Performance

· 17 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.

3.36 s

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

10.79 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.

0.060

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

3.36 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.

11.02 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 s

Checks

7 PASS 6 REVIEW 2 FIX

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 (1.7 MiB of 1.7 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

Page Weight Inventory

Action

56 resources · 1.7 MB · 57 KB savings available

FIX

56 resources · 1.7 MB · 57 KB savings available

Page weight 688 KB over 1MB target

Got: 1.7 MB Expected: ≤ 1 MB

~57 KB of savings available

55 third-party resources (100% of weight)

1 resources over 200KB

56 resources · 1.7 MiB · 55 third-party 688.2 KiB over 1MB target

Image 87% · 1.5 MiB

JavaScript 6% · 106.2 KiB

CSS 3% · 52.7 KiB

Font 2% · 39.8 KiB

Document 1% · 20.8 KiB

Other 0% · 815 B

~56.7 KiB of savings available

Remove unused JavaScript: 56.7 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

56 resources			1.7 MiB

Page Weight Budget

Action

1.7 MB transferred, 56 requests

REVIEW

1.7 MB transferred, 56 requests

Page weighs 2.4 MB (1.7 MB transferred)

Images are 1.4 MB — compress or use modern formats

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

Got: 1.4 MB

56 HTTP requests

Estimated 0.35 g CO2 per page load

1.7 MB transferred

56 requests

0.35 g CO2 per page load

Images 1.4 MiB 87%

JavaScript 106.2 KiB 6%

CSS 52.7 KiB 3%

Fonts 39.8 KiB 2%

HTML 20.3 KiB 1%

Other 8.1 KiB 0%

Other 815 B 0%

0 2.4 MB 4.9 MB

Approaching limit

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

Image Optimization

43 images, 0 KB saveable

REVIEW

43 images, 0 KB saveable

is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

43 images 1.4 MB

0 oversized -0 KB

41 legacy format

1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

JS Execution Cost

652ms total JS execution

REVIEW

652ms total JS execution

Unattributable: 402ms CPU time

https://www.rlp.de/: 250ms CPU time

Third-party scripts: 652ms (100% of total)

Main Thread Breakdown

Other 51% Style & Layout 26% Script Evaluation 10% Parse HTML & CSS 5% Rendering 5% Script Parsing & Compilation 4%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	402ms	7ms	0ms	3rd
https://www.rlp.de/	250ms	7ms	1ms	3rd

JS Bundles

4 scripts, 57 KB unused

REVIEW

4 scripts, 57 KB unused

https://www.rlp.de/_assets/90e5b5e0fb243702058dd4a...: 57 KB unused (86%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 57 KB

57 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.rlp.de/_assets/90e5b5e0fb243702058dd4a76da35c8b/JavaScript/libs.min.js?1776752531	67 KB	57 KB (86%)	✓	3rd
https://www.rlp.de/_assets/90e5b5e0fb243702058dd4a76da35c8b/JavaScript/headerBundle.min.js?1776752558	9 KB	—	✓	3rd
https://www.rlp.de/_assets/90e5b5e0fb243702058dd4a76da35c8b/JavaScript/vendorBundle.min.js?1776752530	23 KB	—	✓	3rd
https://www.rlp.de/_assets/90e5b5e0fb243702058dd4a76da35c8b/JavaScript/footerBundle.min.js?1776671096	6 KB	—	✓	3rd

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

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

max-age=0

REVIEW

max-age=0

Cache-Control header is set

Got: max-age=0

No ETag or Last-Modified header

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

Cache-Control

max-age=0

Directive	Value	Meaning
max-age	0	Cache for 0 seconds

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

3 fonts (40 KB)

PASS

3 fonts (40 KB)

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

Web fonts

40 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

open-sans-v27-latin-reg... woff2 swap

Size 17 KB

Load time 57 ms

Start 367 ms

Risk FOUT — text flashes from fallback to web font

open-sans-v27-latin-700... woff2 swap

Size 17 KB

Load time 30 ms

Start 367 ms

Risk FOUT — text flashes from fallback to web font

rlp-i.ttf ttf swap

Size 6 KB

Load time 38 ms

Start 367 ms

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 ~2 KB and ~4 ms

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

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

Network Waterfall

56 requests over 656ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

100% of JavaScript execution is third-party

First-party Third-party 652ms · 20KB · €7/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	402ms	0 KB	—	€4/mo	Costly
www.rlp.de www.rlp.de	Other	250ms	20 KB	—	€3/mo	Costly

Unattributable

Other

Costly

Execution 402ms

Transfer 0 KB

Monthly Cost €4/mo

www.rlp.de

Other

Costly

Execution 250ms

Transfer 20 KB

Monthly Cost €3/mo

These scripts may cost more than they're worth

Unattributable adds 402ms and costs ~€4/month
www.rlp.de adds 250ms and costs ~€3/month

100% 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

Unattributable takes 402ms 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.rlp.de takes 250ms 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

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