Performance
· 21 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.
515 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.08 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.
0.024
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.36 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.
2.11 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 42 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization5 images, 0 KB saveableREVIEW
CJS BundlesAction27 scripts, 202 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://trainingmithaltung.de/wp-includes/js/mediaelement/mediaelement-and-player.min.js?ver=4.2.17 | 154 KB | 126 KB (82%) | ✓ | 1st |
| https://trainingmithaltung.de/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 86 KB | 39 KB (45%) | ✓ | 1st |
| https://matomo.maik-endler.de/matomo.js | 67 KB | 38 KB (56%) | ✓ | 3rd |
| https://trainingmithaltung.de/wp-content/themes/Divi/includes/builder-5/visual-builder/build/module-library-script-blog.js?ver=5.9.0 | 2 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-content/themes/Divi/includes/builder-5/visual-builder/build/script-library-section-dividers.js?ver=5.9.0 | 2 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-content/themes/Divi/includes/builder-5/visual-builder/build/script-library-ext-waypoint.js?ver=5.9.0 | 9 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-content/themes/Divi/js/theme-scripts-library-menu.js?ver=5.9.0 | 9 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-includes/js/mediaelement/mediaelement-migrate.min.js?ver=7.0.2 | 1 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-includes/js/mediaelement/wp-mediaelement.min.js?ver=7.0.2 | 1 KB | — | ✓ | 1st |
| https://trainingmithaltung.de/wp-content/themes/Divi/includes/builder-5/visual-builder/build/script-library-audio.js?ver=5.9.0 | 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction42 resources · 2.4 MB · 202 KB savings availableREVIEW
~202.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 42 resources | 2.4 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact3% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost171ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://trainingmithaltung.de/ | 94ms | 7ms | 2ms | 1st |
| Unattributable | 77ms | 3ms | 0ms | 1st |
A+Font Loading2 fonts (413 KB)PASS
Web fonts
2
413 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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
- 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 ~286 KB and ~572 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 Intelligence2 server-response signal(s) detectedPASS
Network Waterfall42 requests over 1547msINFO
Image Optimization8 images, 259 KB total, 249 KB wastedINFO
Image Optimization Audit
Total Images
8
Total Size
259 KB
Oversized
2
Wasted
249 KB