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
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+
Image Optimization
17 images, 0 KB saveable
PASS
17 images, 0 KB saveable
Info::
✓
All images are well-optimized
17images486 KB
0oversized-0 KB
1legacy format
0missing dimensionsCLS risk
A+
Font Loading
13 fonts (219 KB)
PASS
13 fonts (219 KB)
Info::
i
13 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
13
219 KB total
Render-blocking
0
of 13
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
k00.woff2woff2swap
Size19 KB
Load time20 ms
Start793 ms
RiskFOUT — text flashes from fallback to web font
1300.woff2woff2swap
Size18 KB
Load time21 ms
Start793 ms
RiskFOUT — text flashes from fallback to web font
k27.woff2woff2swap
Size9 KB
Load time22 ms
Start794 ms
RiskFOUT — text flashes from fallback to web font
f00.woff2woff2swap
Size20 KB
Load time23 ms
Start794 ms
RiskFOUT — text flashes from fallback to web font
1327.woff2woff2swap
Size9 KB
Load time28 ms
Start794 ms
RiskFOUT — text flashes from fallback to web font
f27.woff2woff2swap
Size9 KB
Load time26 ms
Start795 ms
RiskFOUT — text flashes from fallback to web font
u00.woff2woff2swap
Size18 KB
Load time5 ms
Start940 ms
RiskFOUT — text flashes from fallback to web font
f01.woff2woff2swap
Size17 KB
Load time5 ms
Start2.5 s
RiskFOUT — text flashes from fallback to web font
k02.woff2woff2swap
Size18 KB
Load time6 ms
Start2.6 s
RiskFOUT — text flashes from fallback to web font
k01.woff2woff2swap
Size16 KB
Load time7 ms
Start2.6 s
RiskFOUT — text flashes from fallback to web font
k25.woff2woff2swap
Size25 KB
Load time8 ms
Start2.6 s
RiskFOUT — text flashes from fallback to web font
k07.woff2woff2swap
Size15 KB
Load time9 ms
Start2.6 s
RiskFOUT — text flashes from fallback to web font
k08.woff2woff2swap
Size26 KB
Load time10 ms
Start2.6 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
5 hints, 0 missing preconnects
PASS
5 hints, 0 missing preconnects
Info::
✓
Page uses 5 resource hint(s)
Current Resource Hints
preconnect
4
preload
1
dns-prefetch—
prefetch—
5 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
122 requests over 32809ms
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-party6348ms · 701KB · $84/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
1406ms
30 KB
—
$19/mo
Costly
Unattributable
Unattributable
Other
1404ms
0 KB
—
$19/mo
Costly
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
1024ms
1 KB
21%
$14/mo
Costly
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
848ms
43 KB
—
$11/mo
Costly
assets.adobedtm.com
assets.adobedtm.com
Other
525ms
141 KB
39%
$7/mo
Costly
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
348ms
29 KB
—
$5/mo
Costly
apps.usw2.pure.cloud
apps.usw2.pure.cloud
Other
301ms
156 KB
51%
$4/mo
Costly
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
124ms
82 KB
—
$2/mo
Optional
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
106ms
7 KB
—
$1/mo
Optional
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
81ms
155 KB
64%
$1/mo
Optional
consent.trustarc.com
consent.trustarc.com
Other
75ms
13 KB
—
$1/mo
Optional
consent.trustarc.com
consent.trustarc.com
Other
54ms
36 KB
70%
$1/mo
Optional
www.churchofjesuschrist.org
www.churchofjesuschrist.org
Other
51ms
8 KB
—
$1/mo
Optional
www.churchofjesuschrist.org
Other
Costly
Execution1406ms
Transfer30 KB
Monthly Cost$19/mo
Unattributable
Other
Costly
Execution1404ms
Transfer0 KB
Monthly Cost$19/mo
www.churchofjesuschrist.org
Other
Costly
Execution1024ms
Transfer1 KB
Unused21%
Monthly Cost$14/mo
www.churchofjesuschrist.org
Other
Costly
Execution848ms
Transfer43 KB
Monthly Cost$11/mo
assets.adobedtm.com
Other
Costly
Execution525ms
Transfer141 KB
Unused39%
Monthly Cost$7/mo
www.churchofjesuschrist.org
Other
Costly
Execution348ms
Transfer29 KB
Monthly Cost$5/mo
apps.usw2.pure.cloud
Other
Costly
Execution301ms
Transfer156 KB
Unused51%
Monthly Cost$4/mo
www.churchofjesuschrist.org
Other
Optional
Execution124ms
Transfer82 KB
Monthly Cost$2/mo
www.churchofjesuschrist.org
Other
Optional
Execution106ms
Transfer7 KB
Monthly Cost$1/mo
www.churchofjesuschrist.org
Other
Optional
Execution81ms
Transfer155 KB
Unused64%
Monthly Cost$1/mo
consent.trustarc.com
Other
Optional
Execution75ms
Transfer13 KB
Monthly Cost$1/mo
consent.trustarc.com
Other
Optional
Execution54ms
Transfer36 KB
Unused70%
Monthly Cost$1/mo
www.churchofjesuschrist.org
Other
Optional
Execution51ms
Transfer8 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
www.churchofjesuschrist.org adds 1406ms and costs ~$19/month
Unattributable adds 1404ms and costs ~$19/month
www.churchofjesuschrist.org adds 1024ms and costs ~$14/month
www.churchofjesuschrist.org adds 848ms and costs ~$11/month
assets.adobedtm.com adds 525ms and costs ~$7/month
www.churchofjesuschrist.org adds 348ms and costs ~$5/month
apps.usw2.pure.cloud adds 301ms 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
www.churchofjesuschrist.org takes 1406ms 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 1404ms 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.churchofjesuschrist.org takes 1024ms 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.churchofjesuschrist.org takes 848ms 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
assets.adobedtm.com takes 525ms 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.churchofjesuschrist.org takes 348ms 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
apps.usw2.pure.cloud takes 301ms 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
51% of apps.usw2.pure.cloud'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
64% of www.churchofjesuschrist.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
70% of consent.trustarc.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.