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
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Warning::
!
https://distrokid.com/images/blob-mockups.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/tidal-logo-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/tiktok-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/youtube-log... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/icons/feature-ico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/spotify-log... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/apple-music... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/distrokid-logo-white-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/amazon-musi... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/iheart-radi... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/google-sign-in-icon.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/instagram-l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/deezer-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/icons/feature-ico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/icons/feature-ico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/icons/feature-ico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/testimonials-new/test... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/logos/pandora-log... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/res/images/icons/feature-ico... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://distrokid.com/images/apple-sign-in-icon-wh... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
38images1.0 MB
0oversized-0 KB
9legacy format
34missing 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
A
Third-Party Impact
39% third-party, 0 ms blocking
PASS
39% third-party, 0 ms blocking
Info::
i
Third-party code accounts for 39% of page weight (1.3 MiB of 3.3 MiB)
Info::
✓
Third-party blocking time is low (0 ms)
61%
39%
First-party Third-party
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
7 fonts (626 KB)
PASS
7 fonts (626 KB)
Info::
i
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
626 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
UcC73FwrK3iLTeHuS_fvQtM...woff2swap
Size46 KB
Load time18 ms
Start841 ms
RiskFOUT — text flashes from fallback to web font
S6uyw4BMUTPHjx4wXiWtFCc...woff2swap
Size14 KB
Load time8 ms
Start841 ms
RiskFOUT — text flashes from fallback to web font
S6u9w4BMUTPHh6UVSwiPGQ3...woff2swap
Size14 KB
Load time11 ms
Start842 ms
RiskFOUT — text flashes from fallback to web font
fontawesome-webfont.woff2woff2swap
Size76 KB
Load time25 ms
Start842 ms
RiskFOUT — text flashes from fallback to web font
S6u9w4BMUTPHh7USSwiPGQ3...woff2swap
Size14 KB
Load time15 ms
Start842 ms
RiskFOUT — text flashes from fallback to web font
fa-brands-400.woff2woff2swap
Size117 KB
Load time23 ms
Start843 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-solid-900.woff2woff2swap
Size347 KB
Load time24 ms
Start915 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~232 KB and ~464 ms
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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall
132 requests over 3253ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
84%of JavaScript execution is third-party
First-party Third-party6821ms · 1224KB · $91/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1571ms
0 KB
—
$21/mo
Costly
Optimizely
cdn.optimizely.com
A/B Testing
1131ms
117 KB
33%
$15/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
955ms
177 KB
39%
$13/mo
Costly
cmp.osano.com
cmp.osano.com
Other
832ms
62 KB
—
$11/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
794ms
180 KB
36%
$11/mo
Costly
www.gstatic.com
www.gstatic.com
Other
367ms
362 KB
67%
$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
268ms
146 KB
41%
$4/mo
Costly
www.redditstatic.com
www.redditstatic.com
Other
238ms
19 KB
—
$3/mo
Costly
Segment
cdn.segment.com
Analytics
140ms
55 KB
55%
$2/mo
Optional
Segment
cdn.segment.com
Analytics
102ms
9 KB
—
$1/mo
Optional
js.adsrvr.org
js.adsrvr.org
Other
87ms
12 KB
—
$1/mo
Optional
tags.srv.stackadapt.com
tags.srv.stackadapt.com
Other
84ms
8 KB
—
$1/mo
Optional
static.cloudflareinsights.com
static.cloudflareinsights.com
Other
63ms
11 KB
—
$1/mo
Optional
Segment
cdn.segment.com
Analytics
63ms
29 KB
—
$1/mo
Optional
c.sitetran.com
c.sitetran.com
Other
63ms
26 KB
—
$1/mo
Optional
pixel.byspotify.com
pixel.byspotify.com
Other
62ms
10 KB
—
$1/mo
Optional
Unattributable
Other
Costly
Execution1571ms
Transfer0 KB
Monthly Cost$21/mo
Optimizely
A/B Testing
Costly
Execution1131ms
Transfer117 KB
Unused33%
Monthly Cost$15/mo
Google Tag Manager
Tag Manager
Costly
Execution955ms
Transfer177 KB
Unused39%
Monthly Cost$13/mo
cmp.osano.com
Other
Costly
Execution832ms
Transfer62 KB
Monthly Cost$11/mo
Google Tag Manager
Tag Manager
Costly
Execution794ms
Transfer180 KB
Unused36%
Monthly Cost$11/mo
www.gstatic.com
Other
Costly
Execution367ms
Transfer362 KB
Unused67%
Monthly Cost$5/mo
Google Tag Manager
Tag Manager
Costly
Execution268ms
Transfer146 KB
Unused41%
Monthly Cost$4/mo
www.redditstatic.com
Other
Costly
Execution238ms
Transfer19 KB
Monthly Cost$3/mo
Segment
Analytics
Optional
Execution140ms
Transfer55 KB
Unused55%
Monthly Cost$2/mo
Segment
Analytics
Optional
Execution102ms
Transfer9 KB
Monthly Cost$1/mo
js.adsrvr.org
Other
Optional
Execution87ms
Transfer12 KB
Monthly Cost$1/mo
tags.srv.stackadapt.com
Other
Optional
Execution84ms
Transfer8 KB
Monthly Cost$1/mo
static.cloudflareinsights.com
Other
Optional
Execution63ms
Transfer11 KB
Monthly Cost$1/mo
Segment
Analytics
Optional
Execution63ms
Transfer29 KB
Monthly Cost$1/mo
c.sitetran.com
Other
Optional
Execution63ms
Transfer26 KB
Monthly Cost$1/mo
pixel.byspotify.com
Other
Optional
Execution62ms
Transfer10 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
Unattributable adds 1571ms and costs ~$21/month
Optimizely adds 1131ms and costs ~$15/month
Google Tag Manager adds 955ms and costs ~$13/month
cmp.osano.com adds 832ms and costs ~$11/month
Google Tag Manager adds 794ms and costs ~$11/month
www.gstatic.com adds 367ms and costs ~$5/month
Google Tag Manager adds 268ms and costs ~$4/month
www.redditstatic.com adds 238ms and costs ~$3/month
84% 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 1571ms 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
Optimizely takes 1131ms 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 955ms 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
cmp.osano.com takes 832ms 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 794ms 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.gstatic.com takes 367ms 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
67% of www.gstatic.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
Google Tag Manager takes 268ms 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.redditstatic.com takes 238ms 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 Segment'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.
398 ms
2.4 s
2.8 s
3.2 s