Performance
· 17 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.
3.54 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.67 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
772 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.31 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.
10.69 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2437ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.geeksforgeeks.org/ | 622ms | 139ms | 2ms | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/pages/_app-353943c195caf1f1.js | 404ms | 294ms | 62ms | 3rd |
| Unattributable | 364ms | 7ms | 0ms | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/framework-3412d1150754b2fb.js | 280ms | 250ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-796001856&cx=c>m=4e64f0h2&bs=ctrl | 223ms | 183ms | 38ms | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/pages/index-a41c541dfc4e5566.js | 174ms | 169ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KDVRCT5 | 163ms | 130ms | 31ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DWCCJLKX3X | 146ms | 92ms | 49ms | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/main-83950604a31ac5bb.js | 61ms | 51ms | 8ms | 3rd |
DJS BundlesAction16 scripts, 331 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/pages/_app-353943c195caf1f1.js | 250 KB | 145 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-DWCCJLKX3X | 173 KB | 64 KB (37%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KDVRCT5 | 127 KB | 62 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-796001856&cx=c>m=4e64f0h2&bs=ctrl | 149 KB | 60 KB (40%) | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/main-83950604a31ac5bb.js | 31 KB | — | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/7792.f845f4f2c2ed5c7d.js | 4 KB | — | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/webpack-972a469c9ff8edaf.js | 6 KB | — | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/framework-3412d1150754b2fb.js | 42 KB | — | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/1119.ecfb8447af8524c5.js | 2 KB | — | ✓ | 3rd |
| https://assets.geeksforgeeks.org/gfg-assets/_next/static/chunks/3914.951f46ff700fc404.js | 22 KB | — | ✓ | 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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.1 MB transferred, 44 requestsREVIEW
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
CImage OptimizationAction17 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
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
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
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
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
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
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
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
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
BPage Weight Inventory44 resources · 1.1 MB · 331 KB savings availableREVIEW
~330.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 44 resources | 1.1 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints6 hints, 0 missing preconnectsPASS
Current Resource Hints
6 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall44 requests over 1690msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.geeksforgeeks.org www.geeksforgeeks.org | Other | 622ms | 29 KB | — | €10/mo | Costly |
assets.geeksforgeeks.org assets.geeksforgeeks.org | Other | 404ms | 250 KB | 58% | €6/mo | Costly |
Unattributable Unattributable | Other | 364ms | 0 KB | — | €6/mo | Costly |
assets.geeksforgeeks.org assets.geeksforgeeks.org | Other | 280ms | 42 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 223ms | 149 KB | 40% | €4/mo | Costly |
assets.geeksforgeeks.org assets.geeksforgeeks.org | Other | 174ms | 11 KB | — | €3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 163ms | 127 KB | 49% | €3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 146ms | 173 KB | 37% | €2/mo | Optional |
assets.geeksforgeeks.org assets.geeksforgeeks.org | Other | 61ms | 31 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.geeksforgeeks.org adds 622ms and costs ~€10/month
- assets.geeksforgeeks.org adds 404ms and costs ~€6/month
- Unattributable adds 364ms and costs ~€6/month
- assets.geeksforgeeks.org adds 280ms and costs ~€4/month
- Google Tag Manager adds 223ms and costs ~€4/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
www.geeksforgeeks.org takes 622ms 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
assets.geeksforgeeks.org takes 404ms 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
58% of assets.geeksforgeeks.org'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
Unattributable takes 364ms 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
assets.geeksforgeeks.org takes 280ms 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
Google Tag Manager takes 223ms 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