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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
5
REVIEW
1
PASS
8
INFO
2

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

Mobile Desktop
21
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.
85
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.

13.44 s

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

28.39 s

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

13.26 s

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

0.116

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

18.03 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.

56.10 s

Page Load Progression

1.4 s
2.8 s
4.2 s
5.6 s
7.0 s
8.4 s
9.7 s
11.1 s
Checks
16
8 PASS 1 REVIEW 5 FIX
F
Page Weight Budget
Action
8.5 MB transferred, 615 requests
FIX
8.5 MB transferred, 615 requests
Critical::
Page weighs 23.2 MB (8.5 MB transferred)
Warning::
JavaScript is 4.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 4.6 MB
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Info::
Fonts are 838 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 838 KB
Warning::
615 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.8 g CO2 per page load
8.5 MB / 2.4 MB budget
8.5 MB transferred
615 requests
1.8 g CO2 per page load
JavaScript 4.6 MiB 54%
Images 1.3 MiB 15%
Other 1.3 MiB 15%
Fonts 837.6 KiB 10%
Other 246.1 KiB 3%
HTML 170.8 KiB 2%
CSS 105.7 KiB 1%
Other 30.6 KiB 0%
Other 13.0 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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

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 (8.5 MiB of 8.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
47605ms total JS execution
FIX
47605ms total JS execution
Warning::
https://www.redditstatic.com/ads/pixel.js?pixel_id...: 15327ms CPU time
Warning::
https://www.stevemadden.com/: 6554ms CPU time
Warning::
Unattributable: 4662ms CPU time
Warning::
https://www.stevemadden.com/cdn/wpm/b0e8c7c7aw41bd...: 4023ms CPU time
Warning::
https://sgtm.stevemadden.com/gtm.js?id=GTM-MPLJCX2: 2495ms CPU time
Warning::
Third-party scripts: 47605ms (100% of total)

Main Thread Breakdown

Script Evaluation 69% Other 13% Style & Layout 9% Rendering 4% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.redditstatic.com/ads/pixel.js?pixel_id=a2_ilsofmugd5j915327ms15025ms6ms3rd
https://www.stevemadden.com/6554ms534ms90ms3rd
Unattributable4662ms406ms0ms3rd
https://www.stevemadden.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js4023ms2447ms18ms3rd
https://sgtm.stevemadden.com/gtm.js?id=GTM-MPLJCX22495ms2249ms185ms3rd
https://vice-prod.sdiapi.com/vice_loader/stevemadden/stevemadden1667ms1314ms22ms3rd
https://staticw2.yotpo.com/Z1ia318TQD3H8cgES4O27MG5V4gPgT9PRiUZPs9P/widget.js?shop=stevemadden.myshopify.com&v2enforce=true933ms413ms62ms3rd
https://sgtm.stevemadden.com/gtag/js?id=DC-9201747&cx=c&gtm=4e6461&sign=c6b5b76de8e045899a9a166920c9da87e5428e061e7adc4123bd2e97ef367ba7_20260408818ms719ms37ms3rd
https://mpsnare.iesnare.com/general5/wdp.js?loaderVer=5.1.0&compat=false&tp=true&tp_split=false&fp_static=false&fp_dyn=true&flash=false727ms688ms8ms3rd
https://cdn.shopify.com/extensions/019d4e1d-40d9-7f98-9bf4-614ed7f2fe1a/narvar-test-app-208/assets/shipping-protection-cart-widget.js649ms381ms41ms3rd

Showing top 10 of 59 scripts

F
JS Bundles
Action
297 scripts, 1.4 MB unused
FIX
297 scripts, 1.4 MB unused
Warning::
https://cdnapisec.kaltura.com/p/2527131/embedPlayk...: 277 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.luckylabs.io/prd/store-locator/org/ind...: 108 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.luckylabs.io/prd/lucky-local/org/built...: 94 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://js.squarecdn.com/square-marketplace.js: 81 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://staticw2.yotpo.com/Z1ia318TQD3H8cgES4O27MG...: 72 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.4 MB
1436 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdnapisec.kaltura.com/p/2527131/embedPlaykitJs/uiconf_id/43953791409 KB277 KB (68%)✓3rd
https://cdn.luckylabs.io/prd/store-locator/org/index.js157 KB108 KB (69%)✓3rd
https://cdn.luckylabs.io/prd/lucky-local/org/built-sources/index.js176 KB94 KB (53%)✓3rd
https://js.squarecdn.com/square-marketplace.js138 KB81 KB (59%)✓3rd
https://staticw2.yotpo.com/Z1ia318TQD3H8cgES4O27MG5V4gPgT9PRiUZPs9P/widget.js?shop=stevemadden.myshopify.com&v2enforce=true106 KB72 KB (68%)✓3rd
https://sgtm.stevemadden.com/gtag/js?id=G-ZFX8CW65MJ&cx=c&gtm=4e6461&sign=c6b5b76de8e045899a9a166920c9da87e5428e061e7adc4123bd2e97ef367ba7_20260408158 KB62 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-YX1WM4PD60&cx=c&gtm=4e6461&sign=c6b5b76de8e045899a9a166920c9da87e5428e061e7adc4123bd2e97ef367ba7_20260408143 KB60 KB (42%)✓3rd
https://sgtm.stevemadden.com/gtag/js?id=DC-9201747&cx=c&gtm=4e6461&sign=c6b5b76de8e045899a9a166920c9da87e5428e061e7adc4123bd2e97ef367ba7_20260408128 KB59 KB (46%)✓3rd
https://sgtm.stevemadden.com/gtag/js?id=AW-1058467247&cx=c&gtm=4e6461&sign=c6b5b76de8e045899a9a166920c9da87e5428e061e7adc4123bd2e97ef367ba7_20260408145 KB49 KB (34%)✓3rd
https://sgtm.stevemadden.com/gtm.js?id=GTM-MPLJCX2201 KB48 KB (24%)✓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, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, no-store

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
no-store—Never cache this response
C
Image Optimization
Action
73 images, 0 KB saveable
REVIEW
73 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.contentstack.io/v3/assets/blt563c80... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/2170/8465/files/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.contentstack.io/v3/assets/blt563c80... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
73 images 1.3 MB
0 oversized -0 KB
51 legacy format
4 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

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
13 fonts (838 KB)
PASS
13 fonts (838 KB)
Info::
13 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

13

838 KB total

Render-blocking

0

of 13

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 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s FCP 13.4 s LCP 28.4 shttps://www.dolcevita.com/cdn/shop/files/arimo-regular-webfont.woff2?v=9302334437808075133arimo-regular-webfont.w... https://www.dolcevita.com/cdn/shop/files/arimo-regular-webfont.woff2?v=9302334437808075133 — 19.0 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/c4767b/00000000000000003b9acb20/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/c4767b/00000000000000003b9acb20/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 24.4 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/6d4bb2/00000000000000003b9acafc/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/6d4bb2/00000000000000003b9acafc/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 26.0 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/027dd4/00000000000000003b9acafa/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n6&v=3l https://use.typekit.net/af/027dd4/00000000000000003b9acafa/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n6&v=3 — 26.3 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/be1794/00000000000000003b9acb45/27/l?subset_id=2&fvd=n7&v=3l https://use.typekit.net/af/be1794/00000000000000003b9acb45/27/l?subset_id=2&fvd=n7&v=3 — 18.6 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/aa5b59/00000000000000003b9acaf7/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3l https://use.typekit.net/af/aa5b59/00000000000000003b9acaf7/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3 — 27.6 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/46da36/00000000000000003b9acaf6/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/46da36/00000000000000003b9acaf6/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 26.4 KiB — 0 ms — font-display: swaphttps://cdn.shopify.com/s/files/1/2170/8465/files/AcuminVariableConcept.otf?v=1772048764AcuminVariableConcept.otf https://cdn.shopify.com/s/files/1/2170/8465/files/AcuminVariableConcept.otf?v=1772048764 — 496.0 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/f2b2eb/00000000000000003b9acb1a/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/f2b2eb/00000000000000003b9acb1a/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 25.0 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/1e205b/00000000000000003b9acb24/27/l?subset_id=2&fvd=n9&v=3l https://use.typekit.net/af/1e205b/00000000000000003b9acb24/27/l?subset_id=2&fvd=n9&v=3 — 17.3 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 — 63.1 KiB — 0 ms — font-display: swaphttps://staticw2.yotpo.com/web-fonts/opensans/v34/open-sans-v34-vietnamese_latin-ext_latin_hebrew_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2open-sans-v34-vietnames... https://staticw2.yotpo.com/web-fonts/opensans/v34/open-sans-v34-vietnamese_latin-ext_latin_hebrew_greek-ext_greek_cyrillic-ext_cyrillic-regular.woff2 — 55.5 KiB — 0 ms — font-display: swaphttps://staticw2.yotpo.com/assets/yotpo-widget-font.woff?version=2025-04-01_13-42-39yotpo-widget-font.woff https://staticw2.yotpo.com/assets/yotpo-widget-font.woff?version=2025-04-01_13-42-39 — 12.4 KiB — 0 ms — font-display: swap
arimo-regular-webfont.w... woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
AcuminVariableConcept.otf otf swap
Size 496 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
l woff2 swap
Size 25 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 17 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
open-sans-v34-vietnames... woff2 swap
Size 55 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
yotpo-widget-font.woff woff swap
Size 12 KB
Load time 0 ms
Start 0 ms
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)

Fixing the unchecked items could save ~400 KB and ~800 ms

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
23 hints, 0 missing preconnects
PASS
23 hints, 0 missing preconnects
Info::
Page uses 23 resource hint(s)

Current Resource Hints

preconnect
8
preload
3
dns-prefetch
5
prefetch
7

23 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
615 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 47605ms · 3308KB · €252/mo
www.redditstatic.com
Other
Costly
Execution 15327ms
Transfer 19 KB
Monthly Cost €81/mo
www.stevemadden.com
Other
Costly
Execution 6554ms
Transfer 139 KB
Monthly Cost €35/mo
Unattributable
Other
Costly
Execution 4662ms
Transfer 0 KB
Monthly Cost €25/mo
www.stevemadden.com
Other
Costly
Execution 4023ms
Transfer 61 KB
Unused 37%
Monthly Cost €21/mo
sgtm.stevemadden.com
Other
Costly
Execution 2495ms
Transfer 201 KB
Unused 24%
Monthly Cost €13/mo
vice-prod.sdiapi.com
Other
Costly
Execution 1667ms
Transfer 42 KB
Monthly Cost €9/mo
staticw2.yotpo.com
Other
Costly
Execution 933ms
Transfer 106 KB
Unused 68%
Monthly Cost €5/mo
sgtm.stevemadden.com
Other
Costly
Execution 818ms
Transfer 128 KB
Unused 46%
Monthly Cost €4/mo
mpsnare.iesnare.com
Other
Costly
Execution 727ms
Transfer 26 KB
Monthly Cost €4/mo
cdn.shopify.com
Other
Costly
Execution 649ms
Transfer 85 KB
Unused 49%
Monthly Cost €3/mo
www.stevemadden.com
Other
Costly
Execution 545ms
Transfer 30 KB
Monthly Cost €3/mo
brbez.stevemadden.com
Other
Costly
Execution 496ms
Transfer 48 KB
Unused 56%
Monthly Cost €3/mo
www.stevemadden.com
Other
Costly
Execution 495ms
Transfer 1 KB
Monthly Cost €3/mo
cdnapisec.kaltura.com
Other
Costly
Execution 473ms
Transfer 409 KB
Unused 68%
Monthly Cost €3/mo
cdn.shopify.com
Other
Costly
Execution 413ms
Transfer 74 KB
Unused 52%
Monthly Cost €2/mo
cdn.taboola.com
Other
Costly
Execution 385ms
Transfer 30 KB
Monthly Cost €2/mo
Microsoft Clarity
Session Replay
Costly
Execution 348ms
Transfer 26 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 340ms
Transfer 143 KB
Unused 42%
Monthly Cost €2/mo
unpkg
CDN
Costly
Execution 327ms
Transfer 3 KB
Monthly Cost €2/mo
tags.pw.adn.cloud
Other
Costly
Execution 314ms
Transfer 43 KB
Unused 58%
Monthly Cost €2/mo
www.stevemadden.com
Other
Costly
Execution 291ms
Transfer 15 KB
Monthly Cost €2/mo
beacon.riskified.com
Other
Costly
Execution 287ms
Transfer 17 KB
Monthly Cost €2/mo
assets.gorgias.chat
Other
Costly
Execution 279ms
Transfer 43 KB
Monthly Cost €1/mo
cdn.luckylabs.io
Other
Costly
Execution 270ms
Transfer 176 KB
Unused 53%
Monthly Cost €1/mo
js.squarecdn.com
Other
Costly
Execution 237ms
Transfer 138 KB
Unused 59%
Monthly Cost €1/mo
sgtm.stevemadden.com
Other
Costly
Execution 218ms
Transfer 158 KB
Unused 39%
Monthly Cost €1/mo
sgtm.stevemadden.com
Other
Costly
Execution 212ms
Transfer 145 KB
Unused 34%
Monthly Cost €1/mo
assets.gorgias.chat
Other
Optional
Execution 196ms
Transfer 38 KB
Unused 67%
Monthly Cost €1/mo
www.stevemadden.com
Other
Optional
Execution 193ms
Transfer 3 KB
Monthly Cost €1/mo
cdn.shoppinggives.com
Other
Optional
Execution 188ms
Transfer 73 KB
Unused 52%
Monthly Cost €1/mo
try.abtasty.com
Other
Optional
Execution 184ms
Transfer 48 KB
Monthly Cost €1/mo
cdn02.taggstar.com
Other
Optional
Execution 182ms
Transfer 6 KB
Monthly Cost €1/mo
www.stevemadden.com
Other
Optional
Execution 175ms
Transfer 28 KB
Monthly Cost €1/mo
cdn.shopify.com
Other
Optional
Execution 173ms
Transfer 49 KB
Unused 47%
Monthly Cost €1/mo
web-assets.stylitics.com
Other
Optional
Execution 171ms
Transfer 61 KB
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 159ms
Transfer 42 KB
Monthly Cost €1/mo
assets.gorgias.chat
Other
Optional
Execution 148ms
Transfer 93 KB
Unused 49%
Monthly Cost €1/mo
