Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
6.87 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.81 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
537 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.099
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.52 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.
13.03 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction3690ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://fecdn5.zhaopin.cn/m_zhaopin_com/index.web.4cb782debde15e040589ac09e3ec40b9.js | 1643ms | 1135ms | 161ms | 3rd |
| https://m.zhaopin.com/ | 1098ms | 24ms | 98ms | 3rd |
| Unattributable | 506ms | 10ms | 0ms | 3rd |
| https://statistic.zhaopin.cn/sdk/sa/1.26.3/sa.min.js | 217ms | 189ms | 23ms | 3rd |
| https://m.zhaopin.com/widgets/c-mobile-register-poster | 94ms | 48ms | 44ms | 3rd |
| https://img00.zhaopin.cn/2014/common/js/jquery-1.9.1.min.js | 81ms | 50ms | 12ms | 3rd |
| https://hm.baidu.com/hm.js?08e585d395455886ebe17d4b393b6523 | 51ms | 45ms | 4ms | 3rd |
DPage Weight InventoryAction82 resources · 1.6 MB · 179 KB savings availableFIX
~178.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 82 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 82 requestsREVIEW
CImage OptimizationAction50 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS BundlesAction16 scripts, 179 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fecdn5.zhaopin.cn/m_zhaopin_com/index.web.4cb782debde15e040589ac09e3ec40b9.js | 303 KB | 127 KB (44%) | ✓ | 3rd |
| https://statistic.zhaopin.cn/sdk/sa/1.26.3/sa.min.js | 51 KB | 30 KB (58%) | ✓ | 3rd |
| https://img00.zhaopin.cn/2014/common/js/jquery-1.9.1.min.js | 33 KB | 22 KB (69%) | ✓ | 3rd |
| https://common-bucket.zhaopin.cn/js/zpfe-stat-sdk/zpfe-stat-sdk-latest.js | 4 KB | — | ✓ | 3rd |
| https://img09.zhaopin.com/2012/other/mobile/scripts/cmblapi.min.js | 3 KB | — | ✓ | 3rd |
| https://mipcache.bdstatic.com/extensions/platform/v1/mip-zpm-commonga/mip-zpm-commonga.js | 2 KB | — | ✓ | 3rd |
| https://common-bucket.zhaopin.cn/js/zpfe-widget-sdk/zpfe-widget-sdk-latest.js | 2 KB | — | ✓ | 3rd |
| https://img09.zhaopin.cn/2012/other/mobile/resourceImg/resourceStyle/js/flexible.js | 2 KB | — | ✓ | 3rd |
| https://img09.zhaopin.cn/2012/other/mobile/scripts/md5.js | 3 KB | — | ✓ | 3rd |
| https://res.wx.qq.com/open/js/jweixin-1.6.0.js | 13 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (1 KB)PASS
Web fonts
1
1 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall82 requests over 9884msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
fecdn5.zhaopin.cn fecdn5.zhaopin.cn | Other | 1643ms | 303 KB | 44% | ¥81/mo | Costly |
m.zhaopin.com m.zhaopin.com | Other | 1098ms | 62 KB | — | ¥54/mo | Costly |
Unattributable Unattributable | Other | 506ms | 0 KB | — | ¥25/mo | Costly |
statistic.zhaopin.cn statistic.zhaopin.cn | Other | 217ms | 51 KB | 58% | ¥11/mo | Costly |
m.zhaopin.com m.zhaopin.com | Other | 94ms | 0 KB | — | ¥5/mo | Optional |
img00.zhaopin.cn img00.zhaopin.cn | Other | 81ms | 33 KB | 69% | ¥4/mo | Optional |
hm.baidu.com hm.baidu.com | Other | 51ms | 12 KB | — | ¥3/mo | Optional |
These scripts may cost more than they're worth
- fecdn5.zhaopin.cn adds 1643ms and costs ~¥81/month
- m.zhaopin.com adds 1098ms and costs ~¥54/month
- Unattributable adds 506ms and costs ~¥25/month
- statistic.zhaopin.cn adds 217ms and costs ~¥11/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
fecdn5.zhaopin.cn takes 1643ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
m.zhaopin.com takes 1098ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 506ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
statistic.zhaopin.cn takes 217ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
58% of statistic.zhaopin.cn's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
69% of img00.zhaopin.cn's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev