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
Page Weight Budget
Action
1.7 MB transferred, 44 requests
REVIEW
1.7 MB transferred, 44 requests
Info::
i
Page weighs 5.3 MB (1.7 MB transferred)
Warning::
!
JavaScript is 787 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 787 KB
Info::
✓
44 HTTP requests
Info::
i
Estimated 0.35 g CO2 per page load
1.7 MBtransferred
44 requests
0.35 g CO2 per page load
JavaScript787.3 KiB46%
Images654.5 KiB38%
Other123.6 KiB7%
Fonts72.7 KiB4%
HTML34.0 KiB2%
Other24.5 KiB1%
CSS3.0 KiB0%
Other1.1 KiB0%
Other0 B0%
02.4 MB4.9 MB
Approaching limit
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
B
Image Optimization
15 images, 0 KB saveable
REVIEW
15 images, 0 KB saveable
Info::
✓
All images are well-optimized
15images655 KB
0oversized-0 KB
14legacy format
0missing dimensionsCLS risk
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
3 fonts (73 KB)
PASS
3 fonts (73 KB)
Info::
i
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
73 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
coresansnr47-webfont.woff2woff2swap
Size32 KB
Load time30 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
coresansnr57-webfont.woff2woff2swap
Size33 KB
Load time32 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
glyphutil_neue-webfont_...woff2swap
Size8 KB
Load time68 ms
Start1.3 s
RiskFOUT — text flashes from fallback to web font
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 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
44 requests over 2749ms
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-party2354ms · 818KB · CA$33/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
cmp.inmobi.com
cmp.inmobi.com
Other
470ms
116 KB
49%
CA$6/mo
Costly
www.autoevolution.com
www.autoevolution.com
Other
405ms
34 KB
—
CA$6/mo
Costly
cmp.inmobi.com
cmp.inmobi.com
Other
390ms
125 KB
48%
CA$5/mo
Costly
Unattributable
Unattributable
Other
356ms
0 KB
—
CA$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
250ms
168 KB
40%
CA$3/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
201ms
187 KB
69%
CA$3/mo
Costly
s1.cdn.autoevolution.com
s1.cdn.autoevolution.com
Other
141ms
109 KB
70%
CA$2/mo
Optional
s1.cdn.autoevolution.com
s1.cdn.autoevolution.com
Other
71ms
43 KB
66%
CA$1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
71ms
35 KB
—
CA$1/mo
Optional
cmp.inmobi.com
Other
Costly
Execution470ms
Transfer116 KB
Unused49%
Monthly CostCA$6/mo
www.autoevolution.com
Other
Costly
Execution405ms
Transfer34 KB
Monthly CostCA$6/mo
cmp.inmobi.com
Other
Costly
Execution390ms
Transfer125 KB
Unused48%
Monthly CostCA$5/mo
Unattributable
Other
Costly
Execution356ms
Transfer0 KB
Monthly CostCA$5/mo
Google Tag Manager
Tag Manager
Costly
Execution250ms
Transfer168 KB
Unused40%
Monthly CostCA$3/mo
securepubads.g.doubleclick.net
Other
Costly
Execution201ms
Transfer187 KB
Unused69%
Monthly CostCA$3/mo
s1.cdn.autoevolution.com
Other
Optional
Execution141ms
Transfer109 KB
Unused70%
Monthly CostCA$2/mo
s1.cdn.autoevolution.com
Other
Optional
Execution71ms
Transfer43 KB
Unused66%
Monthly CostCA$1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution71ms
Transfer35 KB
Monthly CostCA$1/mo
These scripts may cost more than they're worth
cmp.inmobi.com adds 470ms and costs ~CA$6/month
www.autoevolution.com adds 405ms and costs ~CA$6/month
cmp.inmobi.com adds 390ms and costs ~CA$5/month
Unattributable adds 356ms and costs ~CA$5/month
Google Tag Manager adds 250ms and costs ~CA$3/month
securepubads.g.doubleclick.net adds 201ms and costs ~CA$3/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
cmp.inmobi.com takes 470ms 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
www.autoevolution.com takes 405ms 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
cmp.inmobi.com takes 390ms 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 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
Google Tag Manager takes 250ms 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
securepubads.g.doubleclick.net takes 201ms 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
69% of securepubads.g.doubleclick.net'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
70% of s1.cdn.autoevolution.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 s1.cdn.autoevolution.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.