https://trainingmithaltung.de
Performance
· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
87
GRADE
B
FIX
1
REVIEW
10
PASS
12
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
70
71
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.36 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.12 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.
0.013
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.25 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.
10.12 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 sChecks
2512 PASS 10 REVIEW 1 FIX
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 BudgetAction1.7 MB transferred, 40 requestsREVIEW
Page Weight Budget
Action1.7 MB transferred, 40 requests
1.7 MB transferred, 40 requests
Info::
Page weighs 1.7 MB (1.7 MB transferred)
Info::
Fonts are 413 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 413 KB
Info::
40 HTTP requests
Info::
Estimated 0.35 g CO2 per page load
1.7 MB transferred
40 requests
0.35 g CO2 per page load
Images 611.9 KiB 36%
JavaScript 479.3 KiB 28%
Fonts 413.5 KiB 24%
CSS 167.4 KiB 10%
HTML 23.8 KiB 1%
Other 576 B 0%
Other 64 B 0%
0 2.4 MB 4.9 MB
Approaching limit
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BJS Execution Cost792ms total JS executionREVIEW
JS Execution Cost
792ms total JS execution
792ms total JS execution
Warning::
https://trainingmithaltung.de/: 350ms CPU time
Warning::
Unattributable: 266ms CPU time
Info::
https://trainingmithaltung.de/wp-includes/js/jquer...: 118ms CPU time
Info::
https://trainingmithaltung.de/wp-content/themes/Di...: 58ms CPU time
Main Thread Breakdown
Script Evaluation 34% Other 31% Style & Layout 19% Script Parsing & Compilation 6% Parse HTML & CSS 6% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://trainingmithaltung.de/ | 350ms | 9ms | 7ms | 1st |
| Unattributable | 266ms | 12ms | 0ms | 1st |
| https://trainingmithaltung.de/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 118ms | 100ms | 7ms | 1st |
| https://trainingmithaltung.de/wp-content/themes/Divi/js/theme-scripts-library-menu.js?ver=5.9.0 | 58ms | 45ms | 1ms | 1st |
CJS BundlesAction27 scripts, 202 KB unusedREVIEW
JS Bundles
Action27 scripts, 202 KB unused
27 scripts, 202 KB unused
Warning::
https://trainingmithaltung.de/wp-includes/js/media...: 126 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://trainingmithaltung.de/wp-includes/js/jquer...: 39 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://matomo.maik-endler.de/matomo.js: 38 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 202 KB
202 KB unused JavaScript
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.
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
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.
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
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.
CPage Weight InventoryAction40 resources · 1.7 MB · 202 KB savings availableREVIEW
Page Weight Inventory
Action40 resources · 1.7 MB · 202 KB savings available
40 resources · 1.7 MB · 202 KB savings available
Warning::
Page weight 1.7 MB exceeds 1 MB target by 672 KB
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~202 KB of savings available
Info::
3 third-party resources (4% of weight)
Info::
2 resources over 200KB
40 resources · 1.7 MiB · 3 third-party 672.5 KiB over 1MB target
Image 36% · 612.4 KiB
JavaScript 28% · 479.3 KiB
Font 24% · 413.5 KiB
CSS 10% · 167.4 KiB
Document 1% · 23.8 KiB
Other 0% · 64 B
~202.4 KiB of savings available
Remove unused JavaScript: 202.4 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 40 resources | 1.7 MiB | ||||||
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
24 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Third-Party Impact4% third-party, 0 ms blockingPASS
Third-Party Impact
4% third-party, 0 ms blocking
4% third-party, 0 ms blocking
Info::
Third-party code accounts for 4% of page weight (66.9 KiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
96%
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.
AImage Optimization3 images, 0 KB saveablePASS
Image Optimization
3 images, 0 KB saveable
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 612 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+Font Loading2 fonts (413 KB)PASS
Font Loading
2 fonts (413 KB)
2 fonts (413 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
413 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
modules.woff woff swap
Size 90 KB
Load time 92 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
Montserrat-Regular.ttf ttf swap
Size 323 KB
Load time 94 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
- 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
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
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 Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Info::
`Vary` header declared: User-Agent,Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
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+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
5 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Network Waterfall40 requests over 1968msINFO
Network Waterfall
40 requests over 1968ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization8 images, 259 KB total, 249 KB wastedINFO
Image Optimization
8 images, 259 KB total, 249 KB wasted
Image Optimization Audit
Total Images
8
Total Size
259 KB
Oversized
2
Wasted
249 KB
4 missing alt text 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.