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
Image Optimization
Action
85 images, 0 KB saveable
REVIEW
85 images, 0 KB saveable
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01clzba61Pi... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN018R1AKX21v... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01fUkHqg1iY... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01O2L5Uq26x... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN0105rDyH1oQ... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01eM4mUt22q... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01c8sMkQ1d9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01rQhAt925N... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01MXYbir1cn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN015zeYu41Qt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN010o2SwJ1PA... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01OFWNjm1bs... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01pfTwUd1oU... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://privacy-policy.truste.com/privacy-seal/sea... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01tF0TPd21W... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01OaobNJ1YN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01CF3pCf1qF... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://privacy-policy.truste.com/privacy-seal/sea... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN018ZYP7z1Ri... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01Iet5oN1fL... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01xQ9oJD1lo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01FmBnXS1fN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01M2F6cu25P... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01w8ds5E1ns... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01bYc1m81Rr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01mBlmbJ1Od... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01ZYdHYu1mo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01YjfgWI1w2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01YuYoVp20L... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01ShWc3C1W1... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01KMyvUS1df... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN014dBjIj1pN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01fga8xn1e7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01nLNLmY1Vt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01o1uRkw1ZE... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01HeC9oP28U... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01HWNg6K1to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01VEYwv61tv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i2/O1CN01ovdv0A26w... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01MzSU641q5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i3/O1CN01KAo9ck26P... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i1/O1CN01f6uz8d1zT... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://img.alicdn.com/imgextra/i4/O1CN01yNBFZK1Go... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
85images1.1 MB
0oversized-0 KB
18legacy format
43missing dimensionsCLS 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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
6 fonts (145 KB)
PASS
6 fonts (145 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
145 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
oMMgfZMQthOryQo9n22dcuv...woff2swap
Size10 KB
Load time87 ms
Start2.7 s
RiskFOUT — text flashes from fallback to web font
font_263210_j0iclb5xrye...woff2swap
Size9 KB
Load time106 ms
Start2.7 s
RiskFOUT — text flashes from fallback to web font
KFOlCnqEu92Fr1MmEU9fBBc...woff2swap
Size11 KB
Load time61 ms
Start2.7 s
RiskFOUT — text flashes from fallback to web font
Hgo13k-tfSpn0qi1SFdUfZB...woff2swap
Size11 KB
Load time36 ms
Start2.7 s
RiskFOUT — text flashes from fallback to web font
d-6IYplOFocCacKzxwXSOFt...woff2swap
Size15 KB
Load time30 ms
Start2.7 s
RiskFOUT — text flashes from fallback to web font
getttfswap
Size89 KB
Load time10 ms
Start4.2 s
RiskFOUT — 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 ~27 KB and ~54 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
14 hints, 0 missing preconnects
PASS
14 hints, 0 missing preconnects
Info::
✓
Page uses 14 resource hint(s)
Current Resource Hints
preconnect
4
preload
5
dns-prefetch
5
prefetch—
14 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
Network Waterfall
201 requests over 7655ms
INFO
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-party17652ms · 3496KB · ¥871/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
g.alicdn.com
g.alicdn.com
Other
4524ms
1352 KB
59%
¥223/mo
Costly
www.alibabacloud.com
www.alibabacloud.com
Other
2538ms
24 KB
—
¥125/mo
Costly
Unattributable
Unattributable
Other
1873ms
0 KB
—
¥92/mo
Costly
g.alicdn.com
g.alicdn.com
Other
1626ms
1005 KB
57%
¥80/mo
Costly
website.alcasset.com
website.alcasset.com
Other
928ms
160 KB
55%
¥46/mo
Costly
g.alicdn.com
g.alicdn.com
Other
869ms
109 KB
—
¥43/mo
Costly
g.alicdn.com
g.alicdn.com
Other
688ms
63 KB
39%
¥34/mo
Costly
g.alicdn.com
g.alicdn.com
Other
499ms
6 KB
—
¥25/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
464ms
145 KB
38%
¥23/mo
Costly
consent.trustarc.com
consent.trustarc.com
Other
456ms
14 KB
—
¥22/mo
Costly
website.alcasset.com
website.alcasset.com
Other
382ms
28 KB
—
¥19/mo
Costly
g.alicdn.com
g.alicdn.com
Other
356ms
78 KB
49%
¥18/mo
Costly
cloud-assets.alicdn.com
cloud-assets.alicdn.com
Other
341ms
117 KB
56%
¥17/mo
Costly
website.alcasset.com
website.alcasset.com
Other
303ms
11 KB
—
¥15/mo
Costly
website.alcasset.com
website.alcasset.com
Other
246ms
0 KB
64%
¥12/mo
Costly
g.alicdn.com
g.alicdn.com
Other
240ms
31 KB
—
¥12/mo
Costly
laz-g-cdn.alicdn.com
laz-g-cdn.alicdn.com
Other
193ms
