C — https://bpb.de | BeaverCheck Audit

Site Health

Score: 79 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Good foundation, but a few gaps could be exploited.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Lean and efficient — low environmental impact per visit.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Drupal · 277 peers

You 79

Avg 73

+6 above average

0 50 100

Better than 96% of Drupal sites See full Drupal benchmark →

Bulma · 271 peers

You 79

Avg 74

At average

0 50 100

Better than 87% of Bulma sites See full Bulma benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

52 third-party resources (100% of weight)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Inventory

Cross-Origin-Embedder-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

Cross-Origin-Opener-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Embed this badge

Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fbpb.de)](https://beavercheck.com/results/2b4deec2-8194-4b4e-bc68-6f2f92483e22)

HTML

<a href="https://beavercheck.com/results/2b4deec2-8194-4b4e-bc68-6f2f92483e22"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fbpb.de" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fbpb.de

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 7.1s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Addressing the critical issues below would have the most immediate impact on your user trust.

4 security gaps detected — browsers may warn visitors about your site.

Your LCP is 7.1s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

Could reach Estimate based on resolving critical issues

Conversion Barriers

2 critical 4 warning

6 barrier(s) likely increasing bounce by ~27%.

Speed (2)

Page takes 7.1s to load

+12% bounce

Users abandon at ~3s — you're 4.6s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 726ms

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Navigation (2)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

2 broken link(s) on the page

+3% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

€360 investment → €3,485/month returns + EUR 120,500,000 risk avoided

Payback period: < 1 month First-year ROI: +11516%

Investment

€360

4h · 5 findings

Monthly returns

€3,485 /mo

~€41,818 / year

Conversions recovered €3,485
Bandwidth savings €0.21

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
DSGVO EUR 20,000,000
EAA EUR 500,000

Payback period

0 12mo 24mo

€180 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

€360

4.0 developer hours at €90/hr

Based on Germany rates (€90/hr)

Quick wins

€180 4 fixes in ~120 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,667 / month at risk

~€120,500,003 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveDSGVOEAA

No privacy policy link detected
DSGVO: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
DSGVO: EUR 5,000 – EUR 10,000,000
Trackers detected but no cookie policy found
DSGVO: EUR 10,000 – EUR 20,000,000

+3 more

Bandwidth Waste

€0.21 /mo

2893.5 MB/mo × 0.074 EUR/GB

Optimize transfer: save ~289 KB per page load
Saves €0.21/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 2 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience.

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

5.46 s

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

7.07 s

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

726 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.

6.20 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.

7.21 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/themes/custom/bpbtheme/assets/fonts/bpb-iconfont/fonts/b...	45 ms
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	40 ms
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	40 ms
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	35 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:4.293 source:map[column:5103 line:754 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:75.41 source:map[column:1.193986e+06 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:0.682 source:map[column:932883 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:5.664 source:map[column:888604 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:8.937 source:map[column:890269 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:5.299 source:map[column:237780 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:31.954 source:map[column:237955 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:41.267 source:map[column:237993 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:22.344 source:map[column:924115 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:4.293 source:map[column:1313 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:1.998 source:map[column:924196 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:2.18 source:map[column:867502 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgestellt. `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/3/798153_homepage_topteaser_558x836.jpg?2A37F	101.9 KiB	60.4 KiB
Mitbegründer Jarosław Kaczyński ist immer noch spiritus movens der PiS, März 20… `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/6/798086_teaser_3x2_600.jpg?73E45	43.3 KiB	24.9 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:151.964 label:Time to first byte subpart:timeToFirstByte] map[duration:1238.831 label:Resource load delay subpart:resourceLoadDelay] map[duration:35.504 label:Resource load duration subpart:resourceLoadDuration] map[duration:1294.775 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgestellt.

path: 1,HTML,1,BODY,0,DIV,3,MAIN,5,SECTION,1,ARTICLE,0,FIGURE,0,PICTURE,0,IMG

selector: article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img

snippet: <img src="/cache/images/3/798153_homepage_topteaser_558x836.jpg?2A37F" alt="Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgest…" data-img-complete="true">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgestellt.

