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

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

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

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.

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

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: