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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
71
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
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.
83
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.

1.58 s

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

2.30 s

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

248 ms

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

0.003

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

1.91 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.

2.30 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
6 PASS 2 REVIEW 5 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 105 requests
FIX
2.2 MB transferred, 105 requests
Info::
Page weighs 4.2 MB (2.2 MB transferred)
Warning::
Images are 1.4 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.4 MB
Warning::
JavaScript is 695 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 695 KB
Warning::
105 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.46 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
105 requests
0.46 g CO2 per page load
Images 1.4 MiB 62%
JavaScript 694.9 KiB 31%
Fonts 88.8 KiB 4%
CSS 46.4 KiB 2%
HTML 20.9 KiB 1%
Other 4.7 KiB 0%
Other 741 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
60% third-party, 0 ms blocking
FIX
60% third-party, 0 ms blocking
Warning::
Third-party code accounts for 60% of page weight (1.3 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
40%
60%
First-party Third-party
D
JS Execution Cost
Action
2045ms total JS execution
FIX
2045ms total JS execution
Warning::
https://laracasts.com/cdn-cgi/scripts/7d0fa10a/clo...: 580ms CPU time
Warning::
https://laracasts.com/build/assets/js/framework-Bs...: 502ms CPU time
Warning::
https://laracasts.com/build/assets/js/components-Z...: 499ms CPU time
Info::
Unattributable: 220ms CPU time
Info::
https://laracasts.com/: 139ms CPU time
Info::
Third-party scripts: 220ms (11% of total)

Main Thread Breakdown

Other 34% Script Evaluation 24% Style & Layout 21% Rendering 11% Parse HTML & CSS 8%
ScriptTotalScriptingParse/CompileParty
https://laracasts.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js580ms37ms0ms1st
https://laracasts.com/build/assets/js/framework-BsGa7Hb4.js502ms333ms1ms1st
https://laracasts.com/build/assets/js/components-ZFVIdC5l.js499ms20ms0ms1st
Unattributable220ms7ms0ms3rd
https://laracasts.com/139ms1ms0ms1st
https://laracasts.com/build/assets/js/vendors-ooIhsbpl.js105ms92ms2ms1st
D
JS Bundles
Action
29 scripts, 447 KB unused
FIX
29 scripts, 447 KB unused
Warning::
https://laracasts.com/build/assets/js/vendors-ooIh...: 292 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://laracasts.com/build/assets/js/framework-Bs...: 68 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://laracasts.com/build/assets/js/components-Z...: 66 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://laracasts.com/build/assets/js/charts-PLyK0...: 20 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 447 KB
447 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://laracasts.com/build/assets/js/vendors-ooIhsbpl.js368 KB292 KB (79%)✓1st
https://laracasts.com/build/assets/js/framework-BsGa7Hb4.js121 KB68 KB (57%)✓1st
https://laracasts.com/build/assets/js/components-ZFVIdC5l.js92 KB66 KB (72%)✓1st
https://laracasts.com/build/assets/js/charts-PLyK044s.js24 KB20 KB (84%)✓1st
https://laracasts.com/build/assets/js/DialogButton-DvMfi6jX.js1 KB—✓1st
https://laracasts.com/build/assets/js/MobileAccountMenu-D2vzSugz.js3 KB—✓1st
https://laracasts.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js4 KB—✓1st
https://laracasts.com/build/assets/js/app-DxIGvgxk.js0 KB—✓1st
https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js17 KB—✓3rd
https://laracasts.com/build/assets/js/Home-CMeE3fOH.js1 KB—✓1st

