Tools & Wizards About Us
hdt-essen.de screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

hdt-essen.de

Haus der Technik e. V. Fortbildungen für technische Berufe | HDT

Page Load Speed

3.7 sec in total

First Response

437 ms

Resources Loaded

3.1 sec

Page Rendered

89 ms

hdt-essen.de screenshot

About Website

Visit hdt-essen.de now to see the best up-to-date HDT Essen content for Germany and also check out these interesting facts you probably never knew about hdt-essen.de

Haus der Technik bietet Weiterbildungen in vielen technischen Bereichen in den Formaten Online, Hybrid, Präsenz.

Visit hdt-essen.de

Key Findings

We analyzed Hdt-essen.de page load time and found that the first response time was 437 ms and then it took 3.2 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

hdt-essen.de performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value780 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.017

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

hdt-essen.de

437 ms

www.hdt.de

721 ms

js

72 ms

gtm.js

370 ms

1711630954_82f02d9de2a3cc77986d2d0a8b8f537c.css

451 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Hdt-essen.de, 82% (36 requests) were made to Hdt.de and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Hdt.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 125.1 kB (8%)

Content Size

1.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hdt-essen.de main page is 1.6 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. 55% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 111.7 kB

  • Original 133.6 kB
  • After minification 133.5 kB
  • After compression 21.9 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 111.7 kB or 84% of the original size.

Image Optimization

-1%

Potential reduce by 12.8 kB

  • Original 1.1 MB
  • After minification 1.1 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. HDT Essen images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 139 B

  • Original 274.2 kB
  • After minification 274.2 kB
  • After compression 274.0 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 492 B

  • Original 126.2 kB
  • After minification 126.2 kB
  • After compression 125.7 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. Hdt-essen.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 7 (19%)

Requests Now

36

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HDT Essen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hdt-essen.de

hdt-essen.de

437 ms

www.hdt.de

www.hdt.de

721 ms

js

js

72 ms

gtm.js

gtm.js

370 ms

1711630954_82f02d9de2a3cc77986d2d0a8b8f537c.css

1711630954_82f02d9de2a3cc77986d2d0a8b8f537c.css

451 ms

jquery-ui.min.css

jquery-ui.min.css

548 ms

logo.png

logo.png

546 ms

1711630954_82f02d9de2a3cc77986d2d0a8b8f537c.js

1711630954_82f02d9de2a3cc77986d2d0a8b8f537c.js

1111 ms

X6349E28BFED2343575E1A28783337CC2.js

X6349E28BFED2343575E1A28783337CC2.js

16 ms

Themen-Highlight_Hochvoltsysteme_in_batterieelektrischen_Fahrzeugen_800x800.jpg

Themen-Highlight_Hochvoltsysteme_in_batterieelektrischen_Fahrzeugen_800x800.jpg

726 ms

Themen-Highlight_Interview_Conformity_of_Production_800x800.jpg

Themen-Highlight_Interview_Conformity_of_Production_800x800.jpg

730 ms

Themen-Highlight_Wasserstoffverbrennungsmotor_800x800.jpg

Themen-Highlight_Wasserstoffverbrennungsmotor_800x800.jpg

632 ms

Themen-Highlight_Herausforderungen_bei_LNG_und_H2_800x800.jpg

Themen-Highlight_Herausforderungen_bei_LNG_und_H2_800x800.jpg

725 ms

Themen-Highlight_Schaltberechtigung_VR-Brille_800x800.jpg

Themen-Highlight_Schaltberechtigung_VR-Brille_800x800.jpg

728 ms

Themen-Highlight_Interview_Rettungsroboter_800x800.jpg

Themen-Highlight_Interview_Rettungsroboter_800x800.jpg

821 ms

Themen-Highlight_Sommerakademie_2024_Slider_Startseite_800x800.jpg

Themen-Highlight_Sommerakademie_2024_Slider_Startseite_800x800.jpg

1007 ms

Themen-Highlight_Neue_EU-Maschinenverordnung_800x800.jpg

Themen-Highlight_Neue_EU-Maschinenverordnung_800x800.jpg

916 ms

Themen-Highlight_intelligente_Energie_Slider_Startseite_800x800.jpg

Themen-Highlight_intelligente_Energie_Slider_Startseite_800x800.jpg

916 ms

Themen-Highlight_Argumentieren_Slider_Startseite_800x800.jpg

Themen-Highlight_Argumentieren_Slider_Startseite_800x800.jpg

826 ms

hdtapp_Banner_HDT_Startseite_ab_mai_2022_800x800.jpg

hdtapp_Banner_HDT_Startseite_ab_mai_2022_800x800.jpg

916 ms

Themen-Highlight_Umweltschutz_Slider_Startseite_800x800.jpg

Themen-Highlight_Umweltschutz_Slider_Startseite_800x800.jpg

1017 ms

tagungen_Banner_HDT_Startseite_ab_mai_2022_800x800.jpg

tagungen_Banner_HDT_Startseite_ab_mai_2022_800x800.jpg

1011 ms

vertical-spacer1zhXLzbQNAIt3_800x800.png

vertical-spacer1zhXLzbQNAIt3_800x800.png

1010 ms

ueber_uns_hdt_journalSSG4UArFzzitj_800x800.jpg

ueber_uns_hdt_journalSSG4UArFzzitj_800x800.jpg

1105 ms

themencZ8pQpAs7VzH1_800x800.jpg

themencZ8pQpAs7VzH1_800x800.jpg

1101 ms

das_besondere_highlight_sommerakademie_800x800.jpg

das_besondere_highlight_sommerakademie_800x800.jpg

1199 ms

hdt-journal_Prozessmesstechnik_und_Prozessdatenanalyse_600x600.jpg

hdt-journal_Prozessmesstechnik_und_Prozessdatenanalyse_600x600.jpg

1293 ms

hdt-journal_programm_essener_wissenschaftssommer_2024_600x600.jpg

hdt-journal_programm_essener_wissenschaftssommer_2024_600x600.jpg

1208 ms

hdt-journal_Editorial_Mai_2024_600x600.jpg

hdt-journal_Editorial_Mai_2024_600x600.jpg

1388 ms

hdt-journal_Eurotunnel_Eroeffnung_Kalenderblatt_600x600.jpg

hdt-journal_Eurotunnel_Eroeffnung_Kalenderblatt_600x600.jpg

1416 ms

erklaervideosODgdrRvSdX4FM_800x800.jpg

erklaervideosODgdrRvSdX4FM_800x800.jpg

1203 ms

sommerakademie_hdtplusCQDdkMIx9jZZ0_800x800.jpg

sommerakademie_hdtplusCQDdkMIx9jZZ0_800x800.jpg

1416 ms

analytics.js

analytics.js

73 ms

fontawesome.min.css

fontawesome.min.css

857 ms

all.min.css

all.min.css

862 ms

collect

collect

12 ms

collect

collect

25 ms

ga-audiences

ga-audiences

27 ms

hind-light-webfont.woff

hind-light-webfont.woff

100 ms

hind-semibold-webfont.woff

hind-semibold-webfont.woff

100 ms

shopware.woff

shopware.woff

192 ms

fa-solid-900.ttf

fa-solid-900.ttf

578 ms

fa-regular-400.ttf

fa-regular-400.ttf

206 ms

fa-brands-400.ttf

fa-brands-400.ttf

490 ms

Accessibility Review

hdt-essen.de accessibility score

94

Accessibility Issues

ARIA

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.

Impact

Issue

High

button, link, and menuitem elements do not have accessible names.

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.

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

Links do not have a discernible name

Best Practices

hdt-essen.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

hdt-essen.de SEO score

91

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

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hdt-essen.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 Hdt-essen.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

hdt-essen.de

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