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
47 images, 0 KB saveable
REVIEW
47 images, 0 KB saveable
Warning::
!
https://media.wired.com/photos/69e1650c3768d90cb0b... 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/69e752c0ce5cfb00db6... 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/5c1c75ed59e96b0db45... 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/69e6859a62260009d00... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e67707d27252207be... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69dd05f668f51d0b7f4... 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/69dd573d3001957d4f6... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e0e57f3af2e04b54b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e21ced5bbca1ee221... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69cffdb3640c23d3efe... 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/69d99028b8bdc021bda... 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/69e00f87b4a75597c04... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/68f838f9ca694516647... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e65b71f528da8438c... 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/69e295a92e2d64bf927... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69de96afb083bab80be... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e6d5973e9c0983de8... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e6d358d29b04dda3e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/654271e660c83bd9a94... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e15d364605cb6e7cb... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e6dccf9c8b9ae166e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e668fcab15b90f6c6... 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/696bb6f2b0c775c788d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e2911f84b3ab6f42a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e6b3bd8d2fd342f27... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e66df4d29b04dda3e... 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/69e17bf83768d90cb0b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e64d98627d0e0d48a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e667f1c6b38abb04c... 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/69c138458ee963c6c9d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.wired.com/photos/69e012ba1dd3a88684d... 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/69cd244228d35b2c1df... 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/6984c757373aa7c9b06... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
47images30.3 MB
0oversized-0 KB
7legacy format
45missing 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
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
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
11 fonts (313 KB)
PASS
11 fonts (313 KB)
Info::
i
11 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
11
313 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
BreveText-Book.woff2woff2swap
Size31 KB
Load time33 ms
Start491 ms
RiskFOUT — text flashes from fallback to web font
WiredMono-Regular.woff2woff2swap
Size19 KB
Load time32 ms
Start492 ms
RiskFOUT — text flashes from fallback to web font
Apercu-Bold-Pro.woff2woff2swap
Size46 KB
Load time54 ms
Start492 ms
RiskFOUT — text flashes from fallback to web font
Apercu-Regular-Pro.woff2woff2swap
Size47 KB
Load time54 ms
Start493 ms
RiskFOUT — text flashes from fallback to web font
WiredMono-Bold.woff2woff2swap
Size19 KB
Load time54 ms
Start493 ms
RiskFOUT — text flashes from fallback to web font
Apercu-BoldItalic.woff2woff2swap
Size25 KB
Load time53 ms
Start494 ms
RiskFOUT — text flashes from fallback to web font
ProximaNova-Regular.woff2woff2swap
Size21 KB
Load time55 ms
Start494 ms
RiskFOUT — text flashes from fallback to web font
ProximaNova-RegularItal...woff2swap
Size21 KB
Load time60 ms
Start494 ms
RiskFOUT — text flashes from fallback to web font
WiredDisplay-BoldConden...woff2swap
Size25 KB
Load time56 ms
Start498 ms
RiskFOUT — text flashes from fallback to web font
WiredDisplay-BoldConden...woff2swap
Size27 KB
Load time56 ms
Start499 ms
RiskFOUT — text flashes from fallback to web font
BreveText-BookItalic.woff2woff2swap
Size31 KB
Load time57 ms
Start499 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
Network Waterfall
128 requests over 3549ms
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-party2254ms · 1471KB · £33/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.wired.com
www.wired.com
Other
506ms
297 KB
49%
£8/mo
Costly
www.wired.com
www.wired.com
Other
408ms
32 KB
—
£6/mo
Costly
www.wired.com
www.wired.com
Other
402ms
168 KB
—
£6/mo
Costly
Unattributable
Unattributable
Other
352ms
0 KB
—
£5/mo
Costly
www.wired.com
www.wired.com
Other
150ms
64 KB
—
£2/mo
Optional
privacy.condenastdigital.com
privacy.condenastdigital.com
Other
104ms
199 KB
—
£2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
90ms
204 KB
35%
£1/mo
Optional
www.wired.com
www.wired.com
Other
88ms
0 KB
—
£1/mo
Optional
www.wired.com
www.wired.com
Other
78ms
481 KB
50%
£1/mo
Optional
globalservices.conde.digital
globalservices.conde.digital
Other
77ms
26 KB
—
£1/mo
Optional
www.wired.com
Other
Costly
Execution506ms
Transfer297 KB
Unused49%
Monthly Cost£8/mo
www.wired.com
Other
Costly
Execution408ms
Transfer32 KB
Monthly Cost£6/mo
www.wired.com
Other
Costly
Execution402ms
Transfer168 KB
Monthly Cost£6/mo
Unattributable
Other
Costly
Execution352ms
Transfer0 KB
Monthly Cost£5/mo
www.wired.com
Other
Optional
Execution150ms
Transfer64 KB
Monthly Cost£2/mo
privacy.condenastdigital.com
Other
Optional
Execution104ms
Transfer199 KB
Monthly Cost£2/mo
Google Tag Manager
Tag Manager
Optional
Execution90ms
Transfer204 KB
Unused35%
Monthly Cost£1/mo
www.wired.com
Other
Optional
Execution88ms
Transfer0 KB
Monthly Cost£1/mo
www.wired.com
Other
Optional
Execution78ms
Transfer481 KB
Unused50%
Monthly Cost£1/mo
globalservices.conde.digital
Other
Optional
Execution77ms
Transfer26 KB
Monthly Cost£1/mo
These scripts may cost more than they're worth
www.wired.com adds 506ms and costs ~£8/month
www.wired.com adds 408ms and costs ~£6/month
www.wired.com adds 402ms and costs ~£6/month
Unattributable adds 352ms and costs ~£5/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 506ms 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 408ms 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 402ms 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 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
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.
375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s