https://magiceraser.live
Performance
· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
82
GRADE
B
FIX
3
REVIEW
7
PASS
9
INFO
4
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
99
96
81
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
391 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
472 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
103 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.
598 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.
2.61 s
Page Load Progression
494 ms
989 ms
1.5 s
2.0 s
2.5 s 3.0 s
3.5 s
4.0 sChecks
239 PASS 7 REVIEW 3 FIX
DJS BundlesAction21 scripts, 300 KB unusedFIX
JS Bundles
Action21 scripts, 300 KB unused
21 scripts, 300 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?l=dataLay...: 117 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PJK...: 65 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-JS4L...: 64 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-177...: 53 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 300 KB
300 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?l=dataLayer&id=G-JS4LWJQ80F | 177 KB | 117 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKTTN5C | 147 KB | 65 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JS4LWJQ80F&cx=c>m=4e67d0 | 177 KB | 64 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17733122693&cx=c>m=4e67d0 | 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 | 6 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.
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
DPage Weight InventoryAction71 resources · 1.6 MB · 300 KB savings availableFIX
Page Weight Inventory
Action71 resources · 1.6 MB · 300 KB savings available
71 resources · 1.6 MB · 300 KB savings available
Warning::
Page weight 1.6 MB exceeds 1 MB target by 646 KB
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~300 KB of savings available
Info::
20 third-party resources (39% of weight)
71 resources · 1.6 MiB · 20 third-party 646.4 KiB over 1MB target
Image 48% · 804.0 KiB
JavaScript 48% · 794.1 KiB
Document 2% · 32.2 KiB
Font 1% · 21.5 KiB
CSS 1% · 13.5 KiB
Other 0% · 5.0 KiB
~300.2 KiB of savings available
Remove unused JavaScript: 300.2 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 71 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 71 requestsREVIEW
Page Weight Budget
Action1.6 MB transferred, 71 requests
1.6 MB transferred, 71 requests
Info::
Page weighs 3.5 MB (1.6 MB transferred)
Warning::
JavaScript is 794 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 794 KB
Info::
71 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB transferred
71 requests
0.34 g CO2 per page load
JavaScript 794.1 KiB 48%
Images 750.9 KiB 45%
Other 53.8 KiB 3%
HTML 32.1 KiB 2%
Fonts 21.5 KiB 1%
CSS 13.5 KiB 1%
Other 2.6 KiB 0%
Other 1.3 KiB 0%
Other 549 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit
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
BImage Optimization26 images, 0 KB saveableREVIEW
Image Optimization
26 images, 0 KB saveable
26 images, 0 KB saveable
Info::
All images are well-optimized
26 images 751 KB
0 oversized -0 KB
12 legacy format
0 missing dimensions CLS risk
CJS Execution CostAction1421ms total JS executionREVIEW
JS Execution Cost
Action1421ms total JS execution
1421ms total JS execution
Warning::
https://magiceraser.live/en: 720ms CPU time
Info::
Unattributable: 231ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-JS4L...: 128ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=AW-177...: 126ms CPU time
Info::
https://magiceraser.live/_next/static/chunks/1255-...: 123ms CPU time
Info::
Third-party scripts: 347ms (24% of total)
Main Thread Breakdown
Script Evaluation 32% Other 26% Style & Layout 21% Rendering 11% Script Parsing & Compilation 7%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://magiceraser.live/en | 720ms | 12ms | 10ms | 1st |
| Unattributable | 231ms | 7ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-JS4LWJQ80F&cx=c>m=4e67d0 | 128ms | 109ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17733122693&cx=c>m=4e67d0 | 126ms | 98ms | 27ms | 3rd |
| https://magiceraser.live/_next/static/chunks/1255-f6bc6c240a3a41c8.js | 123ms | 114ms | 7ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-PJKTTN5C | 93ms | 76ms | 15ms | 3rd |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
AThird-Party Impact39% third-party, 0 ms blockingPASS
Third-Party Impact
39% third-party, 0 ms blocking
39% third-party, 0 ms blocking
Info::
Third-party code accounts for 39% of page weight (655.6 KiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
61%
39%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading4 fonts (21 KB)PASS
Font Loading
4 fonts (21 KB)
4 fonts (21 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
21 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
de4fc44f89059189-s.woff2 woff2 swap
Size 5 KB
Load time 27 ms
Start 362 ms
Risk FOUT — text flashes from fallback to web font
faf12809fe069df4-s.woff2 woff2 swap
Size 5 KB
Load time 60 ms
Start 364 ms
Risk FOUT — text flashes from fallback to web font
7c0a695f6fa5005e-s.woff2 woff2 swap
Size 5 KB
Load time 30 ms
Start 365 ms
Risk FOUT — text flashes from fallback to web font
9d5185991feb027c-s.woff2 woff2 swap
Size 5 KB
Load time 75 ms
Start 365 ms
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 CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Server Response Intelligence
1 server-response signal(s) detected
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall71 requests over 1639msINFO
Network Waterfall
71 requests over 1639ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
24% of JavaScript execution is third-party
First-party Third-party 347ms · 473KB · €4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 128ms | 177 KB | 36% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 126ms | 149 KB | 36% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 93ms | 147 KB | 44% | €1/mo | Optional |
Google Tag Manager
Tag Manager
Execution 128ms
Transfer 177 KB
Unused 36%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Execution 126ms
Transfer 149 KB
Unused 36%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Execution 93ms
Transfer 147 KB
Unused 44%
Monthly Cost €1/mo
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
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
This origin passes Core Web Vitals assessment
Image Optimization44 images, 91 KB total, 10 KB wastedINFO
Image Optimization
44 images, 91 KB total, 10 KB wasted
Image Optimization Audit
Total Images
44
Total Size
91 KB
Oversized
1
Wasted
10 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.