account-core-4874ffbe0ac03dec-min.en-US.css — 200 — 897 B — 6 ms — h2https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.html/e151aa35-11aa-4a63-bd42-5a098dce6037_1055/website.components.html.styles.cssdefinitions.sqspcdn.com/website-com... https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.html/e151aa35-11aa-4a63-bd42-5a098dce6037_1055/website.components.html.styles.css — 200 — 571 B — 75 ms — h2https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.imageFluid/b68f4315-2190-4f75-b82c-7fecd49919c4_1042/website.components.imageFluid.styles.cssdefinitions.sqspcdn.com/website-com... https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.imageFluid/b68f4315-2190-4f75-b82c-7fecd49919c4_1042/website.components.imageFluid.styles.css — 200 — 672 B — 76 ms — h2https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.button/46e83260-d2aa-41dd-b7c7-d83fb61f6780_1225/website.components.button.styles.cssdefinitions.sqspcdn.com/website-com... https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.button/46e83260-d2aa-41dd-b7c7-d83fb61f6780_1225/website.components.button.styles.css — 200 — 503 B — 75 ms — h2https://static1.squarespace.com/static/versioned-site-css/66b0311b7faba9099b253553/45/5c5a519771c10ba3470d8101/66b0311b7faba9099b25355b/1851/site.css?nocustom=truestatic1.squarespace.com/static/vers... https://static1.squarespace.com/static/versioned-site-css/66b0311b7faba9099b253553/45/5c5a519771c10ba3470d8101/66b0311b7faba9099b25355b/1851/site.css?nocustom=true — 200 — 110.3 KiB — 65 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/versioned-assets/1793303477445-MV4SEJ2ESJHA5E89L1J2/static.cssstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/versioned-assets/1793303477445-MV4SEJ2ESJHA5E89L1J2/static.css — 200 — 41.4 KiB — 63 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/51ca3e26-9bf1-44df-acb2-1cfa71e4124a/_H0A1063.JPG?format=1500wimages.squarespace-cdn.com/content/... 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— http/1.1https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/56652912-1eef-49b6-bc5e-f3f75d805a6d/new-MercedesBlanche4831-Edit.jpg?format=1500wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/56652912-1eef-49b6-bc5e-f3f75d805a6d/new-MercedesBlanche4831-Edit.jpg?format=1500w — 200 — 233.2 KiB — 13 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/cb5b41c6-9c43-4e95-9056-24649aaa8211/new-MercedesBlanche0028-Edit.jpg?format=750wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/cb5b41c6-9c43-4e95-9056-24649aaa8211/new-MercedesBlanche0028-Edit.jpg?format=750w — 200 — 88.5 KiB — 13 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/e90daf61-60ff-42de-882a-127d2cf49bfa/Screenshot+2025-05-24+at+12-39-48+Mercedes+Blanche.png?format=750wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/e90daf61-60ff-42de-882a-127d2cf49bfa/Screenshot+2025-05-24+at+12-39-48+Mercedes+Blanche.png?format=750w — 200 — 483.1 KiB — 23 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/de3f7563-ba79-4feb-a9ef-d6f1fc29d578/unnamed.jpg?format=500wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/de3f7563-ba79-4feb-a9ef-d6f1fc29d578/unnamed.jpg?format=500w — 200 — 19.2 KiB — 13 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/9214.6730a36ef02c933f0e6a.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/9214.6730a36ef02c933f0e6a.js — 200 — 13.9 KiB — 5 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/section-divider.b3a21411477bb441a60d.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/section-divider.b3a21411477bb441a60d.js — 200 — 3.3 KiB — 6 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/8706.9f9354c132882253b6ae.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/8706.9f9354c132882253b6ae.js — 200 — 14.4 KiB — 4 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/1546.be889fc991476fb1ab17.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/1546.be889fc991476fb1ab17.js — 200 — 2.9 KiB — 4 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/background-image-fx-parallax.b7056bcfa3e123f9123c.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/background-image-fx-parallax.b7056bcfa3e123f9123c.js — 200 — 3.1 KiB — 4 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/gallery-grid.d2d95c6f405bc48880fb.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/gallery-grid.d2d95c6f405bc48880fb.js — 200 — 2.8 KiB — 4 ms — h2https://assets.squarespace.com/universal/scripts-compressed/init-animation-triggers-e9dc59652796fa0e-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/init-animation-triggers-e9dc59652796fa0e-min.en-US.js — 200 — 668 B — 2 ms — h2https://assets.squarespace.com/universal/scripts-compressed/18788-37aece4cef74a9e3-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/18788-37aece4cef74a9e3-min.en-US.js — 200 — 24.8 KiB — 8 ms — h2https://assets.squarespace.com/universal/scripts-compressed/47646-277e985202158cd6-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/47646-277e985202158cd6-min.en-US.js — 200 — 6.3 KiB — 4 ms — h2https://assets.squarespace.com/universal/scripts-compressed/16854-aef4e43395511c69-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/16854-aef4e43395511c69-min.en-US.js — 200 — 3.1 KiB — 7 ms — h2https://assets.squarespace.com/universal/scripts-compressed/84210-3c81a99351d79cf0-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/84210-3c81a99351d79cf0-min.en-US.js — 200 — 2.0 KiB — 7 ms — h2https://assets.squarespace.com/universal/scripts-compressed/18816-da8bce443c3103e4-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/18816-da8bce443c3103e4-min.en-US.js — 200 — 4.2 KiB — 9 ms — h2https://assets.squarespace.com/universal/scripts-compressed/31319-32976a4fb1f28000-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/31319-32976a4fb1f28000-min.en-US.js — 200 — 2.1 KiB — 9 ms — h2https://assets.squarespace.com/universal/scripts-compressed/2249-18044299d1e24389-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/2249-18044299d1e24389-min.en-US.js — 200 — 4.6 KiB — 15 ms — h2https://assets.squarespace.com/universal/scripts-compressed/49997-e531971af0a22c35-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/49997-e531971af0a22c35-min.en-US.js — 200 — 6.7 KiB — 12 ms — h2https://assets.squarespace.com/universal/styles-compressed/5b8f4cabb3fb1481-min.en-US.cssassets.squarespace.com/universal/st... https://assets.squarespace.com/universal/styles-compressed/5b8f4cabb3fb1481-min.en-US.css — 200 — 3.5 KiB — 4 ms — h2https://assets.squarespace.com/universal/scripts-compressed/async-commerce-cart-utils-3caee65082086b19-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/async-commerce-cart-utils-3caee65082086b19-min.en-US.js — 200 — 3.0 KiB — 12 ms — h2https://assets.squarespace.com/universal/styles-compressed/d92bd0f161fc0505-min.en-US.cssassets.squarespace.com/universal/st... https://assets.squarespace.com/universal/styles-compressed/d92bd0f161fc0505-min.en-US.css — 200 — 1.6 KiB — 4 ms — h2https://assets.squarespace.com/universal/scripts-compressed/async-reserved-cart-bootstrap-f3f7da83f1978019-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/async-reserved-cart-bootstrap-f3f7da83f1978019-min.en-US.js — 200 — 1.5 KiB — 12 ms — h2https://www.mercedes-blanche.com/api/census/render-batch/api/census/render-batch https://www.mercedes-blanche.com/api/census/render-batch — 200 — 110 B — 298 ms — h2https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/floating-cart.7a42160a86f0c10b740c.jsstatic1.squarespace.com/static/vta/... https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/floating-cart.7a42160a86f0c10b740c.js — 200 — 559 B — 2 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/6f0d3bd6-7260-47ec-8223-256e58bb12f1/Screenshot+2025-05-24+at+12-41-21+Mercedes+Blanche.png?format=500wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/6f0d3bd6-7260-47ec-8223-256e58bb12f1/Screenshot+2025-05-24+at+12-41-21+Mercedes+Blanche.png?format=500w — 200 — 153.8 KiB — 11 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/2a02b2dd-c0d3-4873-81e1-e2428decd94d/new-MercedesBlanche4580-Edit.jpg?format=500wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/2a02b2dd-c0d3-4873-81e1-e2428decd94d/new-MercedesBlanche4580-Edit.jpg?format=500w — 200 — 64.2 KiB — 6 ms — h2https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/24628025-e94a-4d01-a12f-29d1d53fca3f/new-MercedesBlanche0347-Edit.jpg?format=500wimages.squarespace-cdn.com/content/... https://images.squarespace-cdn.com/content/v1/66b0311b7faba9099b253553/24628025-e94a-4d01-a12f-29d1d53fca3f/new-MercedesBlanche0347-Edit.jpg?format=500w — 200 — 39.0 KiB — 4 ms — h2https://assets.squarespace.com/universal/scripts-compressed/trigger-animation-runtime-8f26fbc93278e734-min.en-US.jsassets.squarespace.com/universal/sc... https://assets.squarespace.com/universal/scripts-compressed/trigger-animation-runtime-8f26fbc93278e734-min.en-US.js — 200 — 17.8 KiB — 3 ms — h2https://assets.squarespace.com/universal/default-favicon.icoassets.squarespace.com/universal/de... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
78% of JavaScript execution is third-party
First-party Third-party 2846ms · 879KB · $16/mo
assets.squarespace.com
Other
Costly
Execution 1399ms
Transfer 255 KB
Unused 61%
Monthly Cost $8/mo
static1.squarespace.com
Other
Costly
Execution 682ms
Transfer 14 KB
Monthly Cost $4/mo
static1.squarespace.com
Other
Costly
Execution 293ms
Transfer 39 KB
Monthly Cost $2/mo
assets.squarespace.com
Other
Optional
Execution 121ms
Transfer 186 KB
Unused 83%
Monthly Cost $1/mo
assets.squarespace.com
Other
Optional
Execution 89ms
Transfer 18 KB
Monthly Cost $1/mo
assets.squarespace.com
Other
Optional
Execution 88ms
Transfer 33 KB
Unused 66%
Monthly Cost $0/mo
assets.squarespace.com
Other
Optional
Execution 69ms
Transfer 44 KB
Unused 98%
Monthly Cost $0/mo
assets.squarespace.com
Other
Optional
Execution 55ms
Transfer 180 KB
Unused 37%
Monthly Cost $0/mo
static1.squarespace.com
Other
Optional
Execution 52ms
Transfer 110 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • assets.squarespace.com adds 1399ms and costs ~$8/month
  • static1.squarespace.com adds 682ms and costs ~$4/month
  • static1.squarespace.com adds 293ms and costs ~$2/month

78% 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

assets.squarespace.com takes 1399ms 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

61% of assets.squarespace.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

static1.squarespace.com takes 682ms 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

static1.squarespace.com takes 293ms 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

83% of assets.squarespace.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

66% of assets.squarespace.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

98% of assets.squarespace.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

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-10-14 — 2026-11-10)

LCP (p75)

3662 ms

46% good

INP (p75)

0 ms

0% good

CLS (p75)

0.060

97% good

FCP (p75)

1551 ms

TTFB (p75)

653 ms

Image Optimization
9 images, 204 KB total, 70 KB wasted
INFO

Image Optimization Audit

Total Images

9

Total Size

204 KB

Oversized

1

Wasted

70 KB

1 missing lazy loading
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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