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https://shopeemobile.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
76
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.

2.21 s

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

2.31 s

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

42 ms

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

0.000

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

2.21 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.

3.05 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
15
9 PASS 2 REVIEW 2 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 (563.1 KiB of 563.2 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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
JS Bundles
Action
4 scripts, 160 KB unused
REVIEW
4 scripts, 160 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-QNNE...: 64 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WJZ...: 51 KB unused (27%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 44 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 160 KB
160 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-QNNETX0FQ1&cx=c&gtm=4e64f0152 KB64 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WJZQSJF190 KB51 KB (27%)✓3rd
https://connect.facebook.net/en_US/fbevents.js96 KB44 KB (46%)✓3rd
https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/js/index.4b3c4e88.js1 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
563 KB transferred, 29 requests
PASS
563 KB transferred, 29 requests
Info::
Page weighs 1.8 MB (563 KB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
563 KB / 2.4 MB budget
563 KB transferred
29 requests
0.12 g CO2 per page load
JavaScript 439.9 KiB 78%
Images 57.9 KiB 10%
CSS 32.8 KiB 6%
Fonts 21.5 KiB 4%
HTML 7.9 KiB 1%
Other 2.0 KiB 0%
Other 566 B 0%
Other 554 B 0%
0 2.4 MB 4.9 MB
Under budget
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
5 images, 0 KB saveable
PASS
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 58 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
250ms total JS execution
PASS
250ms total JS execution
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-WJZ...: 138ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-QNNE...: 61ms CPU time
Info::
https://shopee.com/: 50ms CPU time
Warning::
Third-party scripts: 250ms (100% of total)

Main Thread Breakdown

Script Evaluation 60% Other 14% Script Parsing & Compilation 12% Style & Layout 11%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtm.js?id=GTM-WJZQSJF138ms116ms18ms3rd
https://www.googletagmanager.com/gtag/js?id=G-QNNETX0FQ1&cx=c&gtm=4e64f061ms48ms12ms3rd
https://shopee.com/50ms2ms1ms3rd
A+
Font Loading
2 fonts (22 KB)
PASS
2 fonts (22 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

22 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 500 ms 1.0 s 1.5 s 2.0 s FCP 2.2 s LCP 2.3 shttps://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-medium.68ab4917.woff2roboto-medium.68ab4917.... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-medium.68ab4917.woff2 — 10.8 KiB — 11 ms — font-display: swaphttps://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-regular.276cdb9e.woff2roboto-regular.276cdb9e... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-regular.276cdb9e.woff2 — 10.7 KiB — 8 ms — font-display: swap
roboto-medium.68ab4917.... woff2 swap
Size 11 KB
Load time 11 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
roboto-regular.276cdb9e... woff2 swap
Size 11 KB
Load time 8 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)
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
Page Weight Inventory
29 resources · 563 KB · 160 KB savings available
PASS
29 resources · 563 KB · 160 KB savings available
Info::
Within 1MB page-weight target
Got: 563 KB
Info::
~160 KB of savings available
Warning::
28 third-party resources (100% of weight)
29 resources · 563.2 KiB · 28 third-party Within 1MB page-weight target
JavaScript 78% · 439.9 KiB
Image 11% · 59.8 KiB
CSS 6% · 32.8 KiB
Font 4% · 21.5 KiB
Document 1% · 8.0 KiB
Other 0% · 1.1 KiB

