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
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
!
https://www.louisiana.gov/media/vksdhvgj/louisiana... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.louisiana.gov/media/1a4lgwfl/id-card-s... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.louisiana.gov/media/vwoftdmf/users-sol... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.louisiana.gov/media/d24jgksa/vest.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.louisiana.gov/media/zztprcgv/hand-hold... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.louisiana.gov/media/l4kb4p0y/louisiana... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11images1.7 MB
0oversized-0 KB
11legacy format
6missing 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
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+
JS Execution Cost
234ms total JS execution
PASS
234ms total JS execution
Info::
i
Unattributable: 139ms CPU time
Info::
i
https://www.louisiana.gov/: 95ms CPU time
Warning::
!
Third-party scripts: 234ms (100% of total)
Main Thread Breakdown
Script Evaluation 39% Other 29% Script Parsing & Compilation 12% Style & Layout 11% Parse HTML & CSS 7%
Script
Total
Scripting
Parse/Compile
Party
Unattributable
139ms
17ms
0ms
3rd
https://www.louisiana.gov/
95ms
3ms
3ms
3rd
A+
Font Loading
3 fonts (123 KB)
PASS
3 fonts (123 KB)
Info::
i
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
123 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size37 KB
Load time46 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
fa-regular-400.woff2woff2swap
Size14 KB
Load time25 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
fa-solid-900.woff2woff2swap
Size73 KB
Load time42 ms
Start1.2 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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
Network Waterfall
69 requests over 2758ms
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-party234ms · 426KB · €3/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
139ms
0 KB
—
€2/mo
Optional
www.louisiana.gov
www.louisiana.gov
Other
95ms
426 KB
—
€1/mo
Optional
Unattributable
Other
Optional
Execution139ms
Transfer0 KB
Monthly Cost€2/mo
www.louisiana.gov
Other
Optional
Execution95ms
Transfer426 KB
Monthly Cost€1/mo
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.