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https://www.temu.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
5
REVIEW
0
PASS
9
INFO
2

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

Mobile Desktop
30
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
69
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.

7.93 s

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

15.53 s

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

1.97 s

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.

7.98 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.

16.44 s

Page Load Progression

829 ms
1.7 s
2.5 s
3.3 s
4.1 s
5.0 s
5.8 s
6.6 s
Checks
16
9 PASS 5 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 173 requests
FIX
2.3 MB transferred, 173 requests
Info::
Page weighs 7.0 MB (2.3 MB transferred)
Warning::
JavaScript is 1.7 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.7 MB
Warning::
173 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.49 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
173 requests
0.49 g CO2 per page load
JavaScript 1.7 MiB 74%
Other 216.2 KiB 9%
HTML 150.5 KiB 6%
CSS 137.4 KiB 6%
Other 61.2 KiB 3%
Images 34.2 KiB 1%
Other 10.9 KiB 0%
Other 4.1 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
91% third-party, 0 ms blocking
FIX
91% third-party, 0 ms blocking
Warning::
Third-party code accounts for 91% of page weight (2.1 MiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
91%
First-party Third-party
F
JS Execution Cost
Action
11556ms total JS execution
FIX
11556ms total JS execution
Warning::
https://static.kwcdn.com/m-assets/assets/js/2322_4...: 2999ms CPU time
Warning::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 2303ms CPU time
Warning::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 1791ms CPU time
Warning::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 1153ms CPU time
Warning::
https://www.temu.com/: 1086ms CPU time
Warning::
Third-party scripts: 10326ms (89% of total)

Main Thread Breakdown

Script Evaluation 74% Other 11% Style & Layout 7% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://static.kwcdn.com/m-assets/assets/js/2322_48cbc9a6111a76977588.js2999ms2843ms34ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/5748_f7a26f57f93cd433d24f.js2303ms2148ms28ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/vendors_299eef7a8e30f1dddbb3.js1791ms1525ms28ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/index_fed_temp_498ea946e026f1ef1635.js1153ms880ms155ms3rd
https://www.temu.com/1086ms125ms62ms1st
https://static.kwcdn.com/m-assets/assets/js/vendors_6b4021e09299ffc9e7c0.js988ms892ms42ms3rd
Unattributable829ms38ms0ms3rd
https://www.temu.com/bgn_verification.html?verifyCode=X7kFwIlYzsec6AiYSwmPgg6ac9be01042aa43bf&from=https%3A%2F%2Fwww.temu.com%2F&type=iframe&iframeMsgId=tw3qz8m5dwd1qotaxvzsu144ms54ms28ms1st
https://static.kwcdn.com/m-assets/assets/modernjs/223_30e5c0bec3e2c708cb62.js114ms97ms11ms3rd
https://static.kwcdn.com/m-assets/assets/js/biz_vendors_501c218b7e6bee478795.js81ms20ms53ms3rd

Showing top 10 of 11 scripts

F
JS Bundles
Action
34 scripts, 799 KB unused
FIX
34 scripts, 799 KB unused
Warning::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 347 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/js/biz_ve...: 94 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/js/vendor...: 90 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 51 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/js/535_84...: 46 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 799 KB
799 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.kwcdn.com/m-assets/assets/modernjs/index_fed_temp_498ea946e026f1ef1635.js579 KB347 KB (60%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/biz_vendors_501c218b7e6bee478795.js167 KB94 KB (56%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/vendors_6b4021e09299ffc9e7c0.js194 KB90 KB (46%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/top_tap_personal_page_717a49442c8b463b49c5.js70 KB51 KB (73%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/535_8424a38e2ae3c1ed9230.js68 KB46 KB (68%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/vendors_299eef7a8e30f1dddbb3.js116 KB44 KB (38%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/2322_48cbc9a6111a76977588.js158 KB26 KB (17%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/RecommendGoods_28b01ed59a1dcb9c7b3b.js32 KB26 KB (82%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/5748_f7a26f57f93cd433d24f.js158 KB26 KB (17%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/dynamic-CategoryGoods_802083b68efcba5af656.js26 KB26 KB (99%)✓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: no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
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
21 images, 0 KB saveable
PASS
21 images, 0 KB saveable
Info::
All images are well-optimized
21 images 34 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
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
173 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
89% of JavaScript execution is third-party
First-party Third-party 10326ms · 1473KB · $137/mo
static.kwcdn.com
Other
Costly
Execution 2999ms
Transfer 158 KB
Unused 17%
Monthly Cost $40/mo
static.kwcdn.com
Other
Costly
Execution 2303ms
Transfer 158 KB
Unused 17%
Monthly Cost $31/mo
static.kwcdn.com
Other
Costly
Execution 1791ms
Transfer 116 KB
Unused 38%
Monthly Cost $24/mo
static.kwcdn.com
Other
Costly
Execution 1153ms
Transfer 579 KB
Unused 60%
Monthly Cost $15/mo
static.kwcdn.com
Other
Costly
Execution 988ms
Transfer 194 KB
Unused 46%
Monthly Cost $13/mo
Unattributable
Other
Costly
Execution 829ms
Transfer 0 KB
Monthly Cost $11/mo
static.kwcdn.com
Other
Optional
Execution 114ms
Transfer 32 KB
Monthly Cost $2/mo
static.kwcdn.com
Other
Optional
Execution 81ms
Transfer 167 KB
Unused 56%
Monthly Cost $1/mo
static.kwcdn.com
Other
Optional
Execution 68ms
Transfer 70 KB
Unused 73%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • static.kwcdn.com adds 2999ms and costs ~$40/month
  • static.kwcdn.com adds 2303ms and costs ~$31/month
  • static.kwcdn.com adds 1791ms and costs ~$24/month
  • static.kwcdn.com adds 1153ms and costs ~$15/month
  • static.kwcdn.com adds 988ms and costs ~$13/month
  • Unattributable adds 829ms and costs ~$11/month

89% 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

static.kwcdn.com takes 2999ms 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

static.kwcdn.com takes 2303ms 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

static.kwcdn.com takes 1791ms 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

static.kwcdn.com takes 1153ms 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

60% of static.kwcdn.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

static.kwcdn.com takes 988ms 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 829ms 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 static.kwcdn.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

73% of static.kwcdn.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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