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https://alipay.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
5
PASS
7
INFO
2

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

Mobile Desktop
73
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
54
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
75
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.

1.97 s

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

2.41 s

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

25 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.

3.20 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.

2.41 s

Page Load Progression

533 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
15
7 PASS 5 REVIEW 1 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 (729.0 KiB of 729.5 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
B
Image Optimization
9 images, 0 KB saveable
REVIEW
9 images, 0 KB saveable
Warning::
https://img.alicdn.com/tfs/TB1DeJxnAY2gK0jSZFgXXc5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
9 images 88 KB
0 oversized -0 KB
3 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 Bundles
Action
10 scripts, 244 KB unused
REVIEW
10 scripts, 244 KB unused
Warning::
https://render-intl.alipayobjects.com/p/yuyan/1800...: 101 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gw.alipayobjects.com/render/p/yuyan/180020...: 101 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gw.alipayobjects.com/os/lib/jquery/3.7.1/d...: 21 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gw.alipayobjects.com/os/lib/moment/2.30.1/...: 20 KB unused (27%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 244 KB
244 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://render-intl.alipayobjects.com/p/yuyan/180020010001265696/main-dc280f4e.js153 KB101 KB (67%)✓3rd
https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.d499ff16.js219 KB101 KB (46%)✓3rd
https://gw.alipayobjects.com/os/lib/jquery/3.7.1/dist/jquery.min.js30 KB21 KB (72%)✓3rd
https://gw.alipayobjects.com/os/lib/moment/2.30.1/min/moment-with-locales.min.js75 KB20 KB (27%)✓3rd
https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/framework.292e2c8b.js51 KB—✓3rd
https://gw.alipayobjects.com/os/lib/dayjs/1.11.13/dayjs.min.js3 KB—✓3rd
https://gw.alipayobjects.com/os/lib/history/5.3.0/umd/history.production.min.js2 KB—✓3rd
https://gw.alipayobjects.com/os/lib/lodash/4.17.21/lodash.min.js26 KB—✓3rd
https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/lib-async.4f0c9598.js7 KB—✓3rd
https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/a10a3151-async.5c5c1a29.js10 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

B
Page Weight Inventory
30 resources · 729 KB · 244 KB savings available
REVIEW
30 resources · 729 KB · 244 KB savings available
Info::
Within 1MB page-weight target
Got: 729 KB
Info::
~244 KB of savings available
Warning::
29 third-party resources (100% of weight)
Info::
1 resources over 200KB
30 resources · 729.5 KiB · 29 third-party Within 1MB page-weight target
JavaScript 79% · 577.8 KiB
Image 18% · 134.8 KiB
Document 1% · 7.9 KiB
Other 1% · 5.1 KiB
CSS 1% · 3.9 KiB

~244.2 KiB of savings available

Remove unused JavaScript: 244.2 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0, s-maxage=120, must-revalidate
REVIEW
max-age=0, s-maxage=120, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, s-maxage=120, must-revalidate
Info::
CDN TTL: 2 minutes (s-maxage=120)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, s-maxage=120, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
s-maxage120CDN caches for 2 minutes
must-revalidate—Must recheck with server after expiry
A
Page Weight Budget
729 KB transferred, 30 requests
PASS
729 KB transferred, 30 requests
Info::
Page weighs 2.1 MB (729 KB transferred)
Warning::
JavaScript is 578 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 578 KB
Info::
30 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
729 KB / 2.4 MB budget
729 KB transferred
30 requests
0.15 g CO2 per page load
JavaScript 577.8 KiB 79%
Images 87.6 KiB 12%
Other 47.6 KiB 7%
HTML 7.4 KiB 1%
Other 4.6 KiB 1%
CSS 3.9 KiB 1%
Other 552 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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+
JS Execution Cost
179ms total JS execution
PASS
179ms total JS execution
Info::
https://gw.alipayobjects.com/render/p/yuyan/180020...: 116ms CPU time
Info::
Unattributable: 63ms CPU time
Warning::
Third-party scripts: 179ms (100% of total)

Main Thread Breakdown

Script Evaluation 56% Other 22% Script Parsing & Compilation 13% Style & Layout 7%
ScriptTotalScriptingParse/CompileParty
https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.d499ff16.js116ms101ms13ms3rd
Unattributable63ms5ms0ms3rd
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
Network Waterfall
30 requests over 4248ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.0 s LCP 2.4 shttps://alipay.com// https://alipay.com/ — 301 — 468 B — 784 ms — h2https://www.alipay.com/www.alipay.com/ https://www.alipay.com/ — 200 — 7.4 KiB — 75 ms — http/1.1https://render-intl.alipayobjects.com/p/yuyan/180020010001265696/main-dc280f4e.jsrender-intl.alipayobjects.com/p/yuy... https://render-intl.alipayobjects.com/p/yuyan/180020010001265696/main-dc280f4e.js — 200 — 152.9 KiB — 610 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.9734f39a.cssgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.9734f39a.css — 200 — 1.9 KiB — 335 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/framework.292e2c8b.jsgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/framework.292e2c8b.js — 200 — 51.4 KiB — 370 ms — h2https://gw.alipayobjects.com/os/lib/dayjs/1.11.13/dayjs.min.jsgw.alipayobjects.com/os/lib/dayjs/1... https://gw.alipayobjects.com/os/lib/dayjs/1.11.13/dayjs.min.js — 200 — 3.5 KiB — 371 ms — h2https://gw.alipayobjects.com/os/lib/history/5.3.0/umd/history.production.min.jsgw.alipayobjects.com/os/lib/history... https://gw.alipayobjects.com/os/lib/history/5.3.0/umd/history.production.min.js — 200 — 2.5 KiB — 404 ms — h2https://gw.alipayobjects.com/os/lib/jquery/3.7.1/dist/jquery.min.jsgw.alipayobjects.com/os/lib/jquery/... https://gw.alipayobjects.com/os/lib/jquery/3.7.1/dist/jquery.min.js — 200 — 30.1 KiB — 375 ms — h2https://gw.alipayobjects.com/os/lib/lodash/4.17.21/lodash.min.jsgw.alipayobjects.com/os/lib/lodash/... https://gw.alipayobjects.com/os/lib/lodash/4.17.21/lodash.min.js — 200 — 25.7 KiB — 404 ms — h2https://gw.alipayobjects.com/os/lib/moment/2.30.1/min/moment-with-locales.min.jsgw.alipayobjects.com/os/lib/moment/... https://gw.alipayobjects.com/os/lib/moment/2.30.1/min/moment-with-locales.min.js — 200 — 75.2 KiB — 438 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.d499ff16.jsgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/umi.d499ff16.js — 200 — 219.1 KiB — 439 ms — h2https://render.alipay.com/p/alertserver/180020010000012660_config/index.jsonrender.alipay.com/p/alertserver/180... https://render.alipay.com/p/alertserver/180020010000012660_config/index.json — 200 — 1.4 KiB — 609 ms — h2https://render.alipay.com/p/alertserver/180020010001278576_config/index.jsonrender.alipay.com/p/alertserver/180... https://render.alipay.com/p/alertserver/180020010001278576_config/index.json — 200 — 914 B — 888 ms — h2https://webgw-internet.alipay.com/webgwcommon/commom/authcenter/userInfo?ctoken=bigfish_ctoken_1a874g7b5cwebgw-internet.alipay.com/webgwcomm... https://webgw-internet.alipay.com/webgwcommon/commom/authcenter/userInfo?ctoken=bigfish_ctoken_1a874g7b5c — 200 — 0 B — 1.3 s — h2https://img.alicdn.com/tfs/TB1qEwuzrj1gK0jSZFOXXc7GpXa-32-32.icoimg.alicdn.com/tfs/TB1qEwuzrj1gK0jS... https://img.alicdn.com/tfs/TB1qEwuzrj1gK0jSZFOXXc7GpXa-32-32.ico — 200 — 4.7 KiB — 739 ms — h2https://mdn.alipayobjects.com/rms/afts/file/A*7EyORZxdNDkAAAAAAAAAAAAAARQnAQmdn.alipayobjects.com/rms/afts/file... https://mdn.alipayobjects.com/rms/afts/file/A*7EyORZxdNDkAAAAAAAAAAAAAARQnAQ — 200 — 42.4 KiB — 113 ms — h2https://webgw-internet.alipay.com/webgwcommon/commom/authcenter/userInfo?ctoken=bigfish_ctoken_1a874g7b5cwebgw-internet.alipay.com/webgwcomm... https://webgw-internet.alipay.com/webgwcommon/commom/authcenter/userInfo?ctoken=bigfish_ctoken_1a874g7b5c — 401 — 552 B — 772 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/lib-async.4f0c9598.jsgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/lib-async.4f0c9598.js — 200 — 7.0 KiB — 22 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/a10a3151-async.5c5c1a29.jsgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/a10a3151-async.5c5c1a29.js — 200 — 10.4 KiB — 24 ms — h2https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/a10a3151-async.efe93249.cssgw.alipayobjects.com/render/p/yuyan... https://gw.alipayobjects.com/render/p/yuyan/180020010001278576/a10a3151-async.efe93249.css — 200 — 2.1 KiB — 20 ms — h2https://img.alicdn.com/tfs/TB1DeJxnAY2gK0jSZFgXXc5OFXa-86-64.pngimg.alicdn.com/tfs/TB1DeJxnAY2gK0jS... https://img.alicdn.com/tfs/TB1DeJxnAY2gK0jSZFgXXc5OFXa-86-64.png — 200 — 1.8 KiB — 5 ms — h2https://render.alipay.com/p/yuyan/homeproxy-home_startup/zh_CN.jsonrender.alipay.com/p/yuyan/homeproxy... https://render.alipay.com/p/yuyan/homeproxy-home_startup/zh_CN.json — 200 — 2.2 KiB — 251 ms — h2https://mdn.alipayobjects.com/huamei_gk2yv1/afts/img/A*D2VVQIehGhwAAAAAAAAAAAAADneBAQ/originalmdn.alipayobjects.com/huamei_gk2yv1... https://mdn.alipayobjects.com/huamei_gk2yv1/afts/img/A*D2VVQIehGhwAAAAAAAAAAAAADneBAQ/original — 200 — 3.6 KiB — 25 ms — h2https://img.alicdn.com/tps/TB1POhqIFXXXXXbXFXXXXXXXXXX.pngimg.alicdn.com/tps/TB1POhqIFXXXXXbX... https://img.alicdn.com/tps/TB1POhqIFXXXXXbXFXXXXXXXXXX.png — 200 — 10.1 KiB — 11 ms — h2https://img.alicdn.com/tps/TB1uh30IpXXXXXKXVXXXXXXXXXX.pngimg.alicdn.com/tps/TB1uh30IpXXXXXKX... https://img.alicdn.com/tps/TB1uh30IpXXXXXKXVXXXXXXXXXX.png — 200 — 1018 B — 14 ms — h2https://zos.alipayobjects.com/rmsportal/neqhNGwxBXBmhVY.pngzos.alipayobjects.com/rmsportal/neq... https://zos.alipayobjects.com/rmsportal/neqhNGwxBXBmhVY.png — 200 — 1.7 KiB — 438 ms — h2https://img.alicdn.com/tps/TB12JNkIFXXXXXBXXXXXXXXXXXX.pngimg.alicdn.com/tps/TB12JNkIFXXXXXBX... https://img.alicdn.com/tps/TB12JNkIFXXXXXBXXXXXXXXXXXX.png — 200 — 992 B — 11 ms — h2https://gw.alipayobjects.com/mdn/rms_cfbd2a/afts/img/A*TQ_dRJ8sBb4AAAAAAAAAAAAAARQnAQgw.alipayobjects.com/mdn/rms_cfbd2a... https://gw.alipayobjects.com/mdn/rms_cfbd2a/afts/img/A*TQ_dRJ8sBb4AAAAAAAAAAAAAARQnAQ — 200 — 1.2 KiB — 24 ms — h2https://img.alicdn.com/tps/TB1h9xxIFXXXXbKXXXXXXXXXXXX.jpgimg.alicdn.com/tps/TB1h9xxIFXXXXbKX... https://img.alicdn.com/tps/TB1h9xxIFXXXXbKXXXXXXXXXXXX.jpg — 200 — 61.9 KiB — 12 ms — h2https://img.alicdn.com/tps/TB1.cMTIpXXXXbLXVXXXXXXXXXX.pngimg.alicdn.com/tps/TB1.cMTIpXXXXbLX... https://img.alicdn.com/tps/TB1.cMTIpXXXXbLXVXXXXXXXXXX.png — 200 — 5.3 KiB — 88 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 179ms · 219KB · ¥9/mo
gw.alipayobjects.com
Other
Optional
Execution 116ms
Transfer 219 KB
Unused 46%
Monthly Cost ¥6/mo
Unattributable
Other
Optional
Execution 63ms
Transfer 0 KB
Monthly Cost ¥3/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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