path: 1,HTML,1,BODY,0,DIV,3,MAIN,5,SECTION,1,ARTICLE,0,FIGURE,0,PICTURE,0,IMG

selector: article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img

snippet: <img src="/cache/images/3/798153_homepage_topteaser_558x836.jpg?2A37F" alt="Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgest…" data-img-complete="true">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/sites/default/files/css/css_vAJqd_SsacwAoi3OJssd70jw1Dh4...	168.4 KiB	750 ms
/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X...	362.1 KiB	1.8 s
/sites/default/files/css/css_U-UkLvIUbnReU-Iv-67uifu50PFs...	1.5 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 846 ms

URL	Time Spent
bpb.de/	846 ms
www.bpb.de/	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 750 ms 162.1 KiB

URL	Transfer Size	Est Savings
/sites/default/files/css/css_vAJqd_SsacwAoi3OJssd70jw1Dh4...	168.1 KiB	162.1 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 1.1 s 228.0 KiB

URL	Transfer Size	Est Savings
/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X...	361.8 KiB	228.0 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X...	3.8 s	1.8 s	116 ms
Unattributable	246 ms	5.7 ms	0.0 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/7873.7c795960bcb1c4fc34db.js	199 ms	104 ms	0.3 ms
/sites/default/files/css/css_vAJqd_SsacwAoi3OJssd70jw1Dh4...	152 ms	0.0 ms	0.0 ms
www.bpb.de/	144 ms	4.1 ms	2.5 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/6194.c904cddcfd75f833bcf2.js	131 ms	54 ms	0.9 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/129.2533cf01e4e8d78ff238.js	101 ms	64 ms	2.8 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/4777.65ea2899b70861fbabdc.js	99 ms	44 ms	0.3 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/6379.785f21fd8a5541d25705.js	91 ms	56 ms	0.5 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/9362.843da9bd4c6c47ac3bbe.js	91 ms	66 ms	0.3 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/7134.80cb5a2f8cb93dfa4609.js	67 ms	62 ms	0.6 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/2635.881cec12e44de38bb4b9.js	61 ms	59 ms	1.3 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/5899.0c4f92212a621ca4eb28.js	60 ms	56 ms	0.3 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/8404.57e3f29a644e4e21b15d.js	58 ms	58 ms	0.4 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/105.25fbdc481d7b74ce2596.js	56 ms	55 ms	1.1 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/6202.442f73a70b4343211e52.js	55 ms	53 ms	0.4 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/242.093611321d58f5182f0f.js	54 ms	54 ms	0.3 ms
www.bpb.de/themes/custom/bpbtheme/assets/js/1757.e1982ae50930c040b6e8.js	54 ms	52 ms	1.4 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	3.2 s
Style & Layout	1.2 s
Other	770 ms
Rendering	371 ms
Parse HTML & CSS	237 ms
Garbage Collection	192 ms
Script Parsing & Compilation	138 ms

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Handreichung „Kritische Auseinandersetzung mit Klassismus“ `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Pazifismus - mit Olaf Müller und Daniel Hedinger `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Der Titel ist von schräg verlaufenden hellgrünen Streifen umgeben. `figure.teaser-shop__picture > div.teaser-shop__picture-inner > picture.picture > img`	data:,
Audio: 70 Jahre Bundesnachrichtendienst `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Folge 6 – Lektionen für Deutschland `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Folge 4 – Zivilgesellschaft `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Timer 2026/2027 Hardcover „Fluid“ `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Wandkalender Timer 2026/2027 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Das Grundgesetz. Die Grundrechte `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Der rechte Rand Europas `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Spicker Bundeswehr `figure.teaser-shop__picture > div.teaser-shop__picture-inner > picture.picture > img`	data:,
Schicksalsjahr 1925 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Globale Monarchie `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
China und Russland `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Pazifismus `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Palästina 1936 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Use efficient cache lifetimes

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 942 KiB

●Avoid long main-thread tasks 19 long tasks found

●Avoid non-composited animations 46 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 30 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 30 ms

○INP breakdown

○User Timing marks and measures

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Hintergrund aktuell Parlamentswahl in Bulgarien Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Aus Politik und Zeitgeschichte Demografie Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Innere Sicherheit Was ist Politisch motivierte Kriminalität? Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Infografiken Zahlen zu Asyl in Deutschland Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Deutschland Archiv Hilde Eisler – ostdeutsche Kulturjournalistin Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics Debatte Externer Link: EuGH: Rüffel für Orbáns LGBTQ-Gesetz Seit 2… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics Debatte Externer Link: Portugal: Sollte Saramago Pflichtlektüre ble… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Bulgarien-Wahl: Was steht Europa mit Radew b… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Was bedeutet die Mandelson-Affäre für Starme… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Iran-Krieg: Weitere Eskalation oder Gespräch… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Iran Machtkonstante Theokratie: Iran nach 1979 Inhalt merken Irans politisches… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Israel 2025 Iran und Israel Inhalt merken Durch Unterstützung verbündeter Mili… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Hintergrund aktuell Chronik: Irans Atomprogramm Inhalt merken Um das iranische… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Israel 2025 Beziehungen zwischen den USA und Israel Inhalt merken Seit langem … `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Zahlen und Fakten Energieexport und -import Inhalt merken Werden Öl, Kohle und… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
4 Min. Audio Dauer 4 Min. Audio: 70 Jahre Bundesnachrichtendienst Inhalt merken… `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
43 Min. Audio Dauer 43 Min. Folge 6 – Lektionen für Deutschland Inhalt merken … `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
50 Min. Audio Dauer 50 Min. Folge 4 – Zivilgesellschaft Inhalt merken Autokrat… `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
einfach POLITIK Eine Einführung Inhalt merken PDF-Publikation (zum Herunterlade… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Werkstatt Das Fediverse als Raum politischer Bildung Inhalt merken Das Fediver… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Portal EU-Projekttag 2026 an Schulen Inhalt merken Jedes Jahr diskutieren deut… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Rezensiert und kuratiert Games zur politischen Bildung Inhalt merken Digitale … `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wie wir lernen Künstliche Intelligenz (KI) und Bildung Inhalt merken Künstlich… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Podium / Vortrag veranstaltet von der bpb Orte gesellschaftlicher Auseinanderse… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wahl-O-Mat veranstaltet von der bpb Workshop für den Wahl-O-Mat zur Landtagswah… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Eltern-LAN veranstaltet von der bpb Digitale Eltern-LAN am 10.06.2026 – Roblox … `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb 13. Kulturpolitischer Bundeskongres… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wahl-O-Mat veranstaltet von der bpb Workshop für den Wahl-O-Mat zur Abgeordnete… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wahl-O-Mat veranstaltet von der bpb Workshop für den Wahl-O-Mat zur Landtagswah… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Podium / Vortrag veranstaltet von der bpb zwischen/miete diskursiv mit Julia Fr… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb „Was heißt schon alt? Politische Bi… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Messe veranstaltet von der bpb Die bpb auf der Gamescom 2026 – „Democracy at Pl… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb 3. Fachtagung Politische Medienbild… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb Politische Bildung im digitalen Rau… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
kinofenster.de Inhalt merken Das filmpädagogische Online-Portal der bpb widmet… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wir waren so frei... Momentaufnahmen 1989/1990 Inhalt merken Das Internet-Achi… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
App "Berliner Mauer" Inhalt merken Neue Tour durch Kreuzberg-Friedrichshain: V… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Jugendopposition in der DDR Inhalt merken Wie haben junge Menschen in der DDR … `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
spielbar.de Inhalt merken spielbar.de informiert über Computerspiele und erste… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

●`[role]`s are contained by their required parent element

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

100

Best Practices

General

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

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

1.28 s

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

1.71 s

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

37 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.

