Performance
· 26 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.
2.98 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.37 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
5.11 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.50 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.
15.61 s
Page Load Progression
FJS Execution CostAction40155ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://marketxy.com/ | 24131ms | 93ms | 11ms | 1st |
| https://marketxy.com/_next/static/chunks/31255-070f91cd6659c01a.js | 5286ms | 4115ms | 22ms | 1st |
| https://marketxy.com/_next/static/chunks/52271efe-eefc201eaf5942c9.js | 3207ms | 2030ms | 36ms | 1st |
| https://marketxy.com/_next/static/chunks/4bd1b696-bad92808725a934a.js | 3042ms | 1598ms | 23ms | 1st |
| Unattributable | 2087ms | 120ms | 0ms | 1st |
| https://marketxy.com/lm38/ptiPfg0fCl2TkQR1JY37Eqex4onBO4OhEVk-2_vzkaBzf6eX | 727ms | 557ms | 94ms | 1st |
| https://marketxy.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 446ms | 432ms | 3ms | 1st |
| https://marketxy.com/_next/static/chunks/c473e9eb-08d588f1e54e32c7.js | 420ms | 340ms | 79ms | 1st |
| https://scripts.clarity.ms/0.8.67/clarity.js | 380ms | 313ms | 10ms | 3rd |
| https://marketxy.com/lm38/ | 239ms | 183ms | 53ms | 1st |
Showing top 10 of 12 scripts
DPage Weight InventoryAction126 resources · 1.6 MB · 265 KB savings availableFIX
~265.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 126 resources | 1.6 MiB | ||||||
CPage Weight BudgetAction1.6 MB transferred, 126 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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
BImage Optimization6 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
CJS BundlesAction36 scripts, 265 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-WTHKZGJN | 112 KB | 71 KB (64%) | ✓ | 3rd |
| https://marketxy.com/lm38/ | 125 KB | 65 KB (52%) | ✓ | 1st |
| https://marketxy.com/lm38/ptiPfg0fCl2TkQR1JY37Eqex4onBO4OhEVk-2_vzkaBzf6eX | 193 KB | 62 KB (32%) | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/52271efe-eefc201eaf5942c9.js | 98 KB | 34 KB (35%) | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/c473e9eb-08d588f1e54e32c7.js | 116 KB | 33 KB (29%) | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/69b09407-00c3f7c23fba3ebe.js | 5 KB | — | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/55131-ab615a739cbc3f71.js | 13 KB | — | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/app/layout-b8ef27c702ab95a0.js | 4 KB | — | ✓ | 1st |
| https://marketxy.com/_next/static/chunks/main-app-9a791045675043cc.js | 1 KB | — | ✓ | 1st |
| https://marketxy.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js | 1 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
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
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
BHTTP Cachings-maxage=3600, stale-while-revalidate=31532400REVIEW
s-maxage=3600, stale-while-revalidate=31532400
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 3600 | CDN caches for 1 hour |
| stale-while-revalidate | 31532400 | Serve stale for 52 weeks while fetching fresh |
AThird-Party Impact30% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading12 fonts (264 KB)PASS
Web fonts
12
264 KB total
Render-blocking
0
of 12
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 Hints11 hints, 0 missing preconnectsPASS
Current Resource Hints
11 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /_next/static/media/0b78ff376f6b9734-s.p.woff2, /_next/static/media/210398b63ea2710a-s.p.woff2, /_next/static/media/2c9c931231733a6e-s.p.woff2 (+7 more). Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) 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 Waterfall126 requests over 42996msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Microsoft Clarity scripts.clarity.ms | Session Replay | 380ms | 25 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 125ms | 112 KB | 64% | €1/mo | Optional |
These scripts may cost more than they're worth
- Microsoft Clarity adds 380ms and costs ~€2/month
Microsoft Clarity takes 380ms 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
64% 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 (2026-06-29 — 2026-07-26)
LCP (p75)
3265 ms
62% good
INP (p75)
145 ms
85% good
CLS (p75)
0.020
91% good
FCP (p75)
2792 ms
TTFB (p75)
1913 ms