Performance
· 22 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.
7.91 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.29 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
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.
9.84 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.
8.29 s
Page Load Progression
DPage Weight BudgetAction2.3 MB transferred, 71 requestsFIX
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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction15 scripts, 689 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js | 374 KB | 179 KB (48%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js | 0 KB | 179 KB (48%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js | 373 KB | 179 KB (48%) | ✓ | 3rd |
| https://www.xbiz.com/static/js/main.js?03082025 | 85 KB | 66 KB (78%) | ✓ | 3rd |
| https://www.xbiz.com/static/jquery-ui-1.12.1.custom/jquery-ui.js?v2 | 71 KB | 48 KB (68%) | ✗ | 3rd |
| https://cdn.jsdelivr.net/npm/@fancyapps/ui@5.0/dist/fancybox/fancybox.umd.js | 43 KB | 38 KB (89%) | ✓ | 3rd |
| https://www.xbiz.com/static/js/theme.js?03082025 | 8 KB | — | ✓ | 3rd |
| https://www.xbiz.com/static/js/lazyloading.js?17072024 | 10 KB | — | ✓ | 3rd |
| https://www.google.com/recaptcha/api.js?onload=RenderRecaptchas&render=explicit&hl=en | 1 KB | — | ✓ | 3rd |
| https://cdn.jsdelivr.net/gh/orestbida/cookieconsent@v3.0.1/dist/cookieconsent.umd.js | 11 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
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
FPage Weight InventoryAction71 resources · 2.3 MB · 689 KB savings availableFIX
~689.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 71 resources | 2.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization37 images, 0 KB saveableREVIEW
BJS Execution Cost533ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.xbiz.com/ | 154ms | 2ms | 1ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/A7KpaEASfhDcK0nXxgQEyyYv/recaptcha__en.js | 145ms | 121ms | 19ms | 3rd |
| https://www.xbiz.com/static/js/main.js?03082025 | 92ms | 32ms | 1ms | 3rd |
| Unattributable | 91ms | 1ms | 0ms | 1st |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 50ms | 30ms | 2ms | 3rd |
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
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 Loading7 fonts (173 KB)PASS
Web fonts
7
173 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~42 KB and ~84 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Network Waterfall71 requests over 26369msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.xbiz.com www.xbiz.com | Other | 154ms | 70 KB | — | €2/mo | Optional |
www.gstatic.com www.gstatic.com | Other | 145ms | 0 KB | 48% | €2/mo | Optional |
www.xbiz.com www.xbiz.com | Other | 92ms | 85 KB | 78% | €1/mo | Optional |
ajax.googleapis.com ajax.googleapis.com | Other | 50ms | 34 KB | — | €1/mo | Optional |
83% 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
78% of www.xbiz.com'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
Image Optimization51 images, 33 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
51
Total Size
33 KB