Tools & Wizards About Us

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

preevent.de

preevent - Anlagen- und Betriebssicherheit - STARTSEITE

Page Load Speed

5 sec in total

First Response

624 ms

Resources Loaded

4.1 sec

Page Rendered

228 ms

About Website

Click here to check amazing Preevent content. Otherwise, check out these important facts you probably never knew about preevent.de

Sicherheit an erster Stelle

Visit preevent.de

Key Findings

We analyzed Preevent.de page load time and found that the first response time was 624 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

preevent.de performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.213

58/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

Network Requests Diagram

preevent.de

624 ms

beng-proxy.js

546 ms

font-awesome.min.css

651 ms

widget-runtime.css

558 ms

deploy.css

559 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 38% of them (13 requests) were addressed to the original Preevent.de, 59% (20 requests) were made to Strato-editor.com and 3% (1 request) were made to Fonts.cm4all.net. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Preevent.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 478.7 kB (46%)

Content Size

1.0 MB

After Optimization

570.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Preevent.de main page is 1.0 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. 25% of websites need less resources to load. Images take 526.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 38.1 kB

  • Original 46.0 kB
  • After minification 45.5 kB
  • After compression 8.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 38.1 kB or 83% of the original size.

Image Optimization

-22%

Potential reduce by 114.2 kB

  • Original 526.3 kB
  • After minification 412.1 kB

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. Obviously, Preevent needs image optimization as it can save up to 114.2 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 281.5 kB

  • Original 417.2 kB
  • After minification 416.4 kB
  • After compression 135.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 281.5 kB or 67% of the original size.

CSS Optimization

-75%

Potential reduce by 45.0 kB

  • Original 59.6 kB
  • After minification 59.0 kB
  • After compression 14.7 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. Preevent.de needs all CSS files to be minified and compressed as it can save up to 45.0 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (75%)

Requests Now

24

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preevent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

preevent.de accessibility score

62

Accessibility Issues

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

Buttons do not have an accessible name

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

preevent.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

Page has valid source maps

SEO Factors

preevent.de SEO score

88

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Preevent.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Preevent.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

Open Graph description is not detected on the main page of Preevent. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: