bits-und-baeume.org

Ranks Overall #1,674 Built Awesome #1,083

Data from Oct 2, 2026, 11:08 PM UTC 5d old Measured once a week · 7 runs since Aug 20, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Built with Eleventy 2.0.1

Hosted by Self-hosted

Lighthouse Scores LAB Simulated

Performance

↓ -25 (-25.8%)

Accessibility

no change

100

Best Practices

no change

SEO

no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric	Lab Simulated
LCP CWV (estimate) Largest Contentful Paint	18.41 s poor	↑ +16334 ms (+785.7%) significant 2.08 s – 18.61 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—
CLS CWV (estimate) Cumulative Layout Shift	0 good	↓ -0.001 (-100%) 0 – 0.001
TBT Total Blocking Time	1 ms good	→ no change 0 ms – 10 ms
FCP First Contentful Paint	1.59 s good	↓ -248 ms (-13.5%) 1.33 s – 1.84 s
Speed Index	4.15 s needs work	↑ +1455 ms (+54%) 2.44 s – 4.16 s
TTFB Time to First Byte	1.24 s needs work	↓ -241 ms (-16.3%) 986 ms – 1.48 s

Metric

Lab Simulated

Value

Change / range

Trend

LCP CWV (estimate) Largest Contentful Paint

18.41 s poor

↑ +16334 ms (+785.7%) significant 2.08 s – 18.61 s

INP CWV Interaction to Next Paint — field only, no lab run can measure it

n/a

—

CLS CWV (estimate) Cumulative Layout Shift

0 good

↓ -0.001 (-100%) 0 – 0.001

TBT Total Blocking Time

1 ms good

→ no change 0 ms – 10 ms

FCP First Contentful Paint

1.59 s good

↓ -248 ms (-13.5%) 1.33 s – 1.84 s

Speed Index

4.15 s needs work

↑ +1455 ms (+54%) 2.44 s – 4.16 s

TTFB Time to First Byte

1.24 s needs work

↓ -241 ms (-16.3%) 986 ms – 1.48 s

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 2.17 s

time to first byte 324 ms

Page weight

Metric	Value	Change / range
Page Weight	6.84 MB	↓ -23 B 6.84 MB – 6.84 MB
Requests	64	→ no change 64 – 64
Third-party Weight	0 B	→ no change 0 B – 0 B
Third-party CPU	0 ms	→ no change 0 ms – 0 ms
Unused JS	0 B	→ no change 0 B – 0 B
Unused CSS	0 B	→ no change 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

6.84 MB

↓ -23 B 6.84 MB – 6.84 MB

Requests

→ no change 64 – 64

Third-party Weight

0 B

→ no change 0 B – 0 B

Third-party CPU

0 ms

→ no change 0 ms – 0 ms

Unused JS

0 B

→ no change 0 B – 0 B

Unused CSS

0 B

→ no change 0 B – 0 B

By resource type

Type	Share	Size	Requests
image	99.7%	6.81 MB	60
document	0.2%	16.0 kB	1
stylesheet	0.1%	4.6 kB	1
other	<0.1%	587 B	1
Total		6.84 MB	64

Page health

Metric	Value	Change / range
Main Thread Work	623 ms	↓ -234 ms (-27.3%) significant 620 ms – 857 ms
Long Tasks	2	→ no change 1 – 2
DOM Elements	833	→ no change 833 – 833
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	54	→ no change 54 – 54
A11y Failures	3	→ no change 3 – 3
A11y Failing Nodes	59	→ no change 59 – 59

Metric

Value

Change / range

Trend

Main Thread Work

623 ms

↓ -234 ms (-27.3%) significant 620 ms – 857 ms

Long Tasks

→ no change 1 – 2

DOM Elements

833

→ no change 833 – 833

Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)

→ no change 54 – 54

A11y Failures

→ no change 3 – 3

A11y Failing Nodes

→ no change 59 – 59

Main thread work

Task	Share	Duration Simulated
other	68%	422 ms
style layout	21%	131 ms
parse HTML	5%	33 ms
paint composite render	4%	24 ms
script evaluation	2%	13 ms
script parse compile	0%	1 ms
Total		623 ms

Task

Time

Duration Simulated

other

68%

422 ms

style layout

21%

131 ms

parse HTML

33 ms

paint composite render

24 ms

script evaluation

13 ms

script parse compile

1 ms

Total

623 ms

Axe violations axe-core 4.13.0, full rule set

54 violating nodes across 4 rules, 1596 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

critical image-alt — Images must have alternative text 37 nodes
Offending elements (5 of 37)
1. section:nth-child(2) > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(1) > .box__pixel > img[widht="50"][height="40"]
```
<img src="/assets/images/pixel-box-img.svg" widht="50" height="40">
```
2. section:nth-child(2) > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(2) > .box__pixel > img[widht="50"][height="40"]
```
<img src="/assets/images/pixel-box-img.svg" widht="50" height="40">
```
3. section:nth-child(2) > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(3) > .box__pixel > img[widht="50"][height="40"]
```
<img src="/assets/images/pixel-box-img.svg" widht="50" height="40">
```
4. .max-w-6xl > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(1) > .box__pixel > img[widht="50"][height="40"]
```
<img src="/assets/images/pixel-box-img.svg" widht="50" height="40">
```
5. .max-w-6xl > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(2) > .box__pixel > img[widht="50"][height="40"]
```
<img src="/assets/images/pixel-box-img.svg" widht="50" height="40">
```

serious link-name — Links must have discernible text 15 nodes

Offending elements (5 of 15)

section:nth-child(2) > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(3) > .box__image.md\:w-2\/5.w-full > a

<a href="/posts/B&amp;B_NRW_PolitischeForderungen_2026_html/"> <img class="object-cover" src="/assets/images/gt--B&amp;B_NRW_Forderungen_Front.png" alt="" sizes="(min-width: 780px) 280px, 93.04vw" da…

.max-w-6xl > div[flex-wrap=""] > .box-img.md\:flex-nowrap.gap-x-5:nth-child(2) > .box__image.md\:w-2\/5.w-full > a

<a href="/blog/social-media-alternativen/"> <img class="object-cover" src="/assets/images/gt--handy.jpg" alt="" sizes="(min-width: 780px) 280px, 93.04vw" data-img2picture-widths="280,400,670,800"> </…

.box-img.md\:flex-nowrap.gap-x-5:nth-child(5) > .box__image.md\:w-2\/5.w-full > a

<a href="/blog/neujahrsempfang2026_bericht/"> <img class="object-cover" src="/assets/images/gt--neujahr.jpg" alt="" sizes="(min-width: 780px) 280px, 93.04vw" data-img2picture-widths="280,400,670,800"…

.box__image.md\:w-2\/5.w-full > a[href$="39c3_rueckblick/"]

<a href="/blog/39c3_rueckblick/"> <img class="object-cover" src="/assets/images/gt--39c3.jpg" alt="" sizes="(min-width: 780px) 280px, 93.04vw" data-img2picture-widths="280,400,670,800"> </a>

.box-img.md\:flex-nowrap.gap-x-5:nth-child(10) > .box__image.md\:w-2\/5.w-full > a
```
<a href="/posts/bildung-bits-baeume-nrw-rueckblick/">
```

minor aria-allowed-role — ARIA role should be appropriate for the element 1 node
Offending element
1. .menu__button
```
<img class="menu__button" src="/assets/images/menu-button.svg" alt="menu button" role="presentation">
```

moderate region — All page content should be contained by landmarks 1 node

Offending element

.back-to-top

<div class="back-to-top"> <a href="#header"> <img class="hover:scale-125 hover:transform-gpu duration-50" src="/assets/images/up-arrow.svg" alt="back to top"> </a> </div>

Accessibility failures 3 of 21 audits

image-alt — Image elements do not have `[alt]` attributes 37 nodes
link-name — Links do not have a discernible name 15 nodes
target-size — Touch targets do not have sufficient size or spacing. 7 nodes

SEO failures 6 of 10 audits

meta-description — Document does not have a meta description
link-text — Links do not have descriptive text 26 items
robots-txt — robots.txt is not valid 1 item
image-alt — Image elements do not have `[alt]` attributes 37 items
hreflang — Document doesn't have a valid `hreflang` 3 items
canonical — Document does not have a valid `rel=canonical`

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 2, 2026, 11:08 PM UTC	72	18.41 s	0	1 ms	6.84 MB	3/3	±24	2,489 0%	37.3s	Wayback
Sep 25, 2026, 11:17 AM UTC	97	2.08 s	0.001	1 ms	6.84 MB	3/3	±6	2,245 -10%	36.6s	Wayback
Sep 18, 2026, 8:50 AM UTC	72	18.61 s	0	0 ms	6.84 MB	3/3	±21	2,458 -1%	37.1s	Wayback
Sep 11, 2026, 8:39 AM UTC	73	18.33 s	0	10 ms	6.84 MB	3/3	±23	2,654 +7%	35.9s	Wayback
Sep 4, 2026, 5:36 AM UTC	72	18.40 s	0	0 ms	6.84 MB	3/3	±22	2,473 -1%	36.6s	Wayback
Aug 28, 2026, 1:19 AM UTC	75	18.16 s	0.001	0 ms	6.84 MB	3/3	±23	2,342 -6%	32.3s	Wayback
Aug 20, 2026, 7:07 PM UTC	72	18.42 s	0	0 ms	6.84 MB	3/3	±21	2,463 -1%	37.5s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB

LCP Subparts LAB 🐇 Unthrottled

Page weight

By resource type

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 3 of 21 audits

SEO failures 6 of 10 audits

Hygiene

Measurement log

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled