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
59 images, 0 KB saveable
REVIEW
59 images, 0 KB saveable
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://s3.us-east-1.amazonaws.com/static-q.simila... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://s3.us-east-1.amazonaws.com/static-q.simila... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static-us-east-1.similarcdn.com/build/2026... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
59images7.7 MB
0oversized-0 KB
52legacy format
39missing 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
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
2 fonts (73 KB)
PASS
2 fonts (73 KB)
Info::
i
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
73 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
rP2Yp2ywxg089UriI5-g4vl...woff2swap
Size36 KB
Load time57 ms
Start1.5 s
RiskFOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size37 KB
Load time56 ms
Start1.5 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
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
134 requests over 6828ms
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-party8750ms · 2752KB · $116/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
static-us-east-1.similarcdn.com
static-us-east-1.similarcdn.com
Other
2292ms
428 KB
51%
$30/mo
Costly
www.similarweb.com
www.similarweb.com
Other
897ms
233 KB
—
$12/mo
Costly
7ef1a1ef43ff.edge.sdk.awswaf.com
7ef1a1ef43ff.edge.sdk.awswaf.com
Other
844ms
501 KB
51%
$11/mo
Costly
Unattributable
Unattributable
Other
756ms
0 KB
—
$10/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
610ms
131 KB
47%
$8/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
551ms
121 KB
22%
$7/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
476ms
178 KB
34%
$6/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
335ms
164 KB
39%
$4/mo
Costly
Microsoft Clarity
scripts.clarity.ms
Session Replay
259ms
25 KB
—
$3/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
254ms
145 KB
45%
$3/mo
Costly
cdn.userway.org
cdn.userway.org
Other
253ms
48 KB
56%
$3/mo
Costly
accounts.google.com
accounts.google.com
Other
218ms
96 KB
83%
$3/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
177ms
36 KB
63%
$2/mo
Optional
js.qualified.com
js.qualified.com
Other
170ms
117 KB
53%
$2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
160ms
145 KB
44%
$2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
141ms
145 KB
45%
$2/mo
Optional
static-us-east-1.similarcdn.com
static-us-east-1.similarcdn.com
Other
139ms
40 KB
—
$2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
136ms
144 KB
45%
$2/mo
Optional
static-us-east-1.similarcdn.com
static-us-east-1.similarcdn.com
Other
82ms
56 KB
55%
$1/mo
Optional
static-us-east-1.similarcdn.com
Other
Costly
Execution2292ms
Transfer428 KB
Unused51%
Monthly Cost$30/mo
www.similarweb.com
Other
Costly
Execution897ms
Transfer233 KB
Monthly Cost$12/mo
7ef1a1ef43ff.edge.sdk.awswaf.com
Other
Costly
Execution844ms
Transfer501 KB
Unused51%
Monthly Cost$11/mo
Unattributable
Other
Costly
Execution756ms
Transfer0 KB
Monthly Cost$10/mo
Google Tag Manager
Tag Manager
Costly
Execution610ms
Transfer131 KB
Unused47%
Monthly Cost$8/mo
consent.cookiebot.com
Other
Costly
Execution551ms
Transfer121 KB
Unused22%
Monthly Cost$7/mo
Google Tag Manager
Tag Manager
Costly
Execution476ms
Transfer178 KB
Unused34%
Monthly Cost$6/mo
Google Tag Manager
Tag Manager
Costly
Execution335ms
Transfer164 KB
Unused39%
Monthly Cost$4/mo
Microsoft Clarity
Session Replay
Costly
Execution259ms
Transfer25 KB
Monthly Cost$3/mo
Google Tag Manager
Tag Manager
Costly
Execution254ms
Transfer145 KB
Unused45%
Monthly Cost$3/mo
cdn.userway.org
Other
Costly
Execution253ms
Transfer48 KB
Unused56%
Monthly Cost$3/mo
accounts.google.com
Other
Costly
Execution218ms
Transfer96 KB
Unused83%
Monthly Cost$3/mo
consent.cookiebot.com
Other
Optional
Execution177ms
Transfer36 KB
Unused63%
Monthly Cost$2/mo
js.qualified.com
Other
Optional
Execution170ms
Transfer117 KB
Unused53%
Monthly Cost$2/mo
Google Tag Manager
Tag Manager
Optional
Execution160ms
Transfer145 KB
Unused44%
Monthly Cost$2/mo
Google Tag Manager
Tag Manager
Optional
Execution141ms
Transfer145 KB
Unused45%
Monthly Cost$2/mo
static-us-east-1.similarcdn.com
Other
Optional
Execution139ms
Transfer40 KB
Monthly Cost$2/mo
Google Tag Manager
Tag Manager
Optional
Execution136ms
Transfer144 KB
Unused45%
Monthly Cost$2/mo
static-us-east-1.similarcdn.com
Other
Optional
Execution82ms
Transfer56 KB
Unused55%
Monthly Cost$1/mo
These scripts may cost more than they're worth
static-us-east-1.similarcdn.com adds 2292ms and costs ~$30/month
www.similarweb.com adds 897ms and costs ~$12/month
7ef1a1ef43ff.edge.sdk.awswaf.com adds 844ms and costs ~$11/month
Unattributable adds 756ms and costs ~$10/month
Google Tag Manager adds 610ms and costs ~$8/month
consent.cookiebot.com adds 551ms and costs ~$7/month
Google Tag Manager adds 476ms and costs ~$6/month
Google Tag Manager adds 335ms and costs ~$4/month
Microsoft Clarity adds 259ms and costs ~$3/month
Google Tag Manager adds 254ms and costs ~$3/month
cdn.userway.org adds 253ms and costs ~$3/month
accounts.google.com adds 218ms and costs ~$3/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
static-us-east-1.similarcdn.com takes 2292ms 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
51% of static-us-east-1.similarcdn.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
www.similarweb.com takes 897ms 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
7ef1a1ef43ff.edge.sdk.awswaf.com takes 844ms 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
51% of 7ef1a1ef43ff.edge.sdk.awswaf.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
Unattributable takes 756ms 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
Google Tag Manager takes 610ms 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
consent.cookiebot.com takes 551ms 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
Google Tag Manager takes 476ms 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
Google Tag Manager takes 335ms 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
Microsoft Clarity takes 259ms 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
Google Tag Manager takes 254ms 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
cdn.userway.org 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
56% of cdn.userway.org'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
accounts.google.com takes 218ms 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
83% of accounts.google.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 consent.cookiebot.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 js.qualified.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
55% of static-us-east-1.similarcdn.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.
416 ms
832 ms
1.7 s
2.9 s
3.3 s