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
12 images, 0 KB saveable
REVIEW
12 images, 0 KB saveable
Warning::
!
https://s3.us-east-1.amazonaws.com/cdn-origin-etr.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.akc.org/wp-content/uploads/2025/08/reg... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.akc.org/wp-content/themes/akc/componen... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
12images67 KB
0oversized-0 KB
7legacy format
4missing 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
Performance issues directly impact user engagement and conversion rates.
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
7 fonts (182 KB)
PASS
7 fonts (182 KB)
Info::
i
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
182 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
lato-v20-latin-regular....woff2swap
Size23 KB
Load time15 ms
Start261 ms
RiskFOUT — text flashes from fallback to web font
lato-v20-latin-italic.w...woff2swap
Size24 KB
Load time12 ms
Start262 ms
RiskFOUT — text flashes from fallback to web font
PaytoneOne-Regular.ttfttfswap
Size56 KB
Load time19 ms
Start262 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
lato-v20-latin-700.woff2woff2swap
Size23 KB
Load time8 ms
Start262 ms
RiskFOUT — text flashes from fallback to web font
merriweather-v25-latin-...woff2swap
Size20 KB
Load time17 ms
Start263 ms
RiskFOUT — text flashes from fallback to web font
SofiaHandwritten.woff2woff2swap
Size14 KB
Load time6 ms
Start263 ms
RiskFOUT — text flashes from fallback to web font
lato-v20-latin-300.woff2woff2swap
Size23 KB
Load time7 ms
Start469 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 ~17 KB and ~34 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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
✓
Page uses 1 resource hint(s)
Current Resource Hints
preconnect—
preload—
dns-prefetch
1
prefetch—
1 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
97 requests over 3448ms
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-party4359ms · 1573KB · €47/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.akc.org
www.akc.org
Other
1023ms
138 KB
55%
€11/mo
Costly
Unattributable
Unattributable
Other
661ms
0 KB
—
€7/mo
Costly
www.akc.org
www.akc.org
Other
590ms
119 KB
—
€6/mo
Costly
cdns.gigya.com
cdns.gigya.com
Other
408ms
238 KB
61%
€4/mo
Costly
OneTrust
cdn.cookielaw.org
Consent
281ms
126 KB
50%
€3/mo
Essential
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
257ms
188 KB
54%
€3/mo
Costly
www.akc.org
www.akc.org
Other
249ms
1 KB
—
€3/mo
Costly
js-agent.newrelic.com
js-agent.newrelic.com
Other
228ms
19 KB
—
€2/mo
Costly
cdns2.gigya.com
cdns2.gigya.com
Other
152ms
298 KB
72%
€2/mo
Optional
cdns1.gigya.com
cdns1.gigya.com
Other
106ms
342 KB
70%
€1/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
100ms
22 KB
—
€1/mo
Essential
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
86ms
34 KB
—
€1/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
83ms
9 KB
—
€1/mo
Essential
www.akc.org
www.akc.org
Other
78ms
35 KB
—
€1/mo
Optional
www.akc.org
www.akc.org
Other
58ms
5 KB
—
€1/mo
Optional
www.akc.org
Other
Costly
Execution1023ms
Transfer138 KB
Unused55%
Monthly Cost€11/mo
Unattributable
Other
Costly
Execution661ms
Transfer0 KB
Monthly Cost€7/mo
www.akc.org
Other
Costly
Execution590ms
Transfer119 KB
Monthly Cost€6/mo
cdns.gigya.com
Other
Costly
Execution408ms
Transfer238 KB
Unused61%
Monthly Cost€4/mo
OneTrust
Consent
Essential
Execution281ms
Transfer126 KB
Unused50%
Monthly Cost€3/mo
securepubads.g.doubleclick.net
Other
Costly
Execution257ms
Transfer188 KB
Unused54%
Monthly Cost€3/mo
www.akc.org
Other
Costly
Execution249ms
Transfer1 KB
Monthly Cost€3/mo
js-agent.newrelic.com
Other
Costly
Execution228ms
Transfer19 KB
Monthly Cost€2/mo
cdns2.gigya.com
Other
Optional
Execution152ms
Transfer298 KB
Unused72%
Monthly Cost€2/mo
cdns1.gigya.com
Other
Optional
Execution106ms
Transfer342 KB
Unused70%
Monthly Cost€1/mo
OneTrust
Consent
Essential
Execution100ms
Transfer22 KB
Monthly Cost€1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution86ms
Transfer34 KB
Monthly Cost€1/mo
OneTrust
Consent
Essential
Execution83ms
Transfer9 KB
Monthly Cost€1/mo
www.akc.org
Other
Optional
Execution78ms
Transfer35 KB
Monthly Cost€1/mo
www.akc.org
Other
Optional
Execution58ms
Transfer5 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.akc.org adds 1023ms and costs ~€11/month
Unattributable adds 661ms and costs ~€7/month
www.akc.org adds 590ms and costs ~€6/month
cdns.gigya.com adds 408ms and costs ~€4/month
securepubads.g.doubleclick.net adds 257ms and costs ~€3/month
www.akc.org adds 249ms and costs ~€3/month
js-agent.newrelic.com adds 228ms and costs ~€2/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.akc.org takes 1023ms 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
55% of www.akc.org'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 661ms 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.akc.org takes 590ms 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
cdns.gigya.com takes 408ms 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
61% of cdns.gigya.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
50% of OneTrust'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
securepubads.g.doubleclick.net takes 257ms 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
54% 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
www.akc.org takes 249ms 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
js-agent.newrelic.com takes 228ms 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
72% of cdns2.gigya.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
70% of cdns1.gigya.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.