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https://www.temu.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
4
REVIEW
1
PASS
7
INFO
2

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

Mobile Desktop
65
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
45
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.

1.48 s

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

3.00 s

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

282 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.

1.62 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.

3.39 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
14
7 PASS 1 REVIEW 4 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 129 requests
FIX
2.2 MB transferred, 129 requests
Info::
Page weighs 7.1 MB (2.2 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::
129 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.46 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
129 requests
0.46 g CO2 per page load
JavaScript 1.7 MiB 80%
Other 145.5 KiB 7%
CSS 130.0 KiB 6%
HTML 114.5 KiB 5%
Other 42.3 KiB 2%
Other 4.5 KiB 0%
Other 2.1 KiB 0%
Other 439 B 0%
Images 0 B 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
88% third-party, 0 ms blocking
FIX
88% third-party, 0 ms blocking
Warning::
Third-party code accounts for 88% of page weight (1.9 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
88%
First-party Third-party
D
JS Execution Cost
Action
2015ms total JS execution
FIX
2015ms total JS execution
Warning::
https://static.kwcdn.com/m-assets/assets/js/2322_4...: 796ms CPU time
Warning::
https://static.kwcdn.com/m-assets/assets/js/vendor...: 299ms CPU time
Info::
Unattributable: 248ms CPU time
Info::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 219ms CPU time
Info::
https://static.kwcdn.com/m-assets/assets/modernjs/...: 138ms CPU time
Warning::
Third-party scripts: 1834ms (91% of total)

Main Thread Breakdown

Script Evaluation 71% Other 14% Script Parsing & Compilation 7% Style & Layout 4%
ScriptTotalScriptingParse/CompileParty
https://static.kwcdn.com/m-assets/assets/js/2322_48cbc9a6111a76977588.js796ms752ms8ms3rd
https://static.kwcdn.com/m-assets/assets/js/vendors_6b4021e09299ffc9e7c0.js299ms266ms11ms3rd
Unattributable248ms6ms0ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_5c4cf967ba066fc6.js219ms164ms51ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/vendors_d101f0eb8c2086c0.js138ms84ms20ms3rd
https://www.temu.com/bgn_verification.html?verifyCode=jy6fS33YBCHgz49yeuCGKQ2beb2173350c97b90&from=https%3A%2F%2Fwww.temu.com%2F&refer_page_name=home&refer_page_id=10005_1776002785001_rtzl1fnpn3&refer_page_sn=10005&_x_sessn_id=98t6maqjpm130ms33ms10ms1st
https://static.kwcdn.com/m-assets/assets/modernjs/6496_169eba253e6ddbb80126.js72ms70ms0ms3rd
https://static.kwcdn.com/m-assets/assets/modernjs/9508_0bb0b29e98fd2403560c.js61ms52ms8ms3rd
https://www.temu.com/51ms23ms12ms1st
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
C
JS Bundles
Action
31 scripts, 269 KB unused
REVIEW
31 scripts, 269 KB unused
Warning::
https://static.kwcdn.com/m-assets/assets/js/biz_ve...: 88 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/js/vendor...: 86 KB unused (44%)
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.
Warning::
https://static.kwcdn.com/m-assets/assets/js/2322_4...: 27 KB unused (17%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.kwcdn.com/m-assets/assets/js/vfd_3f...: 23 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 269 KB
269 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.kwcdn.com/m-assets/assets/js/biz_vendors_501c218b7e6bee478795.js167 KB88 KB (53%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/vendors_6b4021e09299ffc9e7c0.js194 KB86 KB (44%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/535_8424a38e2ae3c1ed9230.js68 KB46 KB (68%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/2322_48cbc9a6111a76977588.js158 KB27 KB (17%)✓3rd
https://static.kwcdn.com/m-assets/assets/js/vfd_3f0082bb00ca8bd6759f.js29 KB23 KB (78%)✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/830_22621fff2adf13a1567f.js37 KB—✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/2966_4701859d97533aaa5424.js10 KB—✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/react_webpack_runtime_5740fdb7cbd14db5.js12 KB—✓3rd
https://static.kwcdn.com/m-assets/assets/modernjs/w/index_fed_temp_5540be4df6f6dab4aaaa.js1 KB—✓3rd
https://static.kwcdn.com/dll/assets/js/funWebWidgets/2.4.55.js7 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Warning::
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAUAA... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
4 images 0 KB
0 oversized -0 KB
0 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

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+
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
129 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
91% of JavaScript execution is third-party
First-party Third-party 1834ms · 1411KB · $24/mo
static.kwcdn.com
Other
Costly
Execution 796ms
Transfer 158 KB
Unused 17%
Monthly Cost $11/mo
static.kwcdn.com
Other
Costly
Execution 299ms
Transfer 194 KB
Unused 44%
Monthly Cost $4/mo
Unattributable
Other
Costly
Execution 248ms
Transfer 0 KB
Monthly Cost $3/mo
static.kwcdn.com
Other
Costly
Execution 219ms
Transfer 642 KB
Monthly Cost $3/mo
static.kwcdn.com
Other
Optional
Execution 138ms
Transfer 252 KB
Monthly Cost $2/mo
static.kwcdn.com
Other
Optional
Execution 72ms
Transfer 11 KB
Monthly Cost $1/mo
static.kwcdn.com
Other
Optional
Execution 61ms
Transfer 154 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • static.kwcdn.com adds 796ms and costs ~$11/month
  • static.kwcdn.com adds 299ms and costs ~$4/month
  • Unattributable adds 248ms and costs ~$3/month
  • static.kwcdn.com adds 219ms and costs ~$3/month

91% 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 796ms 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 299ms 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 248ms 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 219ms 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

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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