Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop

Performance

Accessibility

Best Practices

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.11 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.32 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

11 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.20 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.

2.35 s

Page Load Progression

464 ms

927 ms

1.4 s

1.9 s

2.3 s

2.8 s

3.2 s

3.7 s

Checks

11 PASS 5 REVIEW 4 FIX

Page Weight Budget

Action

3.9 MB transferred, 46 requests

FIX

3.9 MB transferred, 46 requests

Page weighs 4.6 MB (3.9 MB transferred)

Images are 3.3 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 3.3 MB

Fonts are 328 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 328 KB

46 HTTP requests

Estimated 0.82 g CO2 per page load

3.9 MB transferred

46 requests

0.82 g CO2 per page load

Images 3.3 MiB 84%

Fonts 327.9 KiB 8%

JavaScript 171.6 KiB 4%

CSS 103.2 KiB 3%

HTML 24.7 KiB 1%

Other 4.2 KiB 0%

Other 1.1 KiB 0%

0 2.4 MB 4.9 MB

Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

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.

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

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (3.9 MiB of 3.9 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

Page Weight Inventory

Action

46 resources · 3.9 MB · 0 KB savings available

FIX

46 resources · 3.9 MB · 0 KB savings available

Page weight 3.9 MB exceeds 1 MB target by 2.9 MB

Got: 3.9 MB Expected: ≤ 1 MB

45 third-party resources (100% of weight)

3 resources over 200KB

46 resources · 3.9 MiB · 45 third-party 2.9 MiB over 1MB target

Image 84% · 3.3 MiB

Font 8% · 327.9 KiB

JavaScript 4% · 171.6 KiB

CSS 3% · 103.2 KiB

Document 1% · 25.8 KiB

Other 0% · 1.1 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

46 resources			3.9 MiB

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-store, no-cache, must-revalidate, max-age=0

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

no-store, no-cache, must-revalidate, max-age=0

Directive	Value	Meaning
no-store	—	Never cache this response
no-cache	—	Cache but always revalidate first
must-revalidate	—	Must recheck with server after expiry
max-age	0	Cache for 0 seconds

Image Optimization

13 images, 0 KB saveable

REVIEW

13 images, 0 KB saveable

https://www.filipnet.de/wp-content/uploads/2018/05... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

13 images 3.3 MB

0 oversized -0 KB

11 legacy format

1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

JS Execution Cost

Action

1053ms total JS execution

REVIEW

1053ms total JS execution

https://www.filipnet.de/wp-includes/js/jquery/jque...: 524ms CPU time

https://www.filipnet.de/: 238ms CPU time

https://www.filipnet.de/wp-content/themes/yuki/dis...: 198ms CPU time

Unattributable: 94ms CPU time

Third-party scripts: 959ms (91% of total)

Main Thread Breakdown

Script Evaluation 44% Other 34% Style & Layout 14% Rendering 3%

Script	Total	Scripting	Parse/Compile	Party
https://www.filipnet.de/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	524ms	306ms	1ms	3rd
https://www.filipnet.de/	238ms	3ms	1ms	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/vendor/particles/tsparticles.bundle.min.js?ver=1.4.18	198ms	135ms	3ms	3rd
Unattributable	94ms	4ms	0ms	1st

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

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.

Document Compression

Action

Document response served uncompressed

REVIEW

Document response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

Server-Timing Observability

No Server-Timing header found

REVIEW

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.

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

4 fonts (328 KB)

PASS

4 fonts (328 KB)

4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

328 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

fa-solid-900.woff2 woff2 swap

Size 155 KB

Load time 74 ms

Start 1.0 s

Risk FOUT — text flashes from fallback to web font

Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need

fa-brands-400.woff2 woff2 swap

Size 116 KB

Load time 109 ms

Start 1.0 s

Risk FOUT — text flashes from fallback to web font

Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need

fa-regular-400.woff2 woff2 swap

Size 26 KB

Load time 113 ms

Start 1.0 s

Risk FOUT — text flashes from fallback to web font

x-font-woff;charset=utf... woff swap

Size 31 KB

Load time 6 ms

Start 1.4 s

Risk FOUT — text flashes from fallback to web font

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 ~145 KB and ~290 ms

JS Bundles

15 scripts, 0 KB unused

PASS

15 scripts, 0 KB unused

https://www.filipnet.de/wp-content/plugins/dsgvo-a...: unminified — 6 KB could be saved

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.filipnet.de/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	31 KB	—	✓	3rd
https://www.filipnet.de/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1	6 KB	—	✓	3rd
https://www.filipnet.de/wp-content/plugins/dsgvo-all-in-one-for-wp/assets/js/tarteaucitron/tarteaucitron.min.js?ver=1.0	18 KB	—	✗	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/vendor/hc-sticky/hc-sticky.min.js?ver=1.4.18	5 KB	—	✓	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/vendor/superfish/superfish.min.js?ver=1.4.18	3 KB	—	✓	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/vendor/scrollreveal/scrollreveal.min.js?ver=1.4.18	7 KB	—	✓	3rd
https://www.filipnet.de/wp-includes/js/imagesloaded.min.js?ver=5.0.0	3 KB	—	✓	3rd
https://www.filipnet.de/wp-includes/js/masonry.min.js?ver=4.2.2	8 KB	—	✓	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/js/app.min.js?ver=1.4.18	7 KB	—	✓	3rd
https://www.filipnet.de/wp-content/themes/yuki/dist/vendor/particles/tsparticles.bundle.min.js?ver=1.4.18	46 KB	—	✓	3rd

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

Asset Compression

1 of 1 asset host still on gzip

PASS

1 of 1 asset host still on gzip

www.filipnet.de serves assets with gzip; brotli would be ~20% smaller (assets: 50)

Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.

Got: www.filipnet.de (text/css)

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML uses no-store -- correct for sensitive/dynamic content

PASS

Main HTML uses no-store -- correct for sensitive/dynamic content

Got: no-store, no-cache, must-revalidate, max-age=0

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: User-Agent

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).

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+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: netcup GmbH

Network Waterfall

46 requests over 1419ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

91% of JavaScript execution is third-party

First-party Third-party 959ms · 101KB · €4/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.filipnet.de www.filipnet.de	Other	524ms	31 KB	—	€2/mo	Costly
www.filipnet.de www.filipnet.de	Other	238ms	25 KB	—	€1/mo	Costly
www.filipnet.de www.filipnet.de	Other	198ms	46 KB	—	€1/mo	Optional

www.filipnet.de

Other

Costly

Execution 524ms

Transfer 31 KB

Monthly Cost €2/mo

www.filipnet.de

Other

Costly

Execution 238ms

Transfer 25 KB

Monthly Cost €1/mo

www.filipnet.de

Other

Optional

Execution 198ms

Transfer 46 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

www.filipnet.de adds 524ms and costs ~€2/month
www.filipnet.de adds 238ms and costs ~€1/month

91% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

www.filipnet.de takes 524ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.filipnet.de takes 238ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Image Optimization

14 images, 2847 KB total, 1637 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

2847 KB

Oversized

Wasted

1637 KB

4 missing dimensions 4 missing lazy loading

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.