Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
B
HTTP Caching
public, max age=30000
REVIEW
public, max age=30000
Info::
✓
Cache-Control header is set
Got: public, max age=30000
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max age=30000
Directive
Value
Meaning
public
—
Any cache may store this response
max age
30000
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
2 fonts (41 KB)
PASS
2 fonts (41 KB)
Info::
i
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
41 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
fontwoff2swap
Size4 KB
Load time30 ms
Start802 ms
RiskFOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size37 KB
Load time67 ms
Start802 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
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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall
91 requests over 4704ms
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-party3741ms · 674KB · €65/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
my.clevelandclinic.org
my.clevelandclinic.org
Other
968ms
11 KB
—
€17/mo
Costly
Unattributable
Unattributable
Other
576ms
0 KB
—
€10/mo
Costly
code.jquery.com
code.jquery.com
Other
540ms
30 KB
—
€9/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
376ms
170 KB
47%
€7/mo
Costly
Optimizely
cdn.optimizely.com
A/B Testing
354ms
123 KB
34%
€6/mo
Costly
assets.adobedtm.com
assets.adobedtm.com
Other
328ms
67 KB
40%
€6/mo
Costly
bigidcmp.cloud
bigidcmp.cloud
Other
283ms
53 KB
61%
€5/mo
Costly
oc-cdn-ocprod.azureedge.net
oc-cdn-ocprod.azureedge.net
Other
259ms
113 KB
59%
€4/mo
Costly
my.clevelandclinic.org
my.clevelandclinic.org
Other
57ms
107 KB
—
€1/mo
Optional
my.clevelandclinic.org
Other
Costly
Execution968ms
Transfer11 KB
Monthly Cost€17/mo
Unattributable
Other
Costly
Execution576ms
Transfer0 KB
Monthly Cost€10/mo
code.jquery.com
Other
Costly
Execution540ms
Transfer30 KB
Monthly Cost€9/mo
Google Tag Manager
Tag Manager
Costly
Execution376ms
Transfer170 KB
Unused47%
Monthly Cost€7/mo
Optimizely
A/B Testing
Costly
Execution354ms
Transfer123 KB
Unused34%
Monthly Cost€6/mo
assets.adobedtm.com
Other
Costly
Execution328ms
Transfer67 KB
Unused40%
Monthly Cost€6/mo
bigidcmp.cloud
Other
Costly
Execution283ms
Transfer53 KB
Unused61%
Monthly Cost€5/mo
oc-cdn-ocprod.azureedge.net
Other
Costly
Execution259ms
Transfer113 KB
Unused59%
Monthly Cost€4/mo
my.clevelandclinic.org
Other
Optional
Execution57ms
Transfer107 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
my.clevelandclinic.org adds 968ms and costs ~€17/month
Unattributable adds 576ms and costs ~€10/month
code.jquery.com adds 540ms and costs ~€9/month
Google Tag Manager adds 376ms and costs ~€7/month
Optimizely adds 354ms and costs ~€6/month
assets.adobedtm.com adds 328ms and costs ~€6/month
bigidcmp.cloud adds 283ms and costs ~€5/month
oc-cdn-ocprod.azureedge.net adds 259ms 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
my.clevelandclinic.org takes 968ms 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 576ms 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
code.jquery.com takes 540ms 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 376ms 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
Optimizely takes 354ms 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 328ms 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
bigidcmp.cloud takes 283ms 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 bigidcmp.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
oc-cdn-ocprod.azureedge.net takes 259ms 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
59% of oc-cdn-ocprod.azureedge.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.