1.40 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.

1.71 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	35 ms
/themes/custom/bpbtheme/assets/fonts/bpb-iconfont/fonts/b...	35 ms
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	30 ms
/themes/custom/bpbtheme/assets/fonts/MessinaSansWeb/Messi...	30 ms

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:28.456 source:map[column:5103 line:754 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:23.148 source:map[type:text value:[unattributed]]] map[reflowTime:44.356 source:map[column:1.193986e+06 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:6.445 source:map[column:932883 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:4.045 source:map[column:888604 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:7.961 source:map[column:890269 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:2.452 source:map[column:985158 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:3.524 source:map[column:997463 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:28.456 source:map[column:1313 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:4.672 source:map[column:1.015013e+06 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:1.696 source:map[column:889044 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:5.464 source:map[column:237780 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:21.575 source:map[column:237955 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:26.009 source:map[column:237993 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]] map[reflowTime:14.372 source:map[column:924115 line:753 type:source-location url:https://www.bpb.de/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X-RkN2cqHjQhEM.js urlProvider:network]]]

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgestellt.

path: 1,HTML,1,BODY,0,DIV,3,MAIN,5,SECTION,1,ARTICLE,0,FIGURE,0,PICTURE,0,IMG

selector: article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img

snippet: <img src="/cache/images/3/798153_teaser_16x9_1240.jpg?C6487" alt="Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgest…" data-img-complete="true">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X...	362.1 KiB	280 ms
/sites/default/files/css/css_vAJqd_SsacwAoi3OJssd70jw1Dh4...	168.4 KiB	160 ms
/sites/default/files/css/css_U-UkLvIUbnReU-Iv-67uifu50PFs...	1.5 KiB

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Neben einer großflächigen Photovoltaikanlage sind Batteriespeicher aufgestellt. `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/3/798153_teaser_16x9_1240.jpg?C6487	187.9 KiB	66.7 KiB
Cover Aus Politik und Zeitgeschichte, Heft 17/2026: Demografie `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/8/798158_teaser_publikation_400.jpg?96036	28.7 KiB	11.4 KiB
Frontansicht des bulgarischen Parlamentsgebäudes. `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/3/798193_teaser_3x2_400.jpg?6C56A	25.2 KiB	7.9 KiB
Mitbegründer Jarosław Kaczyński ist immer noch spiritus movens der PiS, März 20… `article.teaser-backdrop > figure.teaser-backdrop__picture > picture.picture > img`	www.bpb.de/cache/images/6/798086_teaser_3x2_400.jpg?B5CB2	22.7 KiB	5.5 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 292 ms

URL	Time Spent
bpb.de/	292 ms
www.bpb.de/	0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 160 ms 156.8 KiB

URL	Transfer Size	Est Savings
/sites/default/files/css/css_vAJqd_SsacwAoi3OJssd70jw1Dh4...	168.1 KiB	156.8 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 160 ms 222.6 KiB

URL	Transfer Size	Est Savings
/sites/default/files/js/js_dK60XH05EgZeeV86BHWie9c_QkiB_X...	361.8 KiB	222.6 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Handreichung „Kritische Auseinandersetzung mit Klassismus“ `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Der Titel ist von schräg verlaufenden hellgrünen Streifen umgeben. `figure.teaser-shop__picture > div.teaser-shop__picture-inner > picture.picture > img`	data:,
Pazifismus - mit Olaf Müller und Daniel Hedinger `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Audio: 70 Jahre Bundesnachrichtendienst `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Folge 6 – Lektionen für Deutschland `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Folge 4 – Zivilgesellschaft `div.teaser-media-indicator-swap__picture-wrapper > figure.teaser-media-indicator-swap__picture > picture.picture > img`	data:,
Timer 2026/2027 Hardcover „Fluid“ `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Wandkalender Timer 2026/2027 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Das Grundgesetz. Die Grundrechte `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Schicksalsjahr 1925 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Globale Monarchie `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
China und Russland `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Der rechte Rand Europas `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Pazifismus `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Palästina 1936 `div.scroller__item > div.scroller-gallery__transformer > picture.picture > img`	data:,
Spicker Bundeswehr `figure.teaser-shop__picture > div.teaser-shop__picture-inner > picture.picture > img`	data:,

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Time to Interactive 1.7 s

●Use efficient cache lifetimes

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,063 KiB

●JavaScript execution time 0.5 s

●Minimizes main-thread work 1.7 s

●Avoid long main-thread tasks 3 long tasks found

●Avoid non-composited animations 44 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 30 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 30 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○User Timing marks and measures

Accessibility

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Themen Mediathek Shop Lernen Veranstaltungen kurz&knapp die bpb mehr ein oder … `div.nav-burger__content > div > nav.nav > div.nav__foundation`

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Innere Sicherheit Was ist Politisch motivierte Kriminalität? Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Infografiken Zahlen zu Asyl in Deutschland Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Deutschland Archiv Hilde Eisler – ostdeutsche Kulturjournalistin Inhalt merken `div#scroller-121 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Bulgarien-Wahl: Was steht Europa mit Radew b… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Was bedeutet die Mandelson-Affäre für Starme… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
euro\|topics-Debatte Externer Link: Iran-Krieg: Weitere Eskalation oder Gespräch… `div#carousel-35334 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Hintergrund aktuell Chronik: Irans Atomprogramm Inhalt merken Um das iranisch… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Israel 2025 Beziehungen zwischen den USA und Israel Inhalt merken Seit langem… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Zahlen und Fakten Energieexport und -import Inhalt merken Werden Öl, Kohle un… `div#carousel-45786 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
4 Min. Audio Dauer 4 Min. Audio: 70 Jahre Bundesnachrichtendienst Inhalt merke… `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
43 Min. Audio Dauer 43 Min. Folge 6 – Lektionen für Deutschland Inhalt merken … `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
50 Min. Audio Dauer 50 Min. Folge 4 – Zivilgesellschaft Inhalt merken Autokra… `div#scroller-37212 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Portal EU-Projekttag 2026 an Schulen Inhalt merken Jedes Jahr diskutieren deu… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Rezensiert und kuratiert Games zur politischen Bildung Inhalt merken Digitale… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wie wir lernen Künstliche Intelligenz (KI) und Bildung Inhalt merken Künstlic… `div#carousel-35273 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Eltern-LAN veranstaltet von der bpb Digitale Eltern-LAN am 10.06.2026 – Roblox … `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb 13. Kulturpolitischer Bundeskongres… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wahl-O-Mat veranstaltet von der bpb Workshop für den Wahl-O-Mat zur Abgeordnete… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Wahl-O-Mat veranstaltet von der bpb Workshop für den Wahl-O-Mat zur Landtagswah… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Podium / Vortrag veranstaltet von der bpb zwischen/miete diskursiv mit Julia Fr… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb „Was heißt schon alt? Politische Bi… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Messe veranstaltet von der bpb Die bpb auf der Gamescom 2026 – „Democracy at Pl… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb 3. Fachtagung Politische Medienbild… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Konferenz / Tagung veranstaltet von der bpb Politische Bildung im digitalen Rau… `div#carousel-45284 > div.flickity-viewport > div.flickity-slider > div.scroller__item`
App "Berliner Mauer" Inhalt merken Neue Tour durch Kreuzberg-Friedrichshain: … `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
Jugendopposition in der DDR Inhalt merken Wie haben junge Menschen in der DDR… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`
spielbar.de Inhalt merken spielbar.de informiert über Computerspiele und erst… `div#carousel-is-white > div.flickity-viewport > div.flickity-slider > div.scroller__item`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]`s are contained by their required parent element

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

100

Best Practices

General

Why this matters

Performance issues directly impact user engagement and conversion rates.

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

100

SEO

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

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