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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
2
PASS
11
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
72
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.90 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.89 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

119 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.10 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.89 s

Page Load Progression

494 ms
988 ms
1.5 s
2.0 s
2.5 s
3.0 s
3.5 s
4.0 s
Checks
17
11 PASS 2 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (948.6 KiB of 948.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
max-age0Cache for 0 seconds
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
post-check0
pre-check0
C
Image Optimization
Action
29 images, 0 KB saveable
REVIEW
29 images, 0 KB saveable
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2024/hos... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/dir... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2024/coh... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/mobile-s... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2024/fan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/mobile_l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2024/mag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/mobile_p... 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://assets.buzzsprout.com/assets/home/mobile_b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/dir... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/mobile_b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2024/mob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/lis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.buzzsprout.com/assets/home/2021/dir... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
29 images 662 KB
0 oversized -0 KB
15 legacy format
24 missing dimensions CLS 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

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

C
JS Execution Cost
Action
1421ms total JS execution
REVIEW
1421ms total JS execution
Warning::
https://www.buzzsprout.com/: 728ms CPU time
Warning::
https://assets.buzzsprout.com/assets/home_main-370...: 378ms CPU time
Warning::
Unattributable: 316ms CPU time
Warning::
Third-party scripts: 1421ms (100% of total)

Main Thread Breakdown

Other 47% Style & Layout 32% Rendering 10% Script Evaluation 7% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.buzzsprout.com/728ms12ms0ms3rd
https://assets.buzzsprout.com/assets/home_main-37060b7431474a5a88f6bbfff4b89f2fbf2b7642495d9c33ae5f5eb83245231b.js378ms65ms15ms3rd
Unattributable316ms8ms0ms3rd
A
Page Weight Budget
949 KB transferred, 40 requests
PASS
949 KB transferred, 40 requests
Info::
Page weighs 1.5 MB (949 KB transferred)
Info::
40 HTTP requests
Info::
Estimated 0.19 g CO2 per page load
949 KB / 2.4 MB budget
949 KB transferred
40 requests
0.19 g CO2 per page load
Images 661.9 KiB 70%
Fonts 135.0 KiB 14%
JavaScript 50.9 KiB 5%
CSS 49.2 KiB 5%
HTML 49.1 KiB 5%
Other 2.4 KiB 0%
Other 306 B 0%
0 2.4 MB 4.9 MB
Under budget
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
4 fonts (135 KB)
PASS
4 fonts (135 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

135 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 3.9 s LCP 4.9 shttps://assets.buzzsprout.com/assets/Graphik-Semibold-Web-8199d8d99e5f724b0f10be09d099f98a3044d5f61650db810b4a82e49ea283cc.woff2Graphik-Semibold-Web-81... https://assets.buzzsprout.com/assets/Graphik-Semibold-Web-8199d8d99e5f724b0f10be09d099f98a3044d5f61650db810b4a82e49ea283cc.woff2 — 34.0 KiB — 105 ms — font-display: swaphttps://assets.buzzsprout.com/assets/Graphik-Medium-Web-77b07aee798bae1f0fdbf58736a0b639e8bb58106f401706454c8fb98c892caa.woff2Graphik-Medium-Web-77b0... https://assets.buzzsprout.com/assets/Graphik-Medium-Web-77b07aee798bae1f0fdbf58736a0b639e8bb58106f401706454c8fb98c892caa.woff2 — 35.7 KiB — 46 ms — font-display: swaphttps://assets.buzzsprout.com/assets/Graphik-Regular-Web-8f5eedcdb6cc3fdeeb4272dd4c1825195c1447e753c18986e4201a5089241008.woff2Graphik-Regular-Web-8f5... https://assets.buzzsprout.com/assets/Graphik-Regular-Web-8f5eedcdb6cc3fdeeb4272dd4c1825195c1447e753c18986e4201a5089241008.woff2 — 30.3 KiB — 34 ms — font-display: swaphttps://assets.buzzsprout.com/assets/Graphik-Bold-Web-c3d3af40bd84dcfcc4fe8c5212bd39aa6d411f42116041e4235c38a1c868e107.woff2Graphik-Bold-Web-c3d3af... https://assets.buzzsprout.com/assets/Graphik-Bold-Web-c3d3af40bd84dcfcc4fe8c5212bd39aa6d411f42116041e4235c38a1c868e107.woff2 — 35.0 KiB — 32 ms — font-display: swap
Graphik-Semibold-Web-81... woff2 swap
Size 34 KB
Load time 105 ms
Start 223 ms
Risk FOUT — text flashes from fallback to web font
Graphik-Medium-Web-77b0... woff2 swap
Size 36 KB
Load time 46 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
Graphik-Regular-Web-8f5... woff2 swap
Size 30 KB
Load time 34 ms
Start 403 ms
Risk FOUT — text flashes from fallback to web font
Graphik-Bold-Web-c3d3af... woff2 swap
Size 35 KB
Load time 32 ms
Start 403 ms
Risk FOUT — 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+
JS Bundles
2 scripts, 37 KB unused
PASS
2 scripts, 37 KB unused
Warning::
https://assets.buzzsprout.com/assets/home_main-370...: 37 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 37 KB
37 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets.buzzsprout.com/assets/home_main-37060b7431474a5a88f6bbfff4b89f2fbf2b7642495d9c33ae5f5eb83245231b.js48 KB37 KB (78%)✓3rd
https://analytics.ahrefs.com/analytics.js3 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
—
preload
1
dns-prefetch
—
prefetch
—

1 resource hints configured

A
Page Weight Inventory
40 resources · 949 KB · 37 KB savings available
PASS
40 resources · 949 KB · 37 KB savings available
Info::
Within 1MB page-weight target
Got: 949 KB
Warning::
39 third-party resources (100% of weight)
40 resources · 948.7 KiB · 39 third-party Within 1MB page-weight target
Image 70% · 664.1 KiB
Font 14% · 135.0 KiB
JavaScript 5% · 50.9 KiB
CSS 5% · 49.2 KiB
Document 5% · 49.1 KiB
Other 0% · 403 B

~37.1 KiB of savings available

Remove unused JavaScript: 37.1 KiB
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
40 requests over 1651ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 3.9 s LCP 4.9 shttps://buzzsprout.com// https://buzzsprout.com/ — 302 — 97 B — 68 ms — h2https://www.buzzsprout.com/www.buzzsprout.com/ https://www.buzzsprout.com/ — 200 — 49.1 KiB — 146 ms — h2https://analytics.ahrefs.com/analytics.jsanalytics.ahrefs.com/analytics.js https://analytics.ahrefs.com/analytics.js — 200 — 3.0 KiB — 84 ms — h3https://assets.buzzsprout.com/assets/Graphik-Semibold-Web-8199d8d99e5f724b0f10be09d099f98a3044d5f61650db810b4a82e49ea283cc.woff2assets.buzzsprout.com/assets/Graphi... https://assets.buzzsprout.com/assets/Graphik-Semibold-Web-8199d8d99e5f724b0f10be09d099f98a3044d5f61650db810b4a82e49ea283cc.woff2 — 200 — 34.0 KiB — 105 ms — h2https://assets.buzzsprout.com/assets/home-7c6006fe237cec4eb87dd2ff19b9735e8041f3c98f8a11dc5da0763bd3f60c1b.cssassets.buzzsprout.com/assets/home-7... https://assets.buzzsprout.com/assets/home-7c6006fe237cec4eb87dd2ff19b9735e8041f3c98f8a11dc5da0763bd3f60c1b.css — 200 — 19.5 KiB — 80 ms — h2https://assets.buzzsprout.com/assets/tailwind-922a972991d23312480bcad5bb0a7061988c7314a9d0f54d6a141bfeb47cf1a2.cssassets.buzzsprout.com/assets/tailwi... https://assets.buzzsprout.com/assets/tailwind-922a972991d23312480bcad5bb0a7061988c7314a9d0f54d6a141bfeb47cf1a2.css — 200 — 29.7 KiB — 85 ms — h2https://assets.buzzsprout.com/assets/home/2024/hosting-sm-84fc10c0c0abe6a3e4cab5be4d34b5ed99c466807c6b6801fe51621c46745ab7.webpassets.buzzsprout.com/assets/home/2... https://assets.buzzsprout.com/assets/home/2024/hosting-sm-84fc10c0c0abe6a3e4cab5be4d34b5ed99c466807c6b6801fe51621c46745ab7.webp — 200 — 70.0 KiB — 78 ms — h2https://assets.buzzsprout.com/assets/home/2024/fanmail-sm-5e428c68ec64e158ef7c7dabd2d5870c0c960743353824adf106eaf4f549be1c.webpassets.buzzsprout.com/assets/home/2... https://assets.buzzsprout.com/assets/home/2024/fanmail-sm-5e428c68ec64e158ef7c7dabd2d5870c0c960743353824adf106eaf4f549be1c.webp — 200 — 26.5 KiB — 60 ms — h2https://assets.buzzsprout.com/assets/home_main-37060b7431474a5a88f6bbfff4b89f2fbf2b7642495d9c33ae5f5eb83245231b.jsassets.buzzsprout.com/assets/home_m... https://assets.buzzsprout.com/assets/home_main-37060b7431474a5a88f6bbfff4b89f2fbf2b7642495d9c33ae5f5eb83245231b.js — 200 — 47.9 KiB — 84 ms — h2https://analytics.ahrefs.com/api/eventanalytics.ahrefs.com/api/event https://analytics.ahrefs.com/api/event — 200 — 306 B — 141 ms — h3https://assets.buzzsprout.com/assets/home/logo_buzzsprout-2520328ab0f28350d5096cecc4bdcdfaebbf423d54c9904203580631d63c2fdd.svgassets.buzzsprout.com/assets/home/l... https://assets.buzzsprout.com/assets/home/logo_buzzsprout-2520328ab0f28350d5096cecc4bdcdfaebbf423d54c9904203580631d63c2fdd.svg — 200 — 3.8 KiB — 28 ms — h2https://assets.buzzsprout.com/assets/home/man-podcasting-758ad10846f4e2bc91d97fc921dca749f75d773fd104e84bb6fe701179b6142a.jpgassets.buzzsprout.com/assets/home/m... https://assets.buzzsprout.com/assets/home/man-podcasting-758ad10846f4e2bc91d97fc921dca749f75d773fd104e84bb6fe701179b6142a.jpg — 200 — 30.4 KiB — 28 ms — h2https://assets.buzzsprout.com/assets/home/2021/icon-ratings-emails-f0d260dfef7011699d011d18d397620c080aa2ef3e0cb3095a4d04e007302df9.svgassets.buzzsprout.com/assets/home/2... https://assets.buzzsprout.com/assets/home/2021/icon-ratings-emails-f0d260dfef7011699d011d18d397620c080aa2ef3e0cb3095a4d04e007302df9.svg — 200 — 1.4 KiB — 30 ms — h2https://assets.buzzsprout.com/assets/home/2021/icon-ratings-customers-cda162e73835a642e0f33c406229b4bcca1debf2e6eab67e5961c3447fec79af.svgassets.buzzsprout.com/assets/home/2... https://assets.buzzsprout.com/assets/home/2021/icon-ratings-customers-cda162e73835a642e0f33c406229b4bcca1debf2e6eab67e5961c3447fec79af.svg — 200 — 2.8 KiB — 28 ms — 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100% of JavaScript execution is third-party
First-party Third-party 1421ms · 97KB · €15/mo
www.buzzsprout.com
Other
Costly
Execution 728ms
Transfer 49 KB
Monthly Cost €8/mo
assets.buzzsprout.com
Other
Costly
Execution 378ms
Transfer 48 KB
Unused 78%
Monthly Cost €4/mo
Unattributable
Other
Costly
Execution 316ms
Transfer 0 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • www.buzzsprout.com adds 728ms and costs ~€8/month
  • assets.buzzsprout.com adds 378ms and costs ~€4/month
  • Unattributable adds 316ms 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.

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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.buzzsprout.com takes 728ms 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

assets.buzzsprout.com takes 378ms 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

78% of assets.buzzsprout.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 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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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