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.
843 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.31 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
72 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.183
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
843 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
4.91 s
Page Load Progression
DThird-Party ImpactAction73% third-party, 0 ms blockingFIX
DHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction11 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
BJS Execution Cost565ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 204ms | 64ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-06CVYXZPHS&cx=c>m=4e64h1 | 145ms | 108ms | 36ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-148378786-1 | 131ms | 100ms | 29ms | 3rd |
| https://notepad-plus-plus.org/ | 84ms | 7ms | 2ms | 1st |
BJS Bundles6 scripts, 131 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-06CVYXZPHS&cx=c>m=4e64h1 | 163 KB | 67 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-148378786-1 | 125 KB | 64 KB (51%) | ✓ | 3rd |
| https://notepad-plus-plus.org/js/prism.js | 5 KB | — | ✓ | 1st |
| https://notepad-plus-plus.org/js/dom-scripts.js | 1 KB | — | ✓ | 1st |
| https://cdn.carbonads.com/carbon.js?serve=CKYIE53I&placement=notepad-plus-plusorg | 11 KB | — | ✓ | 3rd |
| https://www.google-analytics.com/analytics.js | 21 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
A+Page Weight Budget469 KB transferred, 31 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (12 KB)PASS
Web fonts
1
12 KB total
Render-blocking
0
of 1
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
APage Weight Inventory31 resources · 469 KB · 131 KB savings availablePASS
~131.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 31 resources | 469.1 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Hostinger
Network Waterfall31 requests over 1467msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 204ms | 0 KB | — | €0/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 145ms | 163 KB | 41% | €0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 131ms | 125 KB | 51% | €0/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 204ms and costs ~€0/month
85% 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
Unattributable takes 204ms 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
51% of Google Tag Manager'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