Tools & Wizards About Us
hzg.de screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

hzg.de

Helmholtz-Zentrum Hereon - Spitzenforschung für eine Welt im Wandel

Page Load Speed

7 sec in total

First Response

392 ms

Resources Loaded

5.5 sec

Page Rendered

1.1 sec

hzg.de screenshot

About Website

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

Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht

Visit hzg.de

Key Findings

We analyzed Hzg.de page load time and found that the first response time was 392 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

hzg.de performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value15.6 s

0/100

10%

TBT (Total Blocking Time)

Value10,910 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.052

99/100

15%

TTI (Time to Interactive)

Value15.3 s

7/100

10%

Network Requests Diagram

hzg.de

392 ms

hzg.de

548 ms

main2015.css

204 ms

main.css

306 ms

modernizr.respond.js

414 ms

Our browser made a total of 99 requests to load all elements on the main page. We found that all of those requests were addressed to Hzg.de and no external sources were called. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Hzg.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 872.5 kB (8%)

Content Size

10.4 MB

After Optimization

9.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hzg.de main page is 10.4 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. 70% of websites need less resources to load. Images take 9.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 50.0 kB

  • Original 61.1 kB
  • After minification 46.1 kB
  • After compression 11.1 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 15.0 kB, which is 24% 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 50.0 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 114.7 kB

  • Original 9.5 MB
  • After minification 9.4 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. Hzg images are well optimized though.

JavaScript Optimization

-81%

Potential reduce by 488.6 kB

  • Original 605.1 kB
  • After minification 384.5 kB
  • After compression 116.5 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 488.6 kB or 81% of the original size.

CSS Optimization

-85%

Potential reduce by 219.2 kB

  • Original 259.0 kB
  • After minification 192.8 kB
  • After compression 39.9 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. Hzg.de needs all CSS files to be minified and compressed as it can save up to 219.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (40%)

Requests Now

97

After Optimization

58

  • Images
  • JavaScript
  • CSS

The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hzg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hzg.de

hzg.de

392 ms

hzg.de

hzg.de

548 ms

main2015.css

main2015.css

204 ms

main.css

main.css

306 ms

modernizr.respond.js

modernizr.respond.js

414 ms

video.js

video.js

616 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

429 ms

log.js

log.js

220 ms

browser.selector.js

browser.selector.js

308 ms

jquery.placeholder-1.0.js

jquery.placeholder-1.0.js

309 ms

jquery.autolink-1.0.js

jquery.autolink-1.0.js

325 ms

jquery-ui-1.10.3.custom.js

jquery-ui-1.10.3.custom.js

713 ms

jquery.ui.datepicker-de.js

jquery.ui.datepicker-de.js

410 ms

jquery.hashchange.min.js

jquery.hashchange.min.js

415 ms

jquery.easytabs-1.1.js

jquery.easytabs-1.1.js

534 ms

jquery.easytoggle-1.3.js

jquery.easytoggle-1.3.js

513 ms

jquery.edelgallery-1.0.2.js

jquery.edelgallery-1.0.2.js

518 ms

jquery.matchheight-1.4.js

jquery.matchheight-1.4.js

532 ms

jquery.responsivemove-1.3.js

jquery.responsivemove-1.3.js

615 ms

slides.jquery.ew72.js

slides.jquery.ew72.js

617 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

619 ms

scripts.js

scripts.js

639 ms

documentready.js

documentready.js

742 ms

imperia.js

imperia.js

717 ms

main.js

main.js

719 ms

normalize.css

normalize.css

624 ms

grid.css

grid.css

2668 ms

globals.css

globals.css

715 ms

modules.css

modules.css

725 ms

navi.css

navi.css

723 ms

form.css

form.css

728 ms

mediathek.css

mediathek.css

749 ms

video-js.css

video-js.css

817 ms

jquery-ui-1.8.16.custom.css

jquery-ui-1.8.16.custom.css

826 ms

jquery.edelgallery.css

jquery.edelgallery.css

827 ms

colorbox.css

colorbox.css

828 ms

slides.css

slides.css

854 ms

mediaqueries.css

mediaqueries.css

919 ms

general.css

general.css

928 ms

imperia_fixes.css

imperia_fixes.css

828 ms

imperia_custom.css

imperia_custom.css

815 ms

bg_desktop_wasserstoff-leuchtturm.jpg

bg_desktop_wasserstoff-leuchtturm.jpg

418 ms

sprite_icons.gif

sprite_icons.gif

223 ms

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logo_hzg_cms10.gif

222 ms

stage_wissenschaftnutzen.png

stage_wissenschaftnutzen.png

222 ms

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515 ms

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515 ms

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fittosize__645_0_81f5d0683e23e9b1b7fb86d63440aa64_image_corbis_navi.jpg

633 ms

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kopfbild_forschung_diffraktometer.jpg

538 ms

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432 ms

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fittosize__645_0_e6afa7c1a6107b5f7794b1cefe75b31e_eu_projekte_banner.jpg