www.stevemadden.com
Other
Optional
Execution 144ms
Transfer 2 KB
Monthly Cost €1/mo
services.sdiapi.com
Other
Optional
Execution 140ms
Transfer 18 KB
Monthly Cost €1/mo
www.stevemadden.com
Other
Optional
Execution 140ms
Transfer 21 KB
Monthly Cost €1/mo
PayPal
Payment
Essential
Execution 136ms
Transfer 57 KB
Unused 63%
Monthly Cost €1/mo
static.shopmy.us
Other
Optional
Execution 134ms
Transfer 2 KB
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 131ms
Transfer 95 KB
Unused 34%
Monthly Cost €1/mo
try.abtasty.com
Other
Optional
Execution 125ms
Transfer 8 KB
Monthly Cost €1/mo
dx.mountain.com
Other
Optional
Execution 113ms
Transfer 7 KB
Monthly Cost €1/mo
services.sdiapi.com
Other
Optional
Execution 106ms
Transfer 2 KB
Monthly Cost €1/mo
cdn.shopify.com
Other
Optional
Execution 101ms
Transfer 7 KB
Monthly Cost €1/mo
web-assets.stylitics.com
Other
Optional
Execution 87ms
Transfer 59 KB
Unused 63%
Monthly Cost €0/mo
www.stevemadden.com
Other
Optional
Execution 80ms
Transfer 22 KB
Monthly Cost €0/mo
px.mountain.com
Other
Optional
Execution 79ms
Transfer 1 KB
Monthly Cost €0/mo
staticw2.yotpo.com
Other
Optional
Execution 70ms
Transfer 16 KB
Monthly Cost €0/mo
cdn.shopify.com
Other
Optional
Execution 67ms
Transfer 17 KB
Monthly Cost €0/mo
cdn.9gtb.com
Other
Optional
Execution 66ms
Transfer 60 KB
Unused 54%
Monthly Cost €0/mo
js.adsrvr.org
Other
Optional
Execution 62ms
Transfer 11 KB
Monthly Cost €0/mo
www.stevemadden.com
Other
Optional
Execution 57ms
Transfer 31 KB
Monthly Cost €0/mo
www.stevemadden.com
Other
Optional
Execution 57ms
Transfer 23 KB
Monthly Cost €0/mo
dx.mountain.com
Other
Optional
Execution 56ms
Transfer 7 KB
Monthly Cost €0/mo
Bing UET
Advertising
Optional
Execution 54ms
Transfer 15 KB
Monthly Cost €0/mo
www.stevemadden.com
Other
Optional
Execution 53ms
Transfer 74 KB
Unused 64%
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • www.redditstatic.com adds 15327ms and costs ~€81/month
  • www.stevemadden.com adds 6554ms and costs ~€35/month
  • Unattributable adds 4662ms and costs ~€25/month
  • www.stevemadden.com adds 4023ms and costs ~€21/month
  • sgtm.stevemadden.com adds 2495ms and costs ~€13/month
  • vice-prod.sdiapi.com adds 1667ms and costs ~€9/month
  • staticw2.yotpo.com adds 933ms and costs ~€5/month
  • sgtm.stevemadden.com adds 818ms and costs ~€4/month
  • mpsnare.iesnare.com adds 727ms and costs ~€4/month
  • cdn.shopify.com adds 649ms and costs ~€3/month
  • www.stevemadden.com adds 545ms and costs ~€3/month
  • brbez.stevemadden.com adds 496ms and costs ~€3/month
  • www.stevemadden.com adds 495ms and costs ~€3/month
  • cdnapisec.kaltura.com adds 473ms and costs ~€3/month
  • cdn.shopify.com adds 413ms and costs ~€2/month
  • cdn.taboola.com adds 385ms and costs ~€2/month
  • Microsoft Clarity adds 348ms and costs ~€2/month
  • Google Tag Manager adds 340ms and costs ~€2/month
  • unpkg adds 327ms and costs ~€2/month
  • tags.pw.adn.cloud adds 314ms and costs ~€2/month
  • www.stevemadden.com adds 291ms and costs ~€2/month
  • beacon.riskified.com adds 287ms and costs ~€2/month
  • assets.gorgias.chat adds 279ms and costs ~€1/month
  • cdn.luckylabs.io adds 270ms and costs ~€1/month
  • js.squarecdn.com adds 237ms and costs ~€1/month
  • sgtm.stevemadden.com adds 218ms and costs ~€1/month
  • sgtm.stevemadden.com adds 212ms and costs ~€1/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.redditstatic.com takes 15327ms 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.stevemadden.com takes 6554ms 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 4662ms 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.stevemadden.com takes 4023ms 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

sgtm.stevemadden.com takes 2495ms 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

vice-prod.sdiapi.com takes 1667ms 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

staticw2.yotpo.com takes 933ms 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

68% of staticw2.yotpo.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

sgtm.stevemadden.com takes 818ms 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

mpsnare.iesnare.com takes 727ms 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 649ms 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.stevemadden.com takes 545ms 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

brbez.stevemadden.com takes 496ms 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

56% of brbez.stevemadden.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

www.stevemadden.com takes 495ms 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

cdnapisec.kaltura.com takes 473ms 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

68% of cdnapisec.kaltura.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

cdn.shopify.com takes 413ms 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

52% 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

cdn.taboola.com takes 385ms 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

Microsoft Clarity takes 348ms 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 340ms 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

unpkg takes 327ms 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

tags.pw.adn.cloud takes 314ms 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

58% of tags.pw.adn.cloud'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

www.stevemadden.com takes 291ms 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

beacon.riskified.com takes 287ms 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

assets.gorgias.chat takes 279ms 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.luckylabs.io takes 270ms 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

53% of cdn.luckylabs.io'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

js.squarecdn.com takes 237ms 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

59% of js.squarecdn.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

sgtm.stevemadden.com takes 218ms 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

sgtm.stevemadden.com takes 212ms 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

67% of assets.gorgias.chat'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

52% of cdn.shoppinggives.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

63% of PayPal'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

63% of web-assets.stylitics.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

54% of cdn.9gtb.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

64% of www.stevemadden.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

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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