https://www.google.com/chrome/static/images/v2/gal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.google.com/chrome/static/images/v2/gal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.google.com/chrome/static/images/gen-ai... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19images2.4 MB
0oversized-0 KB
4legacy format
3missing 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
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
10 fonts (203 KB)
PASS
10 fonts (203 KB)
Info::
i
10 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
10
203 KB total
Render-blocking
0
of 10
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size33 KB
Load time27 ms
Start308 ms
RiskFOUT — text flashes from fallback to web font
5aUp9-KzpRiLCAt4Unrc-xI...woff2swap
Size23 KB
Load time26 ms
Start308 ms
RiskFOUT — text flashes from fallback to web font
5aUu9-KzpRiLCAt4Unrc-xI...woff2swap
Size22 KB
Load time27 ms
Start308 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size19 KB
Load time13 ms
Start932 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size8 KB
Load time16 ms
Start932 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size9 KB
Load time20 ms
Start933 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size16 KB
Load time31 ms
Start933 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size12 KB
Load time28 ms
Start933 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size46 KB
Load time31 ms
Start934 ms
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size17 KB
Load time32 ms
Start934 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)
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
8 hints, 0 missing preconnects
PASS
8 hints, 0 missing preconnects
Info::
✓
Page uses 8 resource hint(s)
Current Resource Hints
preconnect
6
preload
2
dns-prefetch—
prefetch—
8 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
A
HTTP Caching
max-age=1800 (30 minutes)
PASS
max-age=1800 (30 minutes)
Info::
✓
Cache-Control header is set
Got: public, max-age=1800
Info::
✓
Effective TTL: 30 minutes (max-age=1800)
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max-age=1800
Directive
Value
Meaning
public
—
Any cache may store this response
max-age
1800
Cache for 30 minutes
Effective TTL: 1800 seconds
Network Waterfall
80 requests over 1401ms
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-party6743ms · 532KB · €108/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.google.com
www.google.com
Other
2020ms
71 KB
—
€32/mo
Costly
www.google.com
www.google.com
Other
1420ms
38 KB
56%
€23/mo
Costly
Unattributable
Unattributable
Other
1229ms
0 KB
—
€20/mo
Costly
www.gstatic.com
www.gstatic.com
Other
812ms
25 KB
—
€13/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
537ms
158 KB
44%
€9/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
372ms
144 KB
43%
€6/mo
Costly
www.gstatic.com
www.gstatic.com
Other
135ms
27 KB
—
€2/mo
Optional
www.gstatic.com
www.gstatic.com
Other
130ms
41 KB
52%
€2/mo
Optional
www.google.com
www.google.com
Other
88ms
28 KB
—
€1/mo
Optional
www.google.com
Other
Costly
Execution2020ms
Transfer71 KB
Monthly Cost€32/mo
www.google.com
Other
Costly
Execution1420ms
Transfer38 KB
Unused56%
Monthly Cost€23/mo
Unattributable
Other
Costly
Execution1229ms
Transfer0 KB
Monthly Cost€20/mo
www.gstatic.com
Other
Costly
Execution812ms
Transfer25 KB
Monthly Cost€13/mo
Google Tag Manager
Tag Manager
Costly
Execution537ms
Transfer158 KB
Unused44%
Monthly Cost€9/mo
Google Tag Manager
Tag Manager
Costly
Execution372ms
Transfer144 KB
Unused43%
Monthly Cost€6/mo
www.gstatic.com
Other
Optional
Execution135ms
Transfer27 KB
Monthly Cost€2/mo
www.gstatic.com
Other
Optional
Execution130ms
Transfer41 KB
Unused52%
Monthly Cost€2/mo
www.google.com
Other
Optional
Execution88ms
Transfer28 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.google.com adds 2020ms and costs ~€32/month
www.google.com adds 1420ms and costs ~€23/month
Unattributable adds 1229ms and costs ~€20/month
www.gstatic.com adds 812ms and costs ~€13/month
Google Tag Manager adds 537ms and costs ~€9/month
Google Tag Manager adds 372ms and costs ~€6/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
www.google.com takes 2020ms 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.google.com takes 1420ms 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 www.google.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 1229ms 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.gstatic.com takes 812ms 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 537ms 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 372ms 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
52% of www.gstatic.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.