17 KB
—
¥10/mo
Optional
accounts.google.com
accounts.google.com
Other
164ms
96 KB
74%
¥8/mo
Optional
consent.trustarc.com
consent.trustarc.com
Other
137ms
36 KB
57%
¥7/mo
Optional
assets.alicdn.com
assets.alicdn.com
Other
132ms
6 KB
—
¥7/mo
Optional
website.alcasset.com
website.alcasset.com
Other
128ms
40 KB
—
¥6/mo
Optional
LinkedIn Insight
snap.licdn.com
Advertising
127ms
19 KB
—
¥6/mo
Optional
g.alicdn.com
g.alicdn.com
Other
120ms
40 KB
55%
¥6/mo
Optional
cloud-assets.alicdn.com
cloud-assets.alicdn.com
Other
96ms
18 KB
—
¥5/mo
Optional
g.alicdn.com
g.alicdn.com
Other
93ms
7 KB
—
¥5/mo
Optional
g.alicdn.com
g.alicdn.com
Other
78ms
49 KB
66%
¥4/mo
Optional
helps.live
helps.live
Other
51ms
24 KB
—
¥3/mo
Optional
g.alicdn.com
Other
Costly
Execution4524ms
Transfer1352 KB
Unused59%
Monthly Cost¥223/mo
www.alibabacloud.com
Other
Costly
Execution2538ms
Transfer24 KB
Monthly Cost¥125/mo
Unattributable
Other
Costly
Execution1873ms
Transfer0 KB
Monthly Cost¥92/mo
g.alicdn.com
Other
Costly
Execution1626ms
Transfer1005 KB
Unused57%
Monthly Cost¥80/mo
website.alcasset.com
Other
Costly
Execution928ms
Transfer160 KB
Unused55%
Monthly Cost¥46/mo
g.alicdn.com
Other
Costly
Execution869ms
Transfer109 KB
Monthly Cost¥43/mo
g.alicdn.com
Other
Costly
Execution688ms
Transfer63 KB
Unused39%
Monthly Cost¥34/mo
g.alicdn.com
Other
Costly
Execution499ms
Transfer6 KB
Monthly Cost¥25/mo
Google Tag Manager
Tag Manager
Costly
Execution464ms
Transfer145 KB
Unused38%
Monthly Cost¥23/mo
consent.trustarc.com
Other
Costly
Execution456ms
Transfer14 KB
Monthly Cost¥22/mo
website.alcasset.com
Other
Costly
Execution382ms
Transfer28 KB
Monthly Cost¥19/mo
g.alicdn.com
Other
Costly
Execution356ms
Transfer78 KB
Unused49%
Monthly Cost¥18/mo
cloud-assets.alicdn.com
Other
Costly
Execution341ms
Transfer117 KB
Unused56%
Monthly Cost¥17/mo
website.alcasset.com
Other
Costly
Execution303ms
Transfer11 KB
Monthly Cost¥15/mo
website.alcasset.com
Other
Costly
Execution246ms
Transfer0 KB
Unused64%
Monthly Cost¥12/mo
g.alicdn.com
Other
Costly
Execution240ms
Transfer31 KB
Monthly Cost¥12/mo
laz-g-cdn.alicdn.com
Other
Optional
Execution193ms
Transfer17 KB
Monthly Cost¥10/mo
accounts.google.com
Other
Optional
Execution164ms
Transfer96 KB
Unused74%
Monthly Cost¥8/mo
consent.trustarc.com
Other
Optional
Execution137ms
Transfer36 KB
Unused57%
Monthly Cost¥7/mo
assets.alicdn.com
Other
Optional
Execution132ms
Transfer6 KB
Monthly Cost¥7/mo
website.alcasset.com
Other
Optional
Execution128ms
Transfer40 KB
Monthly Cost¥6/mo
LinkedIn Insight
Advertising
Optional
Execution127ms
Transfer19 KB
Monthly Cost¥6/mo
g.alicdn.com
Other
Optional
Execution120ms
Transfer40 KB
Unused55%
Monthly Cost¥6/mo
cloud-assets.alicdn.com
Other
Optional
Execution96ms
Transfer18 KB
Monthly Cost¥5/mo
g.alicdn.com
Other
Optional
Execution93ms
Transfer7 KB
Monthly Cost¥5/mo
g.alicdn.com
Other
Optional
Execution78ms
Transfer49 KB
Unused66%
Monthly Cost¥4/mo
helps.live
Other
Optional
Execution51ms
Transfer24 KB
Monthly Cost¥3/mo
These scripts may cost more than they're worth
g.alicdn.com adds 4524ms and costs ~¥223/month
www.alibabacloud.com adds 2538ms and costs ~¥125/month
Unattributable adds 1873ms and costs ~¥92/month
g.alicdn.com adds 1626ms and costs ~¥80/month
website.alcasset.com adds 928ms and costs ~¥46/month
g.alicdn.com adds 869ms and costs ~¥43/month
g.alicdn.com adds 688ms and costs ~¥34/month
g.alicdn.com adds 499ms and costs ~¥25/month
Google Tag Manager adds 464ms and costs ~¥23/month
consent.trustarc.com adds 456ms and costs ~¥22/month
website.alcasset.com adds 382ms and costs ~¥19/month
g.alicdn.com adds 356ms and costs ~¥18/month
cloud-assets.alicdn.com adds 341ms and costs ~¥17/month
website.alcasset.com adds 303ms and costs ~¥15/month
website.alcasset.com adds 246ms and costs ~¥12/month
g.alicdn.com adds 240ms and costs ~¥12/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
g.alicdn.com takes 4524ms 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 g.alicdn.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.alibabacloud.com takes 2538ms 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 1873ms 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
g.alicdn.com takes 1626ms 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
57% of g.alicdn.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
website.alcasset.com takes 928ms 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
55% of website.alcasset.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
g.alicdn.com takes 869ms 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
g.alicdn.com takes 688ms 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
g.alicdn.com takes 499ms 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 464ms 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
consent.trustarc.com takes 456ms 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
website.alcasset.com takes 382ms 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
g.alicdn.com takes 356ms 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
cloud-assets.alicdn.com takes 341ms 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 cloud-assets.alicdn.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
website.alcasset.com takes 303ms 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
website.alcasset.com takes 246ms 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
64% of website.alcasset.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
g.alicdn.com takes 240ms 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
74% of accounts.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
57% of consent.trustarc.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
55% of g.alicdn.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
66% of g.alicdn.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.
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