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
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Warning::
!
https://www.pwc.com/us/en/library/case-studies/ass... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pwc.com/gx/en/ceo-survey/2026/ceo-surv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
28images620 KB
0oversized-0 KB
24legacy format
2missing 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
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
4 fonts (292 KB)
PASS
4 fonts (292 KB)
Info::
i
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
292 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
08b57253-2e0d-4c12-9c57...woff2swap
Size13 KB
Load time66 ms
Start286 ms
RiskFOUT — text flashes from fallback to web font
6f7f55b5-d511-474f-9652...woff2swap
Size224 KB
Load time31 ms
Start451 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
800da3b0-675f-465f-892d...woff2swap
Size13 KB
Load time37 ms
Start452 ms
RiskFOUT — text flashes from fallback to web font
HelveticaNeueLTW05-45Li...woff2swap
Size41 KB
Load time32 ms
Start452 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 ~112 KB and ~224 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
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
96 requests over 3491ms
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-party6825ms · 1393KB · $118/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1636ms
0 KB
—
$28/mo
Costly
www.pwc.com
www.pwc.com
Other
1276ms
32 KB
—
$22/mo
Costly
www.pwc.com
www.pwc.com
Other
871ms
156 KB
21%
$15/mo
Costly
assets.adobedtm.com
assets.adobedtm.com
Other
581ms
127 KB
16%
$10/mo
Costly
www.pwc.com
www.pwc.com
Other
528ms
222 KB
—
$9/mo
Costly
www.pwc.com
www.pwc.com
Other
364ms
2 KB
—
$6/mo
Costly
www.pwc.com
www.pwc.com
Other
352ms
362 KB
86%
$6/mo
Costly
OneTrust
cdn.cookielaw.org
Consent
339ms
130 KB
53%
$6/mo
Essential
www.pwc.com
www.pwc.com
Other
253ms
135 KB
72%
$4/mo
Costly
s.go-mpulse.net
s.go-mpulse.net
Other
233ms
46 KB
—
$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
136ms
147 KB
42%
$2/mo
Optional
www.pwc.com
www.pwc.com
Other
99ms
32 KB
72%
$2/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
88ms
1 KB
—
$2/mo
Essential
www.pwc.com
www.pwc.com
Other
69ms
1 KB
—
$1/mo
Optional
Unattributable
Other
Costly
Execution1636ms
Transfer0 KB
Monthly Cost$28/mo
www.pwc.com
Other
Costly
Execution1276ms
Transfer32 KB
Monthly Cost$22/mo
www.pwc.com
Other
Costly
Execution871ms
Transfer156 KB
Unused21%
Monthly Cost$15/mo
assets.adobedtm.com
Other
Costly
Execution581ms
Transfer127 KB
Unused16%
Monthly Cost$10/mo
www.pwc.com
Other
Costly
Execution528ms
Transfer222 KB
Monthly Cost$9/mo
www.pwc.com
Other
Costly
Execution364ms
Transfer2 KB
Monthly Cost$6/mo
www.pwc.com
Other
Costly
Execution352ms
Transfer362 KB
Unused86%
Monthly Cost$6/mo
OneTrust
Consent
Essential
Execution339ms
Transfer130 KB
Unused53%
Monthly Cost$6/mo
www.pwc.com
Other
Costly
Execution253ms
Transfer135 KB
Unused72%
Monthly Cost$4/mo
s.go-mpulse.net
Other
Costly
Execution233ms
Transfer46 KB
Monthly Cost$4/mo
Google Tag Manager
Tag Manager
Optional
Execution136ms
Transfer147 KB
Unused42%
Monthly Cost$2/mo
www.pwc.com
Other
Optional
Execution99ms
Transfer32 KB
Unused72%
Monthly Cost$2/mo
OneTrust
Consent
Essential
Execution88ms
Transfer1 KB
Monthly Cost$2/mo
www.pwc.com
Other
Optional
Execution69ms
Transfer1 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
Unattributable adds 1636ms and costs ~$28/month
www.pwc.com adds 1276ms and costs ~$22/month
www.pwc.com adds 871ms and costs ~$15/month
assets.adobedtm.com adds 581ms and costs ~$10/month
www.pwc.com adds 528ms and costs ~$9/month
www.pwc.com adds 364ms and costs ~$6/month
www.pwc.com adds 352ms and costs ~$6/month
www.pwc.com adds 253ms and costs ~$4/month
s.go-mpulse.net adds 233ms 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
Unattributable takes 1636ms 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.pwc.com takes 1276ms 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.pwc.com takes 871ms 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 581ms 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.pwc.com takes 528ms 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.pwc.com takes 364ms 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.pwc.com takes 352ms 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
86% of www.pwc.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
53% 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
www.pwc.com takes 253ms 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 www.pwc.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
s.go-mpulse.net takes 233ms 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 www.pwc.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.