Tools & Wizards About Us
en.nabu.de screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

en.nabu.de

NABU - Nature conservation worldwide

Page Load Speed

4.3 sec in total

First Response

295 ms

Resources Loaded

3 sec

Page Rendered

945 ms

en.nabu.de screenshot

About Website

Click here to check amazing En NABU content for Germany. Otherwise, check out these important facts you probably never knew about en.nabu.de

NABU is Germany's oldest and largest environmental association, working worldwide for intact ecosystems, a stable climate and a high level of biodiversity.

Visit en.nabu.de

Key Findings

We analyzed En.nabu.de page load time and found that the first response time was 295 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

en.nabu.de performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

79/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.475

18/100

15%

TTI (Time to Interactive)

Value59.9 s

0/100

10%

Network Requests Diagram

en.nabu.de

295 ms

en.nabu.de

688 ms

style.css

322 ms

ReadSpeaker.js

316 ms

config_en.js

313 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 94% of them (63 requests) were addressed to the original En.nabu.de, 4% (3 requests) were made to Stats.nabu.de and 1% (1 request) were made to Nabu.de. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Nabu.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (7%)

Content Size

21.9 MB

After Optimization

20.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of En.nabu.de main page is 21.9 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 21.6 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 63.7 kB

  • Original 78.0 kB
  • After minification 63.6 kB
  • After compression 14.3 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 14.5 kB, which is 19% 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 63.7 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 1.5 MB

  • Original 21.6 MB
  • After minification 20.1 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. En NABU images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 1.3 kB

  • Original 245.6 kB
  • After minification 245.6 kB
  • After compression 244.3 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

-1%

Potential reduce by 768 B

  • Original 69.3 kB
  • After minification 69.3 kB
  • After compression 68.5 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. En.nabu.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (30%)

Requests Now

61

After Optimization

43

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of En NABU. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

en.nabu.de

en.nabu.de

295 ms

en.nabu.de

en.nabu.de

688 ms

style.css

style.css

322 ms

ReadSpeaker.js

ReadSpeaker.js

316 ms

config_en.js

config_en.js

313 ms

klaro-no-css.js

klaro-no-css.js

533 ms

klaro.min.css

klaro.min.css

318 ms

logo.js

logo.js

313 ms

main.min.js

main.min.js

569 ms

ReadSpeaker.Styles.css

ReadSpeaker.Styles.css

111 ms

ReadSpeaker.Core.js

ReadSpeaker.Core.js

113 ms

ReadSpeaker.pub.Config.js

ReadSpeaker.pub.Config.js

236 ms

RsNabuStyles.css

RsNabuStyles.css

104 ms

thumb.php

thumb.php

1539 ms

logo.jpg

logo.jpg

112 ms

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170215-nabu-farne-bruno-d-amicis-680x453.jpeg

505 ms

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2020-11-30-sdg-logo-without-un-emblem_c_un_680x453px.jpeg

207 ms

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22-11-10-nabu-afrievolve-tansania-hands-_c_nature_tanzania_680x453px.jpeg

497 ms

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406 ms

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210311_nabu-africa-slider-1-bruno-d_amicis-680x453.jpeg

278 ms

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210318-nabu-asia-4-indonesia-lara-shirin-bienkowski-680x453.jpeg

310 ms

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210603_poland-slowinski-aerial-life-peat-restore-volker-gehrmann-680x453px.jpeg

406 ms

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20140929-nabu-weizenfelder-buchen.jpeg

389 ms

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413 ms

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494 ms

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fittosize_3840_1097_6959fb98db89df7da20e143453d98041_240814-nabu-peatland-webinar-header-volker_gehrmann_3840x1097.jpg.jpeg

713 ms

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240724-nabu-photo-competition-canva-desktop-3840x1097.jpeg

806 ms

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240729-nabu-schneeleopard-slowmotiongli-stock.adobe.com-3840x1097.jpeg

717 ms

fittosize_1534_1390_a5f2fe9c0281da3d27619a7285c87104_240814-nabu-peatland-webinar-header-volker_gehrmann_3840x1097.jpg.jpeg

fittosize_1534_1390_a5f2fe9c0281da3d27619a7285c87104_240814-nabu-peatland-webinar-header-volker_gehrmann_3840x1097.jpg.jpeg

810 ms

240724-nabu-photo-competition-canva-mobile-1534x1390.jpeg

240724-nabu-photo-competition-canva-mobile-1534x1390.jpeg

804 ms

240729-nabu-schneeleopard-slowmotiongli-stock.adobe.com-1534x1390.jpeg

240729-nabu-schneeleopard-slowmotiongli-stock.adobe.com-1534x1390.jpeg

808 ms

fittosize_600_600_82d1916ef34d047f7c32a441264f045d_adobestock_76453579_240x240.jpeg

fittosize_600_600_82d1916ef34d047f7c32a441264f045d_adobestock_76453579_240x240.jpeg

815 ms

fittosize_600_600_6e5ca6c41faf81d75cc6f07716a39b9f_22-04-01-z-20210608_059_peatlands_poland_cottongrass_c_tomasz_wilk.jpeg

fittosize_600_600_6e5ca6c41faf81d75cc6f07716a39b9f_22-04-01-z-20210608_059_peatlands_poland_cottongrass_c_tomasz_wilk.jpeg

822 ms

240705-nabu-matthias-putze-kaffeekirschen-600x600.jpeg

240705-nabu-matthias-putze-kaffeekirschen-600x600.jpeg

896 ms

fittosize_600_600_aee9c3d632961ac1738b9a1935b505f8_160201-nabu-schneeleopard-andy-fabian680x453.jpeg

fittosize_600_600_aee9c3d632961ac1738b9a1935b505f8_160201-nabu-schneeleopard-andy-fabian680x453.jpeg

901 ms

fittosize_600_600_ac0fa539508bcb08ee5711cfedfd6760_230523_mangroven_damedias_adobestock_680x453.png

fittosize_600_600_ac0fa539508bcb08ee5711cfedfd6760_230523_mangroven_damedias_adobestock_680x453.png

1008 ms

fittosize_600_600_f53c739fdd88117af00dd353500df220_230419-nabu-armenian-folk-group-shutterstock-mountainpix.jpeg

fittosize_600_600_f53c739fdd88117af00dd353500df220_230419-nabu-armenian-folk-group-shutterstock-mountainpix.jpeg

912 ms

fittosize_600_600_88cc8b13055ffeb169e06b89514acfce_22-11-10-nabu-afrievolve-tansania-hands-_c_nature_tanzania_680x453px.jpeg

fittosize_600_600_88cc8b13055ffeb169e06b89514acfce_22-11-10-nabu-afrievolve-tansania-hands-_c_nature_tanzania_680x453px.jpeg

924 ms

fittosize_600_600_39d299ff2b80b884cd886077cfac36a6_2022-11-17-latvia-sudas_zviedru_purvs_peatland_c_mara_pakalne_680x453px.jpeg

fittosize_600_600_39d299ff2b80b884cd886077cfac36a6_2022-11-17-latvia-sudas_zviedru_purvs_peatland_c_mara_pakalne_680x453px.jpeg

926 ms

fittosize_600_600_2c8b319df217166df10891525a2498b2_23-01-23-junge-kropfgazelle-kirgisistan-foto-nabu-ivan-turkovskii-680x453.png

fittosize_600_600_2c8b319df217166df10891525a2498b2_23-01-23-junge-kropfgazelle-kirgisistan-foto-nabu-ivan-turkovskii-680x453.png

1100 ms

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fittosize_600_600_0fd1bc0a92b9fe7afa926c2f9fdda81f_23-08-27-nabu-storch-mulldeponie-lusine-aghajanyan.jpeg

1005 ms

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240722-nabu-havel-klemens-karkow_1880x1058.jpeg

1016 ms

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1031 ms

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1029 ms

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1305 ms

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240209_cms_cop_streifeng__nsen_adobe.stock_1880x1058.jpeg

1109 ms

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240222-nabu-nar-tal-nepal-stanciuc-adobe.stock-1880x1058.jpeg

1122 ms

matomo.js

matomo.js

686 ms

container_yHwWih9i.js

container_yHwWih9i.js

775 ms

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1122 ms

ReadSpeaker.lib.RSLib.js

ReadSpeaker.lib.RSLib.js

1100 ms

fa-regular-400.ttf

fa-regular-400.ttf

1102 ms

fa-light-300.ttf

fa-light-300.ttf

1124 ms

fa-solid-900.ttf

fa-solid-900.ttf

1029 ms

fa-brands-400.ttf

fa-brands-400.ttf

965 ms

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20231212-nabu-saiga-p-romanov-1880x1058.jpeg

933 ms

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20-10-28-focus-regions-world_c_vegefox-com-adobestock-3840x820px.jpeg

923 ms

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23-11-21-nabu-international-strategy-thumbnail-258x258.jpeg

922 ms

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231121-weltkarte-footer-test3.jpeg

926 ms

Union_Jack.png

Union_Jack.png

927 ms

matomo.php

matomo.php

107 ms

ReadSpeaker.Common.Settings.js

ReadSpeaker.Common.Settings.js

202 ms

ReadSpeaker.PlayerAPI.js

ReadSpeaker.PlayerAPI.js

268 ms

ReadSpeaker.HL.js

ReadSpeaker.HL.js

278 ms

ReadSpeaker.ui.js

ReadSpeaker.ui.js

282 ms

ReadSpeaker.enlargeHL.js

ReadSpeaker.enlargeHL.js

130 ms

ReadSpeaker.enlargeHL.css

ReadSpeaker.enlargeHL.css

107 ms

Accessibility Review

en.nabu.de accessibility score

96

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.

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

en.nabu.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

en.nabu.de SEO score

90

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

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

    EN

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

en.nabu.de

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