Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
B
HTTP Caching
max-age=0, must-revalidate, private
REVIEW
max-age=0, must-revalidate, private
Info::
✓
Cache-Control header is set
Got: max-age=0, must-revalidate, private
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
max-age=0, must-revalidate, private
Directive
Value
Meaning
max-age
0
Cache for 0 seconds
must-revalidate
—
Must recheck with server after expiry
private
—
Only browser cache, not CDN/proxy
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 (122 KB)
PASS
4 fonts (122 KB)
Info::
i
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
122 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
inter-v3-latin-700.8b80...woff2swap
Size18 KB
Load time24 ms
Start203 ms
RiskFOUT — text flashes from fallback to web font
HelveticaNowText-Regula...woff2swap
Size35 KB
Load time25 ms
Start203 ms
RiskFOUT — text flashes from fallback to web font
HelveticaNowText-Medium...woff2swap
Size37 KB
Load time28 ms
Start204 ms
RiskFOUT — text flashes from fallback to web font
NewParisText-Book.62ee3...woff2swap
Size32 KB
Load time31 ms
Start205 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
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—
prefetch
1
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
116 requests over 2730ms
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-party5827ms · 933KB · $109/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1502ms
0 KB
—
$28/mo
Costly
www.harpersbazaar.com
www.harpersbazaar.com
Other
863ms
117 KB
—
$16/mo
Costly
www.harpersbazaar.com
www.harpersbazaar.com
Other
815ms
7 KB
—
$15/mo
Costly
www.harpersbazaar.com
www.harpersbazaar.com
Other
759ms
14 KB
—
$14/mo
Costly
www.harpersbazaar.com
www.harpersbazaar.com
Other
384ms
9 KB
—
$7/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
190ms
188 KB
75%
$4/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
183ms
129 KB
57%
$3/mo
Essential
www.harpersbazaar.com
www.harpersbazaar.com
Other
168ms
108 KB
79%
$3/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
144ms
5 KB
—
$3/mo
Optional
c.amazon-adsystem.com
c.amazon-adsystem.com
Other
116ms
91 KB
63%
$2/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
99ms
7 KB
—
$2/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
94ms
42 KB
56%
$2/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
83ms
9 KB
—
$2/mo
Essential
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
82ms
34 KB
—
$2/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
79ms
58 KB
77%
$1/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
79ms
43 KB
56%
$1/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
70ms
2 KB
—
$1/mo
Optional
nexus.ensighten.com
nexus.ensighten.com
Other
58ms
19 KB
—
$1/mo
Optional
www.harpersbazaar.com
www.harpersbazaar.com
Other
57ms
53 KB
89%
$1/mo
Optional
Unattributable
Other
Costly
Execution1502ms
Transfer0 KB
Monthly Cost$28/mo
www.harpersbazaar.com
Other
Costly
Execution863ms
Transfer117 KB
Monthly Cost$16/mo
www.harpersbazaar.com
Other
Costly
Execution815ms
Transfer7 KB
Monthly Cost$15/mo
www.harpersbazaar.com
Other
Costly
Execution759ms
Transfer14 KB
Monthly Cost$14/mo
www.harpersbazaar.com
Other
Costly
Execution384ms
Transfer9 KB
Monthly Cost$7/mo
securepubads.g.doubleclick.net
Other
Optional
Execution190ms
Transfer188 KB
Unused75%
Monthly Cost$4/mo
OneTrust
Consent
Essential
Execution183ms
Transfer129 KB
Unused57%
Monthly Cost$3/mo
www.harpersbazaar.com
Other
Optional
Execution168ms
Transfer108 KB
Unused79%
Monthly Cost$3/mo
www.harpersbazaar.com
Other
Optional
Execution144ms
Transfer5 KB
Monthly Cost$3/mo
c.amazon-adsystem.com
Other
Optional
Execution116ms
Transfer91 KB
Unused63%
Monthly Cost$2/mo
www.harpersbazaar.com
Other
Optional
Execution99ms
Transfer7 KB
Monthly Cost$2/mo
www.harpersbazaar.com
Other
Optional
Execution94ms
Transfer42 KB
Unused56%
Monthly Cost$2/mo
OneTrust
Consent
Essential
Execution83ms
Transfer9 KB
Monthly Cost$2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution82ms
Transfer34 KB
Monthly Cost$2/mo
www.harpersbazaar.com
Other
Optional
Execution79ms
Transfer58 KB
Unused77%
Monthly Cost$1/mo
www.harpersbazaar.com
Other
Optional
Execution79ms
Transfer43 KB
Unused56%
Monthly Cost$1/mo
www.harpersbazaar.com
Other
Optional
Execution70ms
Transfer2 KB
Monthly Cost$1/mo
nexus.ensighten.com
Other
Optional
Execution58ms
Transfer19 KB
Monthly Cost$1/mo
www.harpersbazaar.com
Other
Optional
Execution57ms
Transfer53 KB
Unused89%
Monthly Cost$1/mo
These scripts may cost more than they're worth
Unattributable adds 1502ms and costs ~$28/month
www.harpersbazaar.com adds 863ms and costs ~$16/month
www.harpersbazaar.com adds 815ms and costs ~$15/month
www.harpersbazaar.com adds 759ms and costs ~$14/month
www.harpersbazaar.com adds 384ms and costs ~$7/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 1502ms 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.harpersbazaar.com takes 863ms 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.harpersbazaar.com takes 815ms 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.harpersbazaar.com takes 759ms 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.harpersbazaar.com takes 384ms 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
57% 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
79% of www.harpersbazaar.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
63% of c.amazon-adsystem.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
56% of www.harpersbazaar.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
77% of www.harpersbazaar.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
56% of www.harpersbazaar.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
89% of www.harpersbazaar.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.