Tools & Wizards About Us
sichere-schule.de screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sichere-schule.de

Startseite - Sichere Schule

Page Load Speed

3.9 sec in total

First Response

316 ms

Resources Loaded

2.6 sec

Page Rendered

916 ms

sichere-schule.de screenshot

About Website

Visit sichere-schule.de now to see the best up-to-date Sichere Schule content for Germany and also check out these interesting facts you probably never knew about sichere-schule.de

Unsere virtuelle „Sichere Schule“ zeigt, wie Schulen sicher und gesund gestaltet und betrieben werden können. Hinweise zu Sicherheitsorganisation, Gefährdungsbeurteilung und vieles mehr runden das Ang...

Visit sichere-schule.de

Key Findings

We analyzed Sichere-schule.de page load time and found that the first response time was 316 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

sichere-schule.de performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

0/100

25%

SI (Speed Index)

Value17.3 s

0/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.212

59/100

15%

TTI (Time to Interactive)

Value22.3 s

1/100

10%

Network Requests Diagram

sichere-schule.de

316 ms

sichere-schule.de

611 ms

vendor.min.css

301 ms

global.min.css

387 ms

portal.min.css

384 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 40% of them (21 requests) were addressed to the original Sichere-schule.de, 42% (22 requests) were made to Sish.rms2cdn.de and 13% (7 requests) were made to Cdnsh.rmsportal.de. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Sish.rms2cdn.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 267.2 kB (4%)

Content Size

7.3 MB

After Optimization

7.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sichere-schule.de main page is 7.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Images take 6.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 79.7 kB

  • Original 93.8 kB
  • After minification 67.9 kB
  • After compression 14.1 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 25.9 kB, which is 28% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 79.7 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 187.0 kB

  • Original 6.4 MB
  • After minification 6.2 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Sichere Schule images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 266 B

  • Original 687.8 kB
  • After minification 687.8 kB
  • After compression 687.6 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 252 B

  • Original 67.3 kB
  • After minification 67.3 kB
  • After compression 67.0 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Sichere-schule.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (27%)

Requests Now

48

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sichere Schule. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sichere-schule.de

sichere-schule.de

316 ms

sichere-schule.de

sichere-schule.de

611 ms

vendor.min.css

vendor.min.css

301 ms

global.min.css

global.min.css

387 ms

portal.min.css

portal.min.css

384 ms

df667545845608ceda194cc29f4a00fc-1695993476

df667545845608ceda194cc29f4a00fc-1695993476

313 ms

a6014b50cfb42beeb45172e7bdac25e0-1683974014

a6014b50cfb42beeb45172e7bdac25e0-1683974014

313 ms

dguv-logo.svg

dguv-logo.svg

380 ms

sish-startgrafik-2024-oc.jpg

sish-startgrafik-2024-oc.jpg

1163 ms

202-112_600x600.jpg

202-112_600x600.jpg

777 ms

schulhof-verkehrsuebung.jpg

schulhof-verkehrsuebung.jpg

1030 ms

rettungsablauf.jpg

rettungsablauf.jpg

1401 ms

pin_85.jpg

pin_85.jpg

1030 ms

schwimmhalle-newsbild02.jpg

schwimmhalle-newsbild02.jpg

1119 ms

konfigurator.png

konfigurator.png

1237 ms

biologie-cover-pdf.jpg

biologie-cover-pdf.jpg

1277 ms

sicheres-werken.png

sicheres-werken.png

1383 ms

news-pdf-broschure.jpg

news-pdf-broschure.jpg

1254 ms

chemie-home.jpg

chemie-home.jpg

1383 ms

sportfreiflaechen.jpg

sportfreiflaechen.jpg

1401 ms

schwimmhalle_becken.jpg

schwimmhalle_becken.jpg

1504 ms

erste-hilfe-raum.jpg

erste-hilfe-raum.jpg

1487 ms

physikraum02.jpg

physikraum02.jpg

1574 ms

unterricht-home.jpg

unterricht-home.jpg

1551 ms

naturnahe-erfahrung.jpg

naturnahe-erfahrung.jpg

1593 ms

nordrhein-westfalen__29.png

nordrhein-westfalen__29.png

465 ms

polyfill.js

polyfill.js

424 ms

vendor.min.js

vendor.min.js

819 ms

scripts.min.js

scripts.min.js

386 ms

configs.min.js

configs.min.js

385 ms

news-slider.min.js

news-slider.min.js

386 ms

framework-extras.js

framework-extras.js

409 ms

framework-extras.css

framework-extras.css

480 ms

9a2447da1a12822af145c218a16550ee-1695993476

9a2447da1a12822af145c218a16550ee-1695993476

519 ms

84641beb01405d221cd83d8c6d992838-1655902243

84641beb01405d221cd83d8c6d992838-1655902243

511 ms

aula.jpg

aula.jpg

1460 ms

barrierefrei.jpg

barrierefrei.jpg

1554 ms

ch-feuerloescher.jpg

ch-feuerloescher.jpg

724 ms

plus-w.png

plus-w.png

1306 ms

barrierefrei-w.png

barrierefrei-w.png

1267 ms

ballsporteinrichtungen.jpg

ballsporteinrichtungen.jpg

1288 ms

gelaendegestaltung.jpg

gelaendegestaltung.jpg

1306 ms

XXY4WT967R

XXY4WT967R

739 ms

36FQ86980J

36FQ86980J

647 ms

DJG3Y54G4J

DJG3Y54G4J

648 ms

E9241FG4EX

E9241FG4EX

740 ms

NKE6707T88

NKE6707T88

745 ms

Y4Q9S66YJV

Y4Q9S66YJV

744 ms

DGUVMetaWeb-Bold.woff

DGUVMetaWeb-Bold.woff

120 ms

fa-solid-900.woff

fa-solid-900.woff

230 ms

fa-regular-400.woff

fa-regular-400.woff

191 ms

matomo.js

matomo.js

658 ms

matomo.php

matomo.php

178 ms

Accessibility Review

sichere-schule.de accessibility score

88

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

sichere-schule.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

sichere-schule.de SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sichere-schule.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Sichere-schule.de main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

sichere-schule.de

Open Graph data is detected on the main page of Sichere Schule. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: