Report Summary

  • 82

    Performance

    Renders faster than
    88% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    69% of websites

isoe.de

Institut für sozial-ökologische Forschung: ISOE

Page Load Speed

2.5 sec in total

First Response

357 ms

Resources Loaded

1.9 sec

Page Rendered

206 ms

isoe.de screenshot

About Website

Click here to check amazing ISOE content for Germany. Otherwise, check out these important facts you probably never knew about isoe.de

Das ISOE in Frankfurt am Main entwickelt Konzepte für eine nachhaltige Entwