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.
B
Page Weight Budget
1.5 MB transferred, 52 requests
REVIEW
1.5 MB transferred, 52 requests
Info::
✓
Page weighs 3.0 MB (1.5 MB transferred)
Warning::
!
JavaScript is 674 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 674 KB
Info::
i
Fonts are 634 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 634 KB
Info::
i
52 HTTP requests
Info::
i
Estimated 0.30 g CO2 per page load
1.5 MBtransferred
52 requests
0.30 g CO2 per page load
JavaScript674.4 KiB45%
Fonts634.0 KiB43%
Images130.6 KiB9%
HTML23.8 KiB2%
Other15.6 KiB1%
CSS5.6 KiB0%
Other1.4 KiB0%
Other1.1 KiB0%
Other512 B0%
02.4 MB4.9 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
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
B
Image Optimization
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Info::
✓
All images are well-optimized
11images131 KB
0oversized-0 KB
10legacy 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
11 fonts (634 KB)
PASS
11 fonts (634 KB)
Info::
i
11 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
11
634 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time142 ms
Start332 ms
RiskFOUT — text flashes from fallback to web font
vEFI2_tTDB4M7-auWDN0ahZ...woff2swap
Size119 KB
Load time170 ms
Start333 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
i7dPIFZifjKcF5UAWdDRYEF...woff2swap
Size9 KB
Load time105 ms
Start333 ms
RiskFOUT — text flashes from fallback to web font
vEFK2_tTDB4M7-auWDN0ahZ...woff2swap
Size127 KB
Load time170 ms
Start333 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
lwoff2swap
Size42 KB
Load time69 ms
Start335 ms
RiskFOUT — text flashes from fallback to web font
lwoff2swap
Size42 KB
Load time80 ms
Start335 ms
RiskFOUT — text flashes from fallback to web font
lwoff2swap
Size39 KB
Load time77 ms
Start335 ms
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time32 ms
Start736 ms
RiskFOUT — text flashes from fallback to web font
lwoff2swap
Size42 KB
Load time10 ms
Start737 ms
RiskFOUT — text flashes from fallback to web font
vEFI2_tTDB4M7-auWDN0ahZ...woff2swap
Size119 KB
Load time39 ms
Start737 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
i7dPIFZifjKcF5UAWdDRYEF...woff2swap
Size9 KB
Load time33 ms
Start737 ms
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)
Fixing the unchecked items could save ~183 KB and ~366 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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
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
52 requests over 1494ms
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-party2253ms · 634KB · $30/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
s.ntv.io
s.ntv.io
Other
805ms
251 KB
79%
$11/mo
Costly
www.cracked.com
www.cracked.com
Other
381ms
24 KB
—
$5/mo
Costly
Unattributable
Unattributable
Other
285ms
0 KB
—
$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
264ms
159 KB
41%
$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
264ms
140 KB
44%
$4/mo
Costly
ui-seo.crackedcdn.com
ui-seo.crackedcdn.com
Other
111ms
8 KB
—
$1/mo
Optional
static.chartbeat.com
static.chartbeat.com
Other
76ms
16 KB
—
$1/mo
Optional
fourlevelsgame.com
fourlevelsgame.com
Other
67ms
36 KB
—
$1/mo
Optional
s.ntv.io
Other
Costly
Execution805ms
Transfer251 KB
Unused79%
Monthly Cost$11/mo
www.cracked.com
Other
Costly
Execution381ms
Transfer24 KB
Monthly Cost$5/mo
Unattributable
Other
Costly
Execution285ms
Transfer0 KB
Monthly Cost$4/mo
Google Tag Manager
Tag Manager
Costly
Execution264ms
Transfer159 KB
Unused41%
Monthly Cost$4/mo
Google Tag Manager
Tag Manager
Costly
Execution264ms
Transfer140 KB
Unused44%
Monthly Cost$4/mo
ui-seo.crackedcdn.com
Other
Optional
Execution111ms
Transfer8 KB
Monthly Cost$1/mo
static.chartbeat.com
Other
Optional
Execution76ms
Transfer16 KB
Monthly Cost$1/mo
fourlevelsgame.com
Other
Optional
Execution67ms
Transfer36 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
s.ntv.io adds 805ms and costs ~$11/month
www.cracked.com adds 381ms and costs ~$5/month
Unattributable adds 285ms and costs ~$4/month
Google Tag Manager adds 264ms and costs ~$4/month
Google Tag Manager adds 264ms and costs ~$4/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
s.ntv.io takes 805ms 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
79% of s.ntv.io'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
www.cracked.com takes 381ms 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 285ms 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 264ms 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 264ms 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.