Performance
· 15 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.
1.35 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.63 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.
0.007
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.57 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.
1.64 s
Page Load Progression
375 ms 750 ms 1.1 s
1.5 s
1.9 s
2.2 s 2.6 s 3.0 sDThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.0 MB transferred, 56 requestsREVIEW
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
CImage OptimizationAction15 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
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost277ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.goneo.de/ | 179ms | 20ms | 1ms | 3rd |
| Unattributable | 99ms | 4ms | 0ms | 3rd |
A+Font Loading8 fonts (447 KB)PASS
Web fonts
8
447 KB total
Render-blocking
0
of 8
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
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~149 KB and ~298 ms
A+JS Bundles19 scripts, 27 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.goneo.de/media/vendor/swiper/swiper-bundle.min.js | 42 KB | 27 KB (63%) | ✓ | 3rd |
| https://www.goneo.de/media/vendor/jquery/js/jquery.min.js?3.7.1 | 30 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/vendor/jquery/js/jquery-noconflict.min.js?3.7.1 | 0 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/vendor/jquery-migrate/js/jquery-migrate.min.js?3.6.0 | 6 KB | — | ✓ | 3rd |
| https://www.goneo.de/plugins/system/t4/themes/base/vendors/bootstrap/js/bootstrap.bundle.min.js?63a4b6 | 22 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/mod_menu/js/menu.min.js?63a4b6 | 2 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/system/js/core.min.js?a3d8f8 | 3 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/com_finder/js/finder.min.js?755761 | 1 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/system/js/messages.min.js?9a4811 | 2 KB | — | ✓ | 3rd |
| https://www.goneo.de/media/vendor/bootstrap/js/dropdown.min.js?5.3.8 | 2 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
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
APage Weight Inventory56 resources · 1.0 MB · 27 KB savings availablePASS
~26.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 56 resources | 1.0 MiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: goneo Internet GmbH
Network Waterfall56 requests over 2186msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.goneo.de www.goneo.de | Other | 179ms | 24 KB | — | €2/mo | Optional |
Unattributable Unattributable | Other | 99ms | 0 KB | — | €1/mo | Optional |
100% 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