Performance
· 27 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.
1.25 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.24 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.098
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.09 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.
10.95 s
Page Load Progression
FJS Execution CostAction5572ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://magiceraser.live/en | 3035ms | 46ms | 62ms | 1st |
| Unattributable | 580ms | 27ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=AW-17733122693&cx=c>m=4e67e0h2 | 486ms | 358ms | 122ms | 3rd |
| https://www.googletagmanager.com/gtag/js?l=dataLayer&id=G-JS4LWJQ80F | 436ms | 370ms | 56ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKTTN5C | 306ms | 241ms | 61ms | 3rd |
| https://magiceraser.live/_next/static/chunks/1255-f6bc6c240a3a41c8.js | 272ms | 248ms | 18ms | 1st |
| https://magiceraser.live/_next/static/chunks/4bd1b696-f785427dddbba9fb.js | 236ms | 209ms | 19ms | 1st |
| https://magiceraser.live/_next/static/chunks/7134.eb01a635812cbdbd.js | 120ms | 98ms | 3ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-JS4LWJQ80F&cx=c>m=4e67e0h2 | 102ms | 43ms | 59ms | 3rd |
DJS BundlesAction21 scripts, 302 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-JS4LWJQ80F&cx=c>m=4e67e0h2 | 177 KB | 117 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKTTN5C | 150 KB | 67 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?l=dataLayer&id=G-JS4LWJQ80F | 177 KB | 64 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17733122693&cx=c>m=4e67e0h2 | 149 KB | 53 KB (36%) | ✓ | 3rd |
| https://magiceraser.live/_next/static/chunks/app/%5Blang%5D/(marketing)/page-bf976e829fff88b4.js | 3 KB | — | ✓ | 1st |
| https://magiceraser.live/_next/static/chunks/7134.eb01a635812cbdbd.js | 8 KB | — | ✓ | 1st |
| https://magiceraser.live/_next/static/chunks/1356-755aa3bd33dc7e24.js | 5 KB | — | ✓ | 1st |
| https://magiceraser.live/_next/static/chunks/5219-eeb295229dab3c51.js | 1 KB | — | ✓ | 1st |
| https://magiceraser.live/_next/static/chunks/2545-d5a4d3ae67ae19e5.js | 6 KB | — | ✓ | 1st |
| https://magiceraser.live/_next/static/chunks/app/%5Blang%5D/(marketing)/layout-a90c133d4e5c8b8e.js | 2 KB | — | ✓ | 1st |
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 Budget1.2 MB transferred, 59 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
BThird-Party Impact52% third-party, 0 ms blockingREVIEW
BImage Optimization14 images, 0 KB saveableREVIEW
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction59 resources · 1.2 MB · 302 KB savings availableREVIEW
~301.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 59 resources | 1.2 MiB | ||||||
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (21 KB)PASS
Web fonts
4
21 KB total
Render-blocking
0
of 4
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
AResource Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 resource hints configured
preconnect already does the DNS lookup; adding dns-prefetch to the same origin is at best a no-op. Sample: https://web.magiceraser.live. Remove the redundant dns-prefetch entries.
Performance issues directly impact user engagement and conversion rates.
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://web.magiceraser.live (preconnect+dns-prefetch).
Performance issues directly impact user engagement and conversion rates.
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall59 requests over 2167msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 486ms | 149 KB | 36% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 436ms | 177 KB | 36% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 306ms | 150 KB | 44% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 102ms | 177 KB | 66% | €1/mo | Optional |
These scripts may cost more than they're worth
- Google Tag Manager adds 486ms and costs ~€5/month
- Google Tag Manager adds 436ms and costs ~€5/month
- Google Tag Manager adds 306ms and costs ~€3/month
Google Tag Manager takes 486ms 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 436ms 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 306ms 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
66% 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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-16 — 2026-07-13)
LCP (p75)
2499 ms
73% good
INP (p75)
106 ms
90% good
CLS (p75)
0.030
94% good
FCP (p75)
2481 ms
TTFB (p75)
1796 ms
Image Optimization44 images, 91 KB total, 10 KB wastedINFO
Image Optimization Audit
Total Images
44
Total Size
91 KB
Oversized
1
Wasted
10 KB