~159.9 KiB of savings available

Remove unused JavaScript: 159.9 KiB
Network Waterfall
29 requests over 2257ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 2.2 s LCP 2.3 shttps://shopeemobile.com// https://shopeemobile.com/ — 307 — 99 B — 766 ms — h2https://shopee.com/shopee.com/ https://shopee.com/ — 200 — 7.9 KiB — 784 ms — h2https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/js/index.4b3c4e88.jsdeo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/js/index.4b3c4e88.js — 200 — 1.1 KiB — 17 ms — h2https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/js/index.37d69f29.cssdeo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/js/index.37d69f29.css — 200 — 32.8 KiB — 16 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-WJZQSJFwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-WJZQSJF — 200 — 190.1 KiB — 255 ms — h2data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHN2ZyB3aWR0aD0iMTAyN…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHN2ZyB3aWR0aD0iMTAyN… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHN2ZyB3aWR0aD0iMTAyN…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHN2ZyB3aWR0aD0iMTAyN… — 200 — 0 B — 0 ms — datahttps://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/img/banner.b02ffc3a.pngdeo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/img/banner.b02ffc3a.png — 200 — 46.5 KiB — 4 ms — h2data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datahttps://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/c3e8b0d9c5ac504a.svgdeo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/c3e8b0d9c5ac504a.svg — 200 — 11.0 KiB — 4 ms — h2data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib…data:image/svg+xml;base64,PHN2ZyB3a... data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOTYiIGhlaWdodD0iOTYiIHZpZXdCb3g9IjAgMCA5NiA5NiIgZmlsbD0ib… — 200 — 0 B — 0 ms — datahttps://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-medium.68ab4917.woff2deo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-medium.68ab4917.woff2 — 200 — 10.8 KiB — 11 ms — h2https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-regular.276cdb9e.woff2deo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/static/font/roboto-regular.276cdb9e.woff2 — 200 — 10.7 KiB — 8 ms — h2https://www.googletagmanager.com/gtag/js?id=G-QNNETX0FQ1&cx=c&gtm=4e64f0www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-QNNETX0FQ1&cx=c&gtm=4e64f0 — 200 — 152.3 KiB — 97 ms — h2https://connect.facebook.net/en_US/fbevents.jsconnect.facebook.net/en_US/fbevents... https://connect.facebook.net/en_US/fbevents.js — 200 — 96.4 KiB — 101 ms — h3https://www.google.com/ccm/collect?rcb=18&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fshopee.com%2F&scrsrc=www.googletagmanager.com&rnd=565411327.1776363575&dt=Leading%20Online%20Shopping%20Platform%20In%20Southeast%20Asia%20%26%20Taiwan%20%7C%20Shopee&auid=920921834.1776363575&navt=n&npa=1&ep.ads_data_redaction=0&gtm=45He64f0v77691473za200zd77691473xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115938466~115938468~117266400~118128923&apve=1&apvf=f&apvc=1&tft=1776363574891&tfd=1955www.google.com/ccm/collect?rcb=18&f... https://www.google.com/ccm/collect?rcb=18&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fshopee.com%2F&scrsrc=www.googletagmanager.com&rnd=565411327.1776363575&dt=Leading%20Online%20Shopping%20Platform%20In%20Southeast%20Asia%20%26%20Taiwan%20%7C%20Shopee&auid=920921834.1776363575&navt=n&npa=1&ep.ads_data_redaction=0&gtm=45He64f0v77691473za200zd77691473xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115938466~115938468~117266400~118128923&apve=1&apvf=f&apvc=1&tft=1776363574891&tfd=1955 — 200 — 21 B — 63 ms — h3https://region1.analytics.google.com/g/collect?v=2&tid=G-QNNETX0FQ1&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&_p=1776363574505&_gaz=1&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&_eu=AAAAAGA&are=1&cid=1193702380.1776363575&frm=0&pscdl=noapi&rcb=17&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.55%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~117266401~118131810&sid=1776363575&sct=1&seg=0&dl=https%3A%2F%2Fshopee.com%2F&dt=Leading%20Online%20Shopping%20Platform%20In%20Southeast%20Asia%20%26%20Taiwan%20%7C%20Shopee&en=page_view&_fv=1&_nsi=1&_ss=1&ep.useAmpClientId=true&ep.location=https%3A%2F%2Fshopee.com%2F&ep.ai_overview_text=undefined&tfd=2088region1.analytics.google.com/g/coll... https://region1.analytics.google.com/g/collect?v=2&tid=G-QNNETX0FQ1&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&_p=1776363574505&_gaz=1&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&_eu=AAAAAGA&are=1&cid=1193702380.1776363575&frm=0&pscdl=noapi&rcb=17&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.55%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~117266401~118131810&sid=1776363575&sct=1&seg=0&dl=https%3A%2F%2Fshopee.com%2F&dt=Leading%20Online%20Shopping%20Platform%20In%20Southeast%20Asia%20%26%20Taiwan%20%7C%20Shopee&en=page_view&_fv=1&_nsi=1&_ss=1&ep.useAmpClientId=true&ep.location=https%3A%2F%2Fshopee.com%2F&ep.ai_overview_text=undefined&tfd=2088 — 204 — 545 B — 76 ms — h2https://stats.g.doubleclick.net/g/collect?v=2&tid=G-QNNETX0FQ1&cid=1193702380.1776363575&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&rcb=17&aip=1&dma=1&dma_cps=a&gcd=13l3lPl2l1l1&npa=1&frm=0&tag_exp=0~115938466~115938469~117266401~118131810stats.g.doubleclick.net/g/collect?v... https://stats.g.doubleclick.net/g/collect?v=2&tid=G-QNNETX0FQ1&cid=1193702380.1776363575&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&rcb=17&aip=1&dma=1&dma_cps=a&gcd=13l3lPl2l1l1&npa=1&frm=0&tag_exp=0~115938466~115938469~117266401~118131810 — 204 — 554 B — 96 ms — h2https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-QNNETX0FQ1&cid=1193702380.1776363575&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&rcb=17&aip=1&dma=1&dma_cps=a&gcd=13l3lPl2l1l1&npa=1&frm=0&tag_exp=0~115938466~115938469~117266401~118131810&z=523279441www.google.es/ads/ga-audiences?v=1&... https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-QNNETX0FQ1&cid=1193702380.1776363575&gtm=45je64f0v893834207z877691473za20gzb77691473zd77691473&rcb=17&aip=1&dma=1&dma_cps=a&gcd=13l3lPl2l1l1&npa=1&frm=0&tag_exp=0~115938466~115938469~117266401~118131810&z=523279441 — 200 — 408 B — 148 ms — h2https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/favicon.icodeo.shopeemobile.com/shopee/shopee-... https://deo.shopeemobile.com/shopee/shopee-shopeecom-live-sg/favicon.ico — 200 — 1.9 KiB — 4 ms — h2
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 250ms · 350KB · S$4/mo
Google Tag Manager
Tag Manager
Optional
Execution 138ms
Transfer 190 KB
Unused 27%
Monthly Cost S$2/mo
Google Tag Manager
Tag Manager
Optional
Execution 61ms
Transfer 152 KB
Unused 42%
Monthly Cost S$1/mo
shopee.com
Other
Optional
Execution 50ms
Transfer 8 KB
Monthly Cost S$1/mo

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

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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