Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.55 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.33 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
486 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.
3.07 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.
6.32 s
Page Load Progression
FPage Weight BudgetAction4.0 MB transferred, 138 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2735ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/3343-893a61caa74f31c5.js | 829ms | 698ms | 14ms | 3rd |
| https://www.fool.com/ | 506ms | 24ms | 15ms | 3rd |
| Unattributable | 284ms | 29ms | 0ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otTCF.js | 272ms | 233ms | 2ms | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/1665-e64431847bdbfe4b.js | 229ms | 168ms | 40ms | 3rd |
| https://cdn.cookielaw.org/consent/02abb198-81a8-49e5-a9b1-f69a5dd9c039/OtAutoBlock.js | 201ms | 101ms | 100ms | 3rd |
| https://www.fool.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 112ms | 108ms | 1ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 80ms | 40ms | 17ms | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/2281.c9fa76206b1bccd7.js | 75ms | 63ms | 7ms | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/4bd1b696-08cfad17fdcb0ead.js | 74ms | 63ms | 7ms | 3rd |
Showing top 10 of 11 scripts
FJS BundlesAction65 scripts, 828 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/1665-e64431847bdbfe4b.js | 473 KB | 394 KB (83%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/3343-893a61caa74f31c5.js | 176 KB | 88 KB (50%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 128 KB | 74 KB (57%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/7315-542ded90caffe8c8.js | 117 KB | 54 KB (50%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/2281.c9fa76206b1bccd7.js | 86 KB | 45 KB (53%) | ✓ | 3rd |
| https://www.dianomi.com/js/contextfeed.js | 39 KB | 30 KB (77%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/1395-f5a949de724c509d.js | 31 KB | 27 KB (88%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/4975-12ab143dfba4d65b.js | 26 KB | 25 KB (96%) | ✓ | 3rd |
| https://g.foolcdn.com/static/foolcom/_next/static/chunks/4594-d6fd6c23cad9c3d7.js | 27 KB | 24 KB (93%) | ✓ | 3rd |
| https://cdn.userway.org/widgetapp/2026-04-14-10-40-20/widget_app_base_1776163220800.js | 48 KB | 24 KB (51%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction138 resources · 4.0 MB · 828 KB savings availableFIX
~828.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 138 resources | 4.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization15 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (88 KB)PASS
Web fonts
3
88 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall138 requests over 6398msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
g.foolcdn.com g.foolcdn.com | Other | 829ms | 176 KB | 50% | €9/mo | Costly |
www.fool.com www.fool.com | Other | 506ms | 1 KB | — | €5/mo | Costly |
Unattributable Unattributable | Other | 284ms | 0 KB | — | €3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 272ms | 18 KB | — | €3/mo | Essential |
g.foolcdn.com g.foolcdn.com | Other | 229ms | 473 KB | 83% | €2/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 201ms | 296 KB | — | €2/mo | Essential |
www.fool.com www.fool.com | Other | 112ms | 0 KB | — | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 80ms | 128 KB | 57% | €1/mo | Essential |
g.foolcdn.com g.foolcdn.com | Other | 75ms | 86 KB | 53% | €1/mo | Optional |
g.foolcdn.com g.foolcdn.com | Other | 74ms | 71 KB | — | €1/mo | Optional |
g.foolcdn.com g.foolcdn.com | Other | 72ms | 51 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- g.foolcdn.com adds 829ms and costs ~€9/month
- www.fool.com adds 506ms and costs ~€5/month
- Unattributable adds 284ms and costs ~€3/month
- g.foolcdn.com adds 229ms and costs ~€2/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
g.foolcdn.com takes 829ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.fool.com takes 506ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 284ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
g.foolcdn.com takes 229ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
83% of g.foolcdn.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
57% of OneTrust's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
53% of g.foolcdn.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev