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
44 images, 0 KB saveable
REVIEW
44 images, 0 KB saveable
Warning::
!
https://media.wired.com/photos/69dd8fff41310264a14... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d9286567ec9ebaea2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d6926e086e0b26082... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dfbe4967d3fd19de3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69deb8f5fa20dbfacc2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dea084bbe4a9ff56b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69de61accc421083636... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d5747914cc7e3430d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/6995f4e36d0b5a054ae... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/6942c596ccb20d7f662... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69de82bee716e713708... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69cd64e418a74289dad... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/5c1c75ed59e96b0db45... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/63517ff717fba1b3a9d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69debc4d4d898774bc7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dd3923d295d33b0cb... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d5729e948761f395b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69cec0fd316700facf3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/6984c757373aa7c9b06... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/6451677ceb3f06fa814... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d681be0aa0c0c6d4d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d6f6552ce2d8ce963... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69c138458ee963c6c9d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.wired.com/verso/static/wired-us/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dd3c751720dda876a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/686729e7c3e228b3598... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/62cc3e03e0140c38a4e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dfb6527e53dbff73e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69df1b43d64f8f9661d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/685f10e6472f227b69c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d56806948761f395b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69d585fca17189a9bfd... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/696bb6f2b0c775c788d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69decbf74d898774bc7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dec7e359777aa7419... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69c342b9ea56e672b4e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69cd244228d35b2c1df... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69c5c6fcd03999521bd... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/59cacaede7a72536045... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/68a91d240ff15a77d5c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
44images15.4 MB
0oversized-0 KB
5legacy format
41missing 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
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
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
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
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
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
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
Performance issues directly impact user engagement and conversion rates.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
12 fonts (342 KB)
PASS
12 fonts (342 KB)
Info::
i
12 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
12
342 KB total
Render-blocking
0
of 12
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
BreveText-Book.woff2woff2swap
Size31 KB
Load time34 ms
Start485 ms
RiskFOUT — text flashes from fallback to web font
WiredMono-Regular.woff2woff2swap
Size19 KB
Load time40 ms
Start486 ms
RiskFOUT — text flashes from fallback to web font
Apercu-Bold-Pro.woff2woff2swap
Size46 KB
Load time52 ms
Start486 ms
RiskFOUT — text flashes from fallback to web font
Apercu-Regular-Pro.woff2woff2swap
Size47 KB
Load time53 ms
Start486 ms
RiskFOUT — text flashes from fallback to web font
WiredMono-Bold.woff2woff2swap
Size19 KB
Load time62 ms
Start486 ms
RiskFOUT — text flashes from fallback to web font
Apercu-BoldItalic.woff2woff2swap
Size25 KB
Load time46 ms
Start487 ms
RiskFOUT — text flashes from fallback to web font
ProximaNova-Regular.woff2woff2swap
Size21 KB
Load time53 ms
Start487 ms
RiskFOUT — text flashes from fallback to web font
ProximaNova-RegularItal...woff2swap
Size21 KB
Load time62 ms
Start488 ms
RiskFOUT — text flashes from fallback to web font
WiredDisplay-BoldConden...woff2swap
Size25 KB
Load time70 ms
Start488 ms
RiskFOUT — text flashes from fallback to web font
WiredDisplay-BoldConden...woff2swap
Size27 KB
Load time67 ms
Start489 ms
RiskFOUT — text flashes from fallback to web font
BreveText-BookItalic.woff2woff2swap
Size31 KB
Load time70 ms
Start489 ms
RiskFOUT — text flashes from fallback to web font
sf-ui-display-medium-we...woff2swap
Size30 KB
Load time337 ms
Start3.0 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
Network Waterfall
147 requests over 3715ms
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-party2692ms · 1964KB · $46/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.wired.com
www.wired.com
Other
523ms
330 KB
49%
$9/mo
Costly
www.wired.com
www.wired.com
Other
452ms
171 KB
—
$8/mo
Costly
Unattributable
Unattributable
Other
390ms
0 KB
—
$7/mo
Costly
www.wired.com
www.wired.com
Other
388ms
32 KB
—
$7/mo
Costly
imasdk.googleapis.com
imasdk.googleapis.com
Other
207ms
38 KB
55%
$4/mo
Costly
player-frontend.cnevids.com
player-frontend.cnevids.com
Other
179ms
255 KB
48%
$3/mo
Optional
privacy.condenastdigital.com
privacy.condenastdigital.com
Other
143ms
198 KB
—
$2/mo
Optional
www.wired.com
www.wired.com
Other
123ms
67 KB
—
$2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
92ms
204 KB
35%
$2/mo
Optional
www.wired.com
www.wired.com
Other
84ms
481 KB
50%
$1/mo
Optional
www.wired.com
www.wired.com
Other
58ms
0 KB
—
$1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
53ms
188 KB
76%
$1/mo
Optional
www.wired.com
Other
Costly
Execution523ms
Transfer330 KB
Unused49%
Monthly Cost$9/mo
www.wired.com
Other
Costly
Execution452ms
Transfer171 KB
Monthly Cost$8/mo
Unattributable
Other
Costly
Execution390ms
Transfer0 KB
Monthly Cost$7/mo
www.wired.com
Other
Costly
Execution388ms
Transfer32 KB
Monthly Cost$7/mo
imasdk.googleapis.com
Other
Costly
Execution207ms
Transfer38 KB
Unused55%
Monthly Cost$4/mo
player-frontend.cnevids.com
Other
Optional
Execution179ms
Transfer255 KB
Unused48%
Monthly Cost$3/mo
privacy.condenastdigital.com
Other
Optional
Execution143ms
Transfer198 KB
Monthly Cost$2/mo
www.wired.com
Other
Optional
Execution123ms
Transfer67 KB
Monthly Cost$2/mo
Google Tag Manager
Tag Manager
Optional
Execution92ms
Transfer204 KB
Unused35%
Monthly Cost$2/mo
www.wired.com
Other
Optional
Execution84ms
Transfer481 KB
Unused50%
Monthly Cost$1/mo
www.wired.com
Other
Optional
Execution58ms
Transfer0 KB
Monthly Cost$1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution53ms
Transfer188 KB
Unused76%
Monthly Cost$1/mo
These scripts may cost more than they're worth
www.wired.com adds 523ms and costs ~$9/month
www.wired.com adds 452ms and costs ~$8/month
Unattributable adds 390ms and costs ~$7/month
www.wired.com adds 388ms and costs ~$7/month
imasdk.googleapis.com adds 207ms 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.wired.com takes 523ms 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.wired.com takes 452ms 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 390ms 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.wired.com takes 388ms 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
imasdk.googleapis.com takes 207ms 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
55% of imasdk.googleapis.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
50% of www.wired.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
76% 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.
375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s