625 ms

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751 ms

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717 ms

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615 ms

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742 ms

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724 ms

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724 ms

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733 ms

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816 ms

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fittosize__645_0_1ebb855028f0d92e9873848be6fd5b58_schuelerlabor.jpg

834 ms

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834 ms

presse_newsroom_16zu9_ok.jpg

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839 ms

fittosize__645_0_405107b77d7ce6d41c962bf44c4d29af_kalender.jpg

fittosize__645_0_405107b77d7ce6d41c962bf44c4d29af_kalender.jpg

851 ms

fittosize__645_0_cd82441431e20b59b2ab084b593ec19b_presse-16_zu9.jpg

fittosize__645_0_cd82441431e20b59b2ab084b593ec19b_presse-16_zu9.jpg

849 ms

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923 ms

luftbild_2016_forschungsreaktoranlage_ehem_gkss_layer_small.jpg

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945 ms

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fittosize__645_0_659a29f66cef1683be076a4e49a1e197_magazin_stapel__d.jpg

944 ms

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eilmeldung.svg

943 ms

fittosize_1140_427_56b38dfcad3cbba7348c463d41613ee2_helmholtz-klima-initiative_teaser.jpg

fittosize_1140_427_56b38dfcad3cbba7348c463d41613ee2_helmholtz-klima-initiative_teaser.jpg

960 ms

fittosize_1140_427_07ab9a7eaa56ca5a01ed08c98a3d6048_2020-07_nyalesund_10_awi_grit-steinhoefel_teaser-2.jpg

fittosize_1140_427_07ab9a7eaa56ca5a01ed08c98a3d6048_2020-07_nyalesund_10_awi_grit-steinhoefel_teaser-2.jpg

964 ms

fittosize_1140_427_42c2b137538a9c16653c7f63bf52907b_hzg5286.jpg

fittosize_1140_427_42c2b137538a9c16653c7f63bf52907b_hzg5286.jpg

1031 ms

beamline_banner_hzg_home.jpg

beamline_banner_hzg_home.jpg

1055 ms

fittosize_700_0_981930e6514559ee45161717e9278474_logo_audit_beruf-und-familie.jpg

fittosize_700_0_981930e6514559ee45161717e9278474_logo_audit_beruf-und-familie.jpg

1045 ms

fittosize_700_0_4801d503d28e1f47bc9c9b8913e92880_wasserstoff_symbol_hzg_blau.jpg

fittosize_700_0_4801d503d28e1f47bc9c9b8913e92880_wasserstoff_symbol_hzg_blau.jpg

1048 ms

fittosize__210_0_12323aab65f4fa148cf745d77ea93f69_zugeschnitten_in2science_5-otzipka-hzg_klassen_thomas_0070.jpg

fittosize__210_0_12323aab65f4fa148cf745d77ea93f69_zugeschnitten_in2science_5-otzipka-hzg_klassen_thomas_0070.jpg

1067 ms

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fittosize__700_0_910f21ded4f2f787ef6ea4b8e24a37cf_coronavirus_setcard.jpg

1072 ms

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1090 ms

teaser_klimawissen_setcard.jpg

teaser_klimawissen_setcard.jpg

953 ms

thema_des_monats_blick_ins_detail.jpg

thema_des_monats_blick_ins_detail.jpg

1055 ms

schuelerlabor_quantensprung_setcard.jpg

schuelerlabor_quantensprung_setcard.jpg

953 ms

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773 ms

publikationen_setcard.jpg

publikationen_setcard.jpg

767 ms

alumni_logo_setcard.jpg

alumni_logo_setcard.jpg

738 ms

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fittosize__210_0_bc843a2a22ff4150d5a7cc7a50414d17_michael_buchsteiner.jpg

763 ms

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luftbild_2016_forschungsreaktoranlage_ehem_gkss_layer.jpg

754 ms

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fittosize_0_70_149035731ec156eebcf309064d5091f1_standbild_metallhydride_film_de.jpg

670 ms

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682 ms

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724 ms

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660 ms

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fittosize__0_70_4f5eef0d7ae5d2db85872586fd68870c__csx7930.jpg

647 ms

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660 ms

fittosize__0_70_7bcea316e140f600340a99824b1ff925_vorschaubild_film_hzg-h2.jpg

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657 ms

fittosize__0_61_36bcc85cbf585fcf2cf8f2ce66a946a1_2017_hgf_logo.jpg

fittosize__0_61_36bcc85cbf585fcf2cf8f2ce66a946a1_2017_hgf_logo.jpg

662 ms

logo_gerics_home.jpg

logo_gerics_home.jpg

708 ms

audit_logo_home.png

audit_logo_home.png

654 ms

logo_eu.jpg

logo_eu.jpg

639 ms

sprite_gallery_icons.png

sprite_gallery_icons.png

652 ms

print.css

print.css

104 ms

print.css

print.css

103 ms

Accessibility Review

hzg.de accessibility score

94

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

Best Practices

hzg.de best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

hzg.de SEO score

92

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

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hzg.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it does not match the claimed English language. Our system also found out that Hzg.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

hzg.de

Open Graph description is not detected on the main page of Hzg. 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: