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
16 images, 0 KB saveable
PASS
16 images, 0 KB saveable
Info::
✓
All images are well-optimized
16images2.5 MB
0oversized-0 KB
0legacy format
0missing dimensionsCLS risk
A+
Font Loading
7 fonts (266 KB)
PASS
7 fonts (266 KB)
Info::
i
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
266 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
BWHaasGrotesk-55Roman-W...woff2swap
Size31 KB
Load time49 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasGrotesk-65Medium-...woff2swap
Size44 KB
Load time53 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasHead-95Black-d9b9...woff2swap
Size44 KB
Load time57 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasGrotesk-95Black-W...woff2swap
Size28 KB
Load time31 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasHead-55Roman-bb69...woff2swap
Size43 KB
Load time43 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasGrotesk-75Bold-We...woff2swap
Size32 KB
Load time44 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
BWHaasHead-65Medium-a4b...woff2swap
Size44 KB
Load time10 ms
Start2.1 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
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
166 requests over 4890ms
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-party13770ms · 2281KB · $183/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
2688ms
0 KB
—
$36/mo
Costly
www.bloomberg.com
www.bloomberg.com
Other
2467ms
525 KB
—
$33/mo
Costly
assets.bwbx.io
assets.bwbx.io
Other
1521ms
42 KB
—
$20/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
1481ms
212 KB
26%
$20/mo
Costly
sourcepointcmp.bloomberg.com
sourcepointcmp.bloomberg.com
Other
866ms
91 KB
68%
$11/mo
Costly
assets.bwbx.io
assets.bwbx.io
Other
807ms
324 KB
44%
$11/mo
Costly
assets.bwbx.io
assets.bwbx.io
Other
594ms
4 KB
—
$8/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
413ms
188 KB
75%
$5/mo
Costly
sourcepointcmp.bloomberg.com
sourcepointcmp.bloomberg.com
Other
410ms
42 KB
—
$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
386ms
161 KB
47%
$5/mo
Costly
js-agent.newrelic.com
js-agent.newrelic.com
Other
296ms
30 KB
—
$4/mo
Costly
sourcepointcmp.bloomberg.com
sourcepointcmp.bloomberg.com
Other
264ms
42 KB
51%
$4/mo
Costly
cdn.lgrckt-in.com
cdn.lgrckt-in.com
Other
242ms
124 KB
35%
$3/mo
Costly
assets.bwbx.io
assets.bwbx.io
Other
230ms
36 KB
—
$3/mo
Costly
assets.bwbx.io
assets.bwbx.io
Other
201ms
68 KB
46%
$3/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
152ms
34 KB
—
$2/mo
Optional
pub.doubleverify.com
pub.doubleverify.com
Other
146ms
31 KB
—
$2/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
144ms
2 KB
—
$2/mo
Optional
sourcepointcmp.bloomberg.com
sourcepointcmp.bloomberg.com
Other
91ms
29 KB
—
$1/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
86ms
27 KB
—
$1/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
86ms
136 KB
94%
$1/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
77ms
29 KB
—
$1/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
72ms
15 KB
—
$1/mo
Optional
assets.bwbx.io
assets.bwbx.io
Other
51ms
88 KB
76%
$1/mo
Optional
Unattributable
Other
Costly
Execution2688ms
Transfer0 KB
Monthly Cost$36/mo
www.bloomberg.com
Other
Costly
Execution2467ms
Transfer525 KB
Monthly Cost$33/mo
assets.bwbx.io
Other
Costly
Execution1521ms
Transfer42 KB
Monthly Cost$20/mo
Google Tag Manager
Tag Manager
Costly
Execution1481ms
Transfer212 KB
Unused26%
Monthly Cost$20/mo
sourcepointcmp.bloomberg.com
Other
Costly
Execution866ms
Transfer91 KB
Unused68%
Monthly Cost$11/mo
assets.bwbx.io
Other
Costly
Execution807ms
Transfer324 KB
Unused44%
Monthly Cost$11/mo
assets.bwbx.io
Other
Costly
Execution594ms
Transfer4 KB
Monthly Cost$8/mo
securepubads.g.doubleclick.net
Other
Costly
Execution413ms
Transfer188 KB
Unused75%
Monthly Cost$5/mo
sourcepointcmp.bloomberg.com
Other
Costly
Execution410ms
Transfer42 KB
Monthly Cost$5/mo
Google Tag Manager
Tag Manager
Costly
Execution386ms
Transfer161 KB
Unused47%
Monthly Cost$5/mo
js-agent.newrelic.com
Other
Costly
Execution296ms
Transfer30 KB
Monthly Cost$4/mo
sourcepointcmp.bloomberg.com
Other
Costly
Execution264ms
Transfer42 KB
Unused51%
Monthly Cost$4/mo
cdn.lgrckt-in.com
Other
Costly
Execution242ms
Transfer124 KB
Unused35%
Monthly Cost$3/mo
assets.bwbx.io
Other
Costly
Execution230ms
Transfer36 KB
Monthly Cost$3/mo
assets.bwbx.io
Other
Costly
Execution201ms
Transfer68 KB
Unused46%
Monthly Cost$3/mo
securepubads.g.doubleclick.net
Other
Optional
Execution152ms
Transfer34 KB
Monthly Cost$2/mo
pub.doubleverify.com
Other
Optional
Execution146ms
Transfer31 KB
Monthly Cost$2/mo
assets.bwbx.io
Other
Optional
Execution144ms
Transfer2 KB
Monthly Cost$2/mo
sourcepointcmp.bloomberg.com
Other
Optional
Execution91ms
Transfer29 KB
Monthly Cost$1/mo
assets.bwbx.io
Other
Optional
Execution86ms
Transfer27 KB
Monthly Cost$1/mo
assets.bwbx.io
Other
Optional
Execution86ms
Transfer136 KB
Unused94%
Monthly Cost$1/mo
assets.bwbx.io
Other
Optional
Execution77ms
Transfer29 KB
Monthly Cost$1/mo
assets.bwbx.io
Other
Optional
Execution72ms
Transfer15 KB
Monthly Cost$1/mo
assets.bwbx.io
Other
Optional
Execution51ms
Transfer88 KB
Unused76%
Monthly Cost$1/mo
These scripts may cost more than they're worth
Unattributable adds 2688ms and costs ~$36/month
www.bloomberg.com adds 2467ms and costs ~$33/month
assets.bwbx.io adds 1521ms and costs ~$20/month
Google Tag Manager adds 1481ms and costs ~$20/month
sourcepointcmp.bloomberg.com adds 866ms and costs ~$11/month
assets.bwbx.io adds 807ms and costs ~$11/month
assets.bwbx.io adds 594ms and costs ~$8/month
securepubads.g.doubleclick.net adds 413ms and costs ~$5/month
sourcepointcmp.bloomberg.com adds 410ms and costs ~$5/month
Google Tag Manager adds 386ms and costs ~$5/month
js-agent.newrelic.com adds 296ms and costs ~$4/month
sourcepointcmp.bloomberg.com adds 264ms and costs ~$4/month
cdn.lgrckt-in.com adds 242ms and costs ~$3/month
assets.bwbx.io adds 230ms and costs ~$3/month
assets.bwbx.io adds 201ms and costs ~$3/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
Unattributable takes 2688ms 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.bloomberg.com takes 2467ms 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.bwbx.io takes 1521ms 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 1481ms 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
sourcepointcmp.bloomberg.com takes 866ms 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
68% of sourcepointcmp.bloomberg.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
assets.bwbx.io takes 807ms 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.bwbx.io takes 594ms 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
securepubads.g.doubleclick.net takes 413ms 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
75% 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
sourcepointcmp.bloomberg.com takes 410ms 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 386ms 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 296ms 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
sourcepointcmp.bloomberg.com takes 264ms 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 sourcepointcmp.bloomberg.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
cdn.lgrckt-in.com takes 242ms 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.bwbx.io takes 230ms 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.bwbx.io takes 201ms 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
94% of assets.bwbx.io'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
76% of assets.bwbx.io'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.