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https://merchantcircle.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
3
REVIEW
5
PASS
7
INFO
2

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

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
72
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.

4.01 s

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

5.45 s

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

153 ms

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

0.001

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

4.91 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.

10.63 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
17
7 PASS 5 REVIEW 3 FIX
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 (1.8 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
49 resources · 1.8 MB · 197 KB savings available
FIX
49 resources · 1.8 MB · 197 KB savings available
Warning::
Page weight 811 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Info::
~197 KB of savings available
Warning::
48 third-party resources (100% of weight)
49 resources · 1.8 MiB · 48 third-party 811.1 KiB over 1MB target
Image 61% · 1.1 MiB
JavaScript 28% · 515.6 KiB
Document 6% · 118.0 KiB
Font 3% · 63.5 KiB
CSS 1% · 12.1 KiB
Other 0% · 2.0 KiB

~196.7 KiB of savings available

Remove unused JavaScript: 196.7 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.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
1.8 MB transferred, 49 requests
REVIEW
1.8 MB transferred, 49 requests
Info::
Page weighs 3.2 MB (1.8 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 516 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 516 KB
Info::
49 HTTP requests
Info::
Estimated 0.38 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
49 requests
0.38 g CO2 per page load
Images 1.1 MiB 61%
JavaScript 515.6 KiB 28%
HTML 117.9 KiB 6%
Fonts 63.5 KiB 3%
CSS 12.1 KiB 1%
Other 4.9 KiB 0%
Other 1.5 KiB 0%
Other 554 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

B
Image Optimization
24 images, 0 KB saveable
REVIEW
24 images, 0 KB saveable
Warning::
https://static3.merchantcircle.com/static/v3/img/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
24 images 1.1 MB
0 oversized -0 KB
24 legacy format
1 missing dimensions CLS risk

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

C
JS Execution Cost
Action
1223ms total JS execution
REVIEW
1223ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-WX4C...: 314ms CPU time
Warning::
Unattributable: 256ms CPU time
Warning::
https://www.merchantcircle.com/: 255ms CPU time
Info::
https://script.hotjar.com/modules.6a0f3932cb1341a3...: 131ms CPU time
Info::
https://platform.twitter.com/widgets.js: 95ms CPU time
Warning::
Third-party scripts: 1223ms (100% of total)

Main Thread Breakdown

Script Evaluation 52% Other 20% Style & Layout 13% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-WX4CDQBS4M314ms229ms41ms3rd
Unattributable256ms6ms0ms3rd
https://www.merchantcircle.com/255ms65ms7ms3rd
https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js131ms105ms24ms3rd
https://platform.twitter.com/widgets.js95ms79ms7ms3rd
https://connect.facebook.net/en_US/bundle/sdk.js/66ms47ms18ms3rd
https://apis.google.com/_/scs/abc-static/_/js/k=gapi.lb.en.HLcjcliCxoY.O/m=plusone/rt=j/sv=1/d=1/ed=1/rs=AHpOoo-EKlLcELGvY6Qdg_kTBmN3Ra8MLw/cb=gapi.loaded_0?le=scs54ms41ms12ms3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js52ms33ms6ms3rd
C
JS Bundles
Action
14 scripts, 197 KB unused
REVIEW
14 scripts, 197 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-WX4C...: 69 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/bundle/sdk.js/: 54 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://script.hotjar.com/modules.6a0f3932cb1341a3...: 38 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://apis.google.com/_/scs/abc-static/_/js/k=ga...: 36 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 197 KB
197 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-WX4CDQBS4M176 KB69 KB (39%)✓3rd
https://connect.facebook.net/en_US/bundle/sdk.js/78 KB54 KB (69%)✓3rd
https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js57 KB38 KB (67%)✓3rd
https://apis.google.com/_/scs/abc-static/_/js/k=gapi.lb.en.HLcjcliCxoY.O/m=plusone/rt=j/sv=1/d=1/ed=1/rs=AHpOoo-EKlLcELGvY6Qdg_kTBmN3Ra8MLw/cb=gapi.loaded_0?le=scs54 KB36 KB (67%)✓3rd
https://static4.merchantcircle.com/static/v2/js/mc.min.js?v=7f4185a09e14 KB—✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js33 KB—✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js0 KB—✓3rd
https://static3.merchantcircle.com/static/v2/js/jquery.autocomplete.min.js?v=dd9ddd711e5 KB—✓3rd
https://static.hotjar.com/c/hotjar-5227174.js?sv=66 KB—✓3rd
https://apis.google.com/js/plusone.js24 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

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+
Font Loading
2 fonts (63 KB)
PASS
2 fonts (63 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

63 KB total

Render-blocking

0

of 2

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 4.0 s 5.0 s FCP 4.0 s LCP 5.5 shttps://static1.merchantcircle.com/static/v3/fonts/icomoon/icomoon.ttf?hash=6wp13micomoon.ttf https://static1.merchantcircle.com/static/v3/fonts/icomoon/icomoon.ttf?hash=6wp13m — 26.8 KiB — 10 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 67 ms — font-display: swap
icomoon.ttf ttf swap
Size 27 KB
Load time 10 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 67 ms
Start 1.6 s
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)

Fixing the unchecked items could save ~8 KB and ~16 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
Network Waterfall
49 requests over 1985ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 4.0 s LCP 5.5 shttps://merchantcircle.com// https://merchantcircle.com/ — 301 — 90 B — 495 ms — h2https://www.merchantcircle.com/www.merchantcircle.com/ https://www.merchantcircle.com/ — 200 — 14.6 KiB — 666 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — -1 — 0 B — 60 ms — https://static1.merchantcircle.com/static/v3/css/rd-mc-home-page.css?v=cdef659770static1.merchantcircle.com/static/v... https://static1.merchantcircle.com/static/v3/css/rd-mc-home-page.css?v=cdef659770 — 200 — 9.8 KiB — 95 ms — h2https://static3.merchantcircle.com/static/v3/img/logos/logo-header.svg?v=593341ef07static3.merchantcircle.com/static/v... https://static3.merchantcircle.com/static/v3/img/logos/logo-header.svg?v=593341ef07 — 200 — 14.9 KiB — 81 ms — h2https://media.merchantcircle.com/677324/MerchantCircle%20-%20Profile_medium.pngmedia.merchantcircle.com/677324/Mer... https://media.merchantcircle.com/677324/MerchantCircle%20-%20Profile_medium.png — 200 — 50.3 KiB — 71 ms — h2https://media.merchantcircle.com/26740788/FutureFLM_Logo_medium.pngmedia.merchantcircle.com/26740788/F... https://media.merchantcircle.com/26740788/FutureFLM_Logo_medium.png — 200 — 39.5 KiB — 4 ms — h2https://media.merchantcircle.com/22616510/ew%20logo_full.gifmedia.merchantcircle.com/22616510/e... https://media.merchantcircle.com/22616510/ew%20logo_full.gif — 200 — 9.6 KiB — 4 ms — h2https://media.merchantcircle.com/39601232/1476113285.15-75bac4f9d84085f2d1f8766d431b4bf4_medium.jpegmedia.merchantcircle.com/39601232/1... https://media.merchantcircle.com/39601232/1476113285.15-75bac4f9d84085f2d1f8766d431b4bf4_medium.jpeg — 200 — 5.2 KiB — 3 ms — h2https://media.merchantcircle.com/17691661/1745074206.29-de16fab6f3508377bee40b18a9509c51_full.jpegmedia.merchantcircle.com/17691661/1... https://media.merchantcircle.com/17691661/1745074206.29-de16fab6f3508377bee40b18a9509c51_full.jpeg — 200 — 4.5 KiB — 3 ms — h2https://media.merchantcircle.com/6031330/1470410489.13-daf13aa9c5cb7c8aee7a7a0161a12ecd_medium.pngmedia.merchantcircle.com/6031330/14... https://media.merchantcircle.com/6031330/1470410489.13-daf13aa9c5cb7c8aee7a7a0161a12ecd_medium.png — 200 — 14.2 KiB — 5 ms — h2https://media.merchantcircle.com/upics/3/1092109/drain%20system%20in%20the%20modern%20glass%20door%20shower_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092109/drain%20system%20in%20the%20modern%20glass%20door%20shower_full.jpeg — 200 — 67.8 KiB — 12 ms — h2https://media.merchantcircle.com/upics/3/1092108/heating%20and%20cooling%20system_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092108/heating%20and%20cooling%20system_full.jpeg — 200 — 68.3 KiB — 17 ms — h2https://media.merchantcircle.com/upics/3/1092107/flames%20and%20sparks%20coming%20out%20of%20wires1_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092107/flames%20and%20sparks%20coming%20out%20of%20wires1_full.jpeg — 200 — 71.4 KiB — 19 ms — h2https://media.merchantcircle.com/upics/3/1092106/luxury%20kitchen_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092106/luxury%20kitchen_full.jpeg — 200 — 85.5 KiB — 20 ms — h2https://media.merchantcircle.com/upics/3/1092105/interior%20door_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092105/interior%20door_full.jpeg — 200 — 49.3 KiB — 23 ms — h2https://media.merchantcircle.com/upics/3/1092104/sunroom%20ideas_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092104/sunroom%20ideas_full.jpeg — 200 — 140.2 KiB — 21 ms — h2https://media.merchantcircle.com/upics/3/1092103/metal%20roofing_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092103/metal%20roofing_full.jpeg — 200 — 152.2 KiB — 25 ms — h2https://static3.merchantcircle.com/static/v3/img/footer-img-mob.png?v=8bf04a33cestatic3.merchantcircle.com/static/v... https://static3.merchantcircle.com/static/v3/img/footer-img-mob.png?v=8bf04a33ce — 200 — 97.3 KiB — 15 ms — h2https://static4.merchantcircle.com/static/v3/img/footer-img.png?v=c9b244ddc0static4.merchantcircle.com/static/v... https://static4.merchantcircle.com/static/v3/img/footer-img.png?v=c9b244ddc0 — 200 — 157.0 KiB — 95 ms — h2https://static4.merchantcircle.com/static/v3/img/socials/fb-social.svg?v=1508a2702fstatic4.merchantcircle.com/static/v... https://static4.merchantcircle.com/static/v3/img/socials/fb-social.svg?v=1508a2702f — 200 — 880 B — 98 ms — h2https://static4.merchantcircle.com/static/v3/img/socials/twitter-social.svg?v=d66a60c2c9static4.merchantcircle.com/static/v... https://static4.merchantcircle.com/static/v3/img/socials/twitter-social.svg?v=d66a60c2c9 — 200 — 1.2 KiB — 94 ms — h2https://static4.merchantcircle.com/static/v3/img/socials/linkedin-social.svg?v=14ca839947static4.merchantcircle.com/static/v... https://static4.merchantcircle.com/static/v3/img/socials/linkedin-social.svg?v=14ca839947 — 200 — 1.4 KiB — 95 ms — h2https://ssl.google-analytics.com/ga.jsssl.google-analytics.com/ga.js https://ssl.google-analytics.com/ga.js — 200 — 17.4 KiB — 127 ms — h2https://www.googletagmanager.com/gtag/js?id=G-WX4CDQBS4Mwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-WX4CDQBS4M — 200 — 175.6 KiB — 211 ms — h2https://cdn.mouseflow.com/projects/cb78eb8a-1ee7-4e41-8424-98f67df90608.jscdn.mouseflow.com/projects/cb78eb8a... https://cdn.mouseflow.com/projects/cb78eb8a-1ee7-4e41-8424-98f67df90608.js — 200 — 18.1 KiB — 106 ms — h3https://static.hotjar.com/c/hotjar-5227174.js?sv=6static.hotjar.com/c/hotjar-5227174.... https://static.hotjar.com/c/hotjar-5227174.js?sv=6 — 200 — 6.2 KiB — 142 ms — h2https://static1.merchantcircle.com/static/v3/img/home-hero/home-hero-bg-march-mob.jpgstatic1.merchantcircle.com/static/v... https://static1.merchantcircle.com/static/v3/img/home-hero/home-hero-bg-march-mob.jpg — 200 — 87.2 KiB — 13 ms — h2https://static1.merchantcircle.com/static/v3/fonts/icomoon/icomoon.ttf?hash=6wp13mstatic1.merchantcircle.com/static/v... https://static1.merchantcircle.com/static/v3/fonts/icomoon/icomoon.ttf?hash=6wp13m — 200 — 26.8 KiB — 10 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js — 200 — 32.8 KiB — 145 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 4.0 s LCP 5.5 shttps://merchantcircle.com// https://merchantcircle.com/ — 301 — 90 B — 495 ms — h2https://www.merchantcircle.com/www.merchantcircle.com/ https://www.merchantcircle.com/ — 200 — 14.6 KiB — 666 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — -1 — 0 B — 60 ms — https://static1.merchantcircle.com/static/v3/css/rd-mc-home-page.css?v=cdef659770static1.merchantcircle.com/static/v... https://static1.merchantcircle.com/static/v3/css/rd-mc-home-page.css?v=cdef659770 — 200 — 9.8 KiB — 95 ms — h2https://static3.merchantcircle.com/static/v3/img/logos/logo-header.svg?v=593341ef07static3.merchantcircle.com/static/v... https://static3.merchantcircle.com/static/v3/img/logos/logo-header.svg?v=593341ef07 — 200 — 14.9 KiB — 81 ms — h2https://media.merchantcircle.com/677324/MerchantCircle%20-%20Profile_medium.pngmedia.merchantcircle.com/677324/Mer... https://media.merchantcircle.com/677324/MerchantCircle%20-%20Profile_medium.png — 200 — 50.3 KiB — 71 ms — h2https://media.merchantcircle.com/26740788/FutureFLM_Logo_medium.pngmedia.merchantcircle.com/26740788/F... https://media.merchantcircle.com/26740788/FutureFLM_Logo_medium.png — 200 — 39.5 KiB — 4 ms — h2https://media.merchantcircle.com/22616510/ew%20logo_full.gifmedia.merchantcircle.com/22616510/e... https://media.merchantcircle.com/22616510/ew%20logo_full.gif — 200 — 9.6 KiB — 4 ms — h2https://media.merchantcircle.com/39601232/1476113285.15-75bac4f9d84085f2d1f8766d431b4bf4_medium.jpegmedia.merchantcircle.com/39601232/1... https://media.merchantcircle.com/39601232/1476113285.15-75bac4f9d84085f2d1f8766d431b4bf4_medium.jpeg — 200 — 5.2 KiB — 3 ms — h2https://media.merchantcircle.com/17691661/1745074206.29-de16fab6f3508377bee40b18a9509c51_full.jpegmedia.merchantcircle.com/17691661/1... https://media.merchantcircle.com/17691661/1745074206.29-de16fab6f3508377bee40b18a9509c51_full.jpeg — 200 — 4.5 KiB — 3 ms — h2https://media.merchantcircle.com/6031330/1470410489.13-daf13aa9c5cb7c8aee7a7a0161a12ecd_medium.pngmedia.merchantcircle.com/6031330/14... https://media.merchantcircle.com/6031330/1470410489.13-daf13aa9c5cb7c8aee7a7a0161a12ecd_medium.png — 200 — 14.2 KiB — 5 ms — h2https://media.merchantcircle.com/upics/3/1092109/drain%20system%20in%20the%20modern%20glass%20door%20shower_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092109/drain%20system%20in%20the%20modern%20glass%20door%20shower_full.jpeg — 200 — 67.8 KiB — 12 ms — h2https://media.merchantcircle.com/upics/3/1092108/heating%20and%20cooling%20system_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092108/heating%20and%20cooling%20system_full.jpeg — 200 — 68.3 KiB — 17 ms — h2https://media.merchantcircle.com/upics/3/1092107/flames%20and%20sparks%20coming%20out%20of%20wires1_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092107/flames%20and%20sparks%20coming%20out%20of%20wires1_full.jpeg — 200 — 71.4 KiB — 19 ms — h2https://media.merchantcircle.com/upics/3/1092106/luxury%20kitchen_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092106/luxury%20kitchen_full.jpeg — 200 — 85.5 KiB — 20 ms — h2https://media.merchantcircle.com/upics/3/1092105/interior%20door_full.jpegmedia.merchantcircle.com/upics/3/10... https://media.merchantcircle.com/upics/3/1092105/interior%20door_full.jpeg — 200 — 49.3 KiB — 23 ms — h2https://media.merchantcircle.com/upics/3/1092104/sunroom%20ideas_full.jpegmedia.merchantcircle.com/upics/3/10... 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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
100% of JavaScript execution is third-party
First-party Third-party 1223ms · 440KB · €13/mo
Google Tag Manager
Tag Manager
Costly
Execution 314ms
Transfer 176 KB
Unused 39%
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 256ms
Transfer 0 KB
Monthly Cost €3/mo
www.merchantcircle.com
Other
Costly
Execution 255ms
Transfer 15 KB
Monthly Cost €3/mo
Hotjar
Session Replay
Optional
Execution 131ms
Transfer 57 KB
Unused 67%
Monthly Cost €1/mo
Twitter/X Embed
Social
Optional
Execution 95ms
Transfer 27 KB
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 66ms
Transfer 78 KB
Unused 69%
Monthly Cost €1/mo
apis.google.com
Other
Optional
Execution 54ms
Transfer 54 KB
Unused 67%
Monthly Cost €1/mo
ajax.googleapis.com
Other
Optional
Execution 52ms
Transfer 33 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 314ms and costs ~€3/month
  • Unattributable adds 256ms and costs ~€3/month
  • www.merchantcircle.com adds 255ms and costs ~€3/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

Google Tag Manager 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

Unattributable takes 256ms 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.merchantcircle.com takes 255ms 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 Hotjar'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

69% of Facebook Pixel'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

67% of apis.google.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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