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

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

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

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

F
Page Weight Inventory
Action
105 resources · 2.2 MB · 447 KB savings available
FIX
105 resources · 2.2 MB · 447 KB savings available
Warning::
Page weight 1.2 MB over 1MB target
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~447 KB of savings available
Warning::
52 third-party resources (60% of weight)
Info::
2 resources over 200KB
105 resources · 2.2 MiB · 52 third-party 1.2 MiB over 1MB target
Image 62% · 1.4 MiB
JavaScript 31% · 694.9 KiB
Font 4% · 88.8 KiB
CSS 2% · 46.4 KiB
Document 1% · 20.9 KiB
Other 0% · 1.3 KiB

~447.4 KiB of savings available

Remove unused JavaScript: 447.4 KiB
B
Image Optimization
53 images, 0 KB saveable
REVIEW
53 images, 0 KB saveable
Warning::
https://images.laracasts.com/instructors/1770.jpeg... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.laracasts.com/instructors/2071.jpeg... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.laracasts.com/instructors/253739.jp... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.laracasts.com/instructors/24345.jpe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.laracasts.com/instructors/11951.jpe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
53 images 1.4 MB
0 oversized -0 KB
3 legacy format
5 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

B
HTTP Caching
no-cache, private
REVIEW
no-cache, private
Info::
Cache-Control header is set
Got: no-cache, private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, private

DirectiveValueMeaning
no-cache—Cache but always revalidate first
private—Only browser cache, not CDN/proxy
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
3 fonts (89 KB)
PASS
3 fonts (89 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

89 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.6 s LCP 2.3 shttps://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2ShadowNoir.woff2 https://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2 — 24.6 KiB — 41 ms — font-display: swaphttps://laracasts.com/cf-fonts/v/hanken-grotesk/5.0.18/latin/wght/normal.woff2normal.woff2 https://laracasts.com/cf-fonts/v/hanken-grotesk/5.0.18/latin/wght/normal.woff2 — 34.1 KiB — 33 ms — font-display: swaphttps://laracasts.com/fonts/dank-mono/DankMono-Regular.woff2DankMono-Regular.woff2 https://laracasts.com/fonts/dank-mono/DankMono-Regular.woff2 — 30.1 KiB — 17 ms — font-display: swap
ShadowNoir.woff2 woff2 swap
Size 25 KB
Load time 41 ms
Start 158 ms
Risk FOUT — text flashes from fallback to web font
normal.woff2 woff2 swap
Size 34 KB
Load time 33 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
DankMono-Regular.woff2 woff2 swap
Size 30 KB
Load time 17 ms
Start 1.2 s
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+
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+
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
105 requests over 1395ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.6 s LCP 2.3 shttps://laracasts.com// https://laracasts.com/ — 200 — 20.9 KiB — 150 ms — h3https://laracasts.com/cdn-cgi/speculation/cdn-cgi/speculation https://laracasts.com/cdn-cgi/speculation — 200 — 284 B — 10 ms — h3https://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2/fonts/shadow-noir/ShadowNoir.woff2 https://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2 — 200 — 24.6 KiB — 41 ms — h3https://laracasts.com/images/home/pixels-bg.png/images/home/pixels-bg.png https://laracasts.com/images/home/pixels-bg.png — 200 — 12.8 KiB — 30 ms — h3https://laracasts.com/build/assets/css/components-SHdSV1M6.css/build/assets/css/components-SHdSV1... https://laracasts.com/build/assets/css/components-SHdSV1M6.css — 200 — 2.9 KiB — 22 ms — h3https://laracasts.com/build/assets/css/framework-BPIcZy6P.css/build/assets/css/framework-BPIcZy6... https://laracasts.com/build/assets/css/framework-BPIcZy6P.css — 200 — 1.4 KiB — 20 ms — h3https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css/build/assets/css/vendors-Dfs9RUU9.... https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css — 200 — 676 B — 24 ms — h3https://laracasts.com/build/assets/css/charts-BDcPIRKe.css/build/assets/css/charts-BDcPIRKe.c... https://laracasts.com/build/assets/css/charts-BDcPIRKe.css — 200 — 1.9 KiB — 27 ms — h3https://laracasts.com/build/assets/css/app-DVeEFkgJ.css/build/assets/css/app-DVeEFkgJ.css https://laracasts.com/build/assets/css/app-DVeEFkgJ.css — 200 — 36.1 KiB — 41 ms — h3https://laracasts.com/build/assets/js/app-DxIGvgxk.js/build/assets/js/app-DxIGvgxk.js https://laracasts.com/build/assets/js/app-DxIGvgxk.js — 200 — 12.1 KiB — 38 ms — h3https://laracasts.com/build/assets/js/components-ZFVIdC5l.js/build/assets/js/components-ZFVIdC5... https://laracasts.com/build/assets/js/components-ZFVIdC5l.js — 200 — 92.0 KiB — 52 ms — h3https://laracasts.com/build/assets/js/framework-BsGa7Hb4.js/build/assets/js/framework-BsGa7Hb4... https://laracasts.com/build/assets/js/framework-BsGa7Hb4.js — 200 — 121.2 KiB — 52 ms — h3https://laracasts.com/build/assets/js/vendors-ooIhsbpl.js/build/assets/js/vendors-ooIhsbpl.j... https://laracasts.com/build/assets/js/vendors-ooIhsbpl.js — 200 — 368.4 KiB — 109 ms — h3https://laracasts.com/build/assets/js/utils-Cm3HkoZj.js/build/assets/js/utils-Cm3HkoZj.js https://laracasts.com/build/assets/js/utils-Cm3HkoZj.js — 200 — 16.7 KiB — 34 ms — h3https://laracasts.com/build/assets/js/charts-PLyK044s.js/build/assets/js/charts-PLyK044s.js https://laracasts.com/build/assets/js/charts-PLyK044s.js — 200 — 24.0 KiB — 42 ms — h3https://laracasts.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js/cdn-cgi/scripts/7d0fa10a/cloudflar... https://laracasts.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js — 200 — 4.0 KiB — 18 ms — h3https://laracasts.com/favicons/site.webmanifest/favicons/site.webmanifest https://laracasts.com/favicons/site.webmanifest — 200 — 741 B — 33 ms — h3https://laracasts.com/build/assets/js/app-DxIGvgxk.js/build/assets/js/app-DxIGvgxk.js https://laracasts.com/build/assets/js/app-DxIGvgxk.js — -1 — 0 B — 5 ms — https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit — 302 — 265 B — 11 ms — h3https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.jschallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js — 200 — 17.3 KiB — 18 ms — h3https://laracasts.com/favicons/favicon.ico/favicons/favicon.ico https://laracasts.com/favicons/favicon.ico — 200 — 4.2 KiB — 28 ms — h3https://laracasts.com/build/assets/js/Home-CMeE3fOH.js/build/assets/js/Home-CMeE3fOH.js https://laracasts.com/build/assets/js/Home-CMeE3fOH.js — 200 — 1.3 KiB — 31 ms — h3https://laracasts.com/build/assets/js/Layout-DxcWaXWy.js/build/assets/js/Layout-DxcWaXWy.js https://laracasts.com/build/assets/js/Layout-DxcWaXWy.js — 200 — 641 B — 26 ms — h3https://laracasts.com/build/assets/js/BaseLayout-DwX08Ma9.js/build/assets/js/BaseLayout-DwX08Ma... https://laracasts.com/build/assets/js/BaseLayout-DwX08Ma9.js — 200 — 15.6 KiB — 41 ms — h3https://laracasts.com/build/assets/css/charts-BDcPIRKe.css/build/assets/css/charts-BDcPIRKe.c... https://laracasts.com/build/assets/css/charts-BDcPIRKe.css — 200 — 0 B — 18 ms — h3https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css/build/assets/css/vendors-Dfs9RUU9.... https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css — 200 — 0 B — 18 ms — h3https://laracasts.com/build/assets/css/framework-BPIcZy6P.css/build/assets/css/framework-BPIcZy6... https://laracasts.com/build/assets/css/framework-BPIcZy6P.css — 200 — 0 B — 23 ms — h3https://laracasts.com/build/assets/css/components-SHdSV1M6.css/build/assets/css/components-SHdSV1... https://laracasts.com/build/assets/css/components-SHdSV1M6.css — 200 — 0 B — 23 ms — h3https://laracasts.com/build/assets/js/Dialog.vue_vue_type_style_index_0_lang-KmHvBHva.js/build/assets/js/Dialog.vue_vue_typ... https://laracasts.com/build/assets/js/Dialog.vue_vue_type_style_index_0_lang-KmHvBHva.js — 200 — 1.7 KiB — 56 ms — h3https://laracasts.com/build/assets/css/Dialog-DTSeNLTi.css/build/assets/css/Dialog-DTSeNLTi.c... https://laracasts.com/build/assets/css/Dialog-DTSeNLTi.css — 200 — 990 B — 21 ms — h3
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.6 s LCP 2.3 shttps://laracasts.com// https://laracasts.com/ — 200 — 20.9 KiB — 150 ms — h3https://laracasts.com/cdn-cgi/speculation/cdn-cgi/speculation https://laracasts.com/cdn-cgi/speculation — 200 — 284 B — 10 ms — h3https://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2/fonts/shadow-noir/ShadowNoir.woff2 https://laracasts.com/fonts/shadow-noir/ShadowNoir.woff2 — 200 — 24.6 KiB — 41 ms — h3https://laracasts.com/images/home/pixels-bg.png/images/home/pixels-bg.png https://laracasts.com/images/home/pixels-bg.png — 200 — 12.8 KiB — 30 ms — h3https://laracasts.com/build/assets/css/components-SHdSV1M6.css/build/assets/css/components-SHdSV1... https://laracasts.com/build/assets/css/components-SHdSV1M6.css — 200 — 2.9 KiB — 22 ms — h3https://laracasts.com/build/assets/css/framework-BPIcZy6P.css/build/assets/css/framework-BPIcZy6... https://laracasts.com/build/assets/css/framework-BPIcZy6P.css — 200 — 1.4 KiB — 20 ms — h3https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css/build/assets/css/vendors-Dfs9RUU9.... https://laracasts.com/build/assets/css/vendors-Dfs9RUU9.css — 200 — 676 B — 24 ms — h3https://laracasts.com/build/assets/css/charts-BDcPIRKe.css/build/assets/css/charts-BDcPIRKe.c... https://laracasts.com/build/assets/css/charts-BDcPIRKe.css — 200 — 1.9 KiB — 27 ms — h3https://laracasts.com/build/assets/css/app-DVeEFkgJ.css/build/assets/css/app-DVeEFkgJ.css https://laracasts.com/build/assets/css/app-DVeEFkgJ.css — 200 — 36.1 KiB — 41 ms — h3https://laracasts.com/build/assets/js/app-DxIGvgxk.js/build/assets/js/app-DxIGvgxk.js https://laracasts.com/build/assets/js/app-DxIGvgxk.js — 200 — 12.1 KiB — 38 ms — h3https://laracasts.com/build/assets/js/components-ZFVIdC5l.js/build/assets/js/components-ZFVIdC5... https://laracasts.com/build/assets/js/components-ZFVIdC5l.js — 200 — 92.0 KiB — 52 ms — h3https://laracasts.com/build/assets/js/framework-BsGa7Hb4.js/build/assets/js/framework-BsGa7Hb4... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
11% of JavaScript execution is third-party
First-party Third-party 220ms · 0KB · $3/mo
Unattributable
Other
Costly
Execution 220ms
Transfer 0 KB
Monthly Cost $3/mo

These scripts may cost more than they're worth

  • Unattributable adds 220ms and costs ~$3/month

Unattributable takes 220ms 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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