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
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
!
https://media.self.com/photos/620d87c0b11eb4dbc7d4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69dfc1e76fa63b2195f4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69e65412ddde6a7c7e2e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69e277d38cac587a71d2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69e2670ee1eb8028bd5e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69dfaf586df9ad711fbc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/663ce9bfd3625ba64a30... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/65d7c1e340607b9f89b6... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69c6cb60ce5ed43bca42... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69b2ea8817cff83dfa88... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.self.com/verso/static/self-us/assets/l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69d68ed1becc36e3b66a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://dwgyu36up6iuz.cloudfront.net/heru80fdn/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69d7e4b47b649227e349... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69cc160fad83eed8181e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69c447b38be1bff32997... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.self.com/verso/static/self-us/assets/l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69dd51aad0672e7b0b31... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69dffca80ac8438bb11a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://dwgyu36up6iuz.cloudfront.net/heru80fdn/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69c548d8b928b39f8e39... 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.self.com/photos/69e4f8745294d886f765... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69e27daa07a20fa771d0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/69cd785ced1a7c56ede7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/65d7c1e0239c31905bb2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://media.self.com/photos/6813a71b10004ac0c9dd... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27images1.6 MB
0oversized-0 KB
4legacy format
27missing 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
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
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
6 fonts (187 KB)
PASS
6 fonts (187 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
187 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
GTSectra-Book.woff2woff2swap
Size81 KB
Load time53 ms
Start520 ms
RiskFOUT — text flashes from fallback to web font
izmir-extrabold-webfont...woff2swap
Size23 KB
Load time16 ms
Start521 ms
RiskFOUT — text flashes from fallback to web font
izmir-bold-webfont.woff2woff2swap
Size21 KB
Load time51 ms
Start521 ms
RiskFOUT — text flashes from fallback to web font
izmir-regular-webfont.w...woff2swap
Size20 KB
Load time51 ms
Start521 ms
RiskFOUT — text flashes from fallback to web font
izmir-semibold-webfont....woff2swap
Size20 KB
Load time52 ms
Start521 ms
RiskFOUT — text flashes from fallback to web font
izmir-regular-italic-we...woff2swap
Size21 KB
Load time49 ms
Start522 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
84 requests over 3304ms
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-party2164ms · 1555KB · $37/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.self.com
www.self.com
Other
671ms
296 KB
50%
$12/mo
Costly
www.self.com
www.self.com
Other
465ms
32 KB
—
$8/mo
Costly
www.self.com
www.self.com
Other
316ms
137 KB
—
$5/mo
Costly
privacy.condenastdigital.com
privacy.condenastdigital.com
Other
194ms
199 KB
—
$3/mo
Optional
Unattributable
Unattributable
Other
154ms
0 KB
—
$3/mo
Optional
www.self.com
www.self.com
Other
145ms
481 KB
49%
$3/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
88ms
178 KB
41%
$2/mo
Optional
www.self.com
www.self.com
Other
72ms
45 KB
53%
$1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
59ms
188 KB
76%
$1/mo
Optional
www.self.com
Other
Costly
Execution671ms
Transfer296 KB
Unused50%
Monthly Cost$12/mo
www.self.com
Other
Costly
Execution465ms
Transfer32 KB
Monthly Cost$8/mo
www.self.com
Other
Costly
Execution316ms
Transfer137 KB
Monthly Cost$5/mo
privacy.condenastdigital.com
Other
Optional
Execution194ms
Transfer199 KB
Monthly Cost$3/mo
Unattributable
Other
Optional
Execution154ms
Transfer0 KB
Monthly Cost$3/mo
www.self.com
Other
Optional
Execution145ms
Transfer481 KB
Unused49%
Monthly Cost$3/mo
Google Tag Manager
Tag Manager
Optional
Execution88ms
Transfer178 KB
Unused41%
Monthly Cost$2/mo
www.self.com
Other
Optional
Execution72ms
Transfer45 KB
Unused53%
Monthly Cost$1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution59ms
Transfer188 KB
Unused76%
Monthly Cost$1/mo
These scripts may cost more than they're worth
www.self.com adds 671ms and costs ~$12/month
www.self.com adds 465ms and costs ~$8/month
www.self.com adds 316ms 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.self.com takes 671ms 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.self.com takes 465ms 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.self.com takes 316ms 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
53% of www.self.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.