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
56 images, 0 KB saveable
REVIEW
56 images, 0 KB saveable
Warning::
!
https://pic2.iqiyipic.com/lequ/20220725/bb332a0e3f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://pic1.iqiyipic.com/lequ/20220725/11be3bd221... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://pic3.iqiyipic.com/lequ/20220725/57089bc13a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://pic1.iqiyipic.com/lequ/20220725/1948f636da... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://pic0.iqiyipic.com/lequ/20220725/4276f1d0bc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://pic1.iqiyipic.com/lequ/20220725/ad53b65165... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.iqiyipic.com/common/fix/20240419/banne... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
56images3.2 MB
0oversized-0 KB
48legacy format
7missing 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
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
1 fonts (14 KB)
PASS
1 fonts (14 KB)
Info::
i
1 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
1
14 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
iconfont.ttfttfswap
Size14 KB
Load time333 ms
Start2.1 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 ~4 KB and ~8 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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
✓
Page uses 3 resource hint(s)
Current Resource Hints
preconnect
1
preload
2
dns-prefetch—
prefetch—
3 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
91 requests over 8534ms
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-party3978ms · 358KB · ¥196/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
m.iqiyi.com
m.iqiyi.com
Other
1529ms
56 KB
—
¥75/mo
Costly
security.iqiyi.com
security.iqiyi.com
Other
754ms
109 KB
56%
¥37/mo
Costly
Unattributable
Unattributable
Other
560ms
0 KB
—
¥28/mo
Costly
static.iqiyi.com
static.iqiyi.com
Other
315ms
40 KB
—
¥16/mo
Costly
static.iqiyi.com
static.iqiyi.com
Other
309ms
94 KB
60%
¥15/mo
Costly
static.iqiyi.com
static.iqiyi.com
Other
308ms
46 KB
99%
¥15/mo
Costly
pub.m.iqiyi.com
pub.m.iqiyi.com
Other
124ms
1 KB
—
¥6/mo
Optional
hm.baidu.com
hm.baidu.com
Other
79ms
12 KB
—
¥4/mo
Optional
m.iqiyi.com
Other
Costly
Execution1529ms
Transfer56 KB
Monthly Cost¥75/mo
security.iqiyi.com
Other
Costly
Execution754ms
Transfer109 KB
Unused56%
Monthly Cost¥37/mo
Unattributable
Other
Costly
Execution560ms
Transfer0 KB
Monthly Cost¥28/mo
static.iqiyi.com
Other
Costly
Execution315ms
Transfer40 KB
Monthly Cost¥16/mo
static.iqiyi.com
Other
Costly
Execution309ms
Transfer94 KB
Unused60%
Monthly Cost¥15/mo
static.iqiyi.com
Other
Costly
Execution308ms
Transfer46 KB
Unused99%
Monthly Cost¥15/mo
pub.m.iqiyi.com
Other
Optional
Execution124ms
Transfer1 KB
Monthly Cost¥6/mo
hm.baidu.com
Other
Optional
Execution79ms
Transfer12 KB
Monthly Cost¥4/mo
These scripts may cost more than they're worth
m.iqiyi.com adds 1529ms and costs ~¥75/month
security.iqiyi.com adds 754ms and costs ~¥37/month
Unattributable adds 560ms and costs ~¥28/month
static.iqiyi.com adds 315ms and costs ~¥16/month
static.iqiyi.com adds 309ms and costs ~¥15/month
static.iqiyi.com adds 308ms and costs ~¥15/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
m.iqiyi.com takes 1529ms 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
security.iqiyi.com takes 754ms 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 security.iqiyi.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
Unattributable takes 560ms 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.iqiyi.com takes 315ms 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.iqiyi.com takes 309ms 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
60% of static.iqiyi.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
static.iqiyi.com takes 308ms 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
99% of static.iqiyi.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.