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.
5.59 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
19.07 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
411 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.065
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.00 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.
25.74 s
Page Load Progression
FPage Weight BudgetAction5.7 MB transferred, 213 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction8279ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gmw.cn/ | 2998ms | 11ms | 7ms | 3rd |
| Unattributable | 1792ms | 16ms | 0ms | 3rd |
| https://ad.gmw.cn/47800.files/js/index_frameAD.js | 1317ms | 1136ms | 6ms | 3rd |
| https://img.gmw.cn/js/jquery.js | 1257ms | 755ms | 180ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-1NBSV0RRQR | 452ms | 364ms | 80ms | 3rd |
| https://ad.gmw.cn/html/indexbanner_800_1.htm | 222ms | 0ms | 0ms | 3rd |
| https://ad.gmw.cn/html/indexbanner_300_1.htm | 184ms | 0ms | 0ms | 3rd |
| https://ad.gmw.cn/html/indexbanner_800_2.htm | 57ms | 0ms | 0ms | 3rd |
DJS BundlesAction41 scripts, 444 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-1NBSV0RRQR | 158 KB | 65 KB (41%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 93 KB | 34 KB (37%) | ✓ | 3rd |
| https://img.gmw.cn/js/jquery.js | 0 KB | 34 KB (37%) | ✓ | 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
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
FPage Weight InventoryAction213 resources · 5.7 MB · 444 KB savings availableFIX
~443.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 213 resources | 5.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction140 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
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
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 LoadingNo web fonts (system fonts)PASS
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 Waterfall213 requests over 6394msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gmw.cn www.gmw.cn | Other | 2998ms | 153 KB | — | ¥148/mo | Costly |
Unattributable Unattributable | Other | 1792ms | 0 KB | — | ¥88/mo | Costly |
ad.gmw.cn ad.gmw.cn | Other | 1317ms | 0 KB | — | ¥65/mo | Costly |
img.gmw.cn img.gmw.cn | Other | 1257ms | 0 KB | 37% | ¥62/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 452ms | 158 KB | 41% | ¥22/mo | Costly |
ad.gmw.cn ad.gmw.cn | Other | 222ms | 1 KB | — | ¥11/mo | Costly |
ad.gmw.cn ad.gmw.cn | Other | 184ms | 1 KB | — | ¥9/mo | Optional |
ad.gmw.cn ad.gmw.cn | Other | 57ms | 1 KB | — | ¥3/mo | Optional |
These scripts may cost more than they're worth
- www.gmw.cn adds 2998ms and costs ~¥148/month
- Unattributable adds 1792ms and costs ~¥88/month
- ad.gmw.cn adds 1317ms and costs ~¥65/month
- img.gmw.cn adds 1257ms and costs ~¥62/month
- Google Tag Manager adds 452ms and costs ~¥22/month
- ad.gmw.cn adds 222ms 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
www.gmw.cn takes 2998ms 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 1792ms 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
ad.gmw.cn takes 1317ms 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
img.gmw.cn takes 1257ms 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
Google Tag Manager takes 452ms 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
ad.gmw.cn takes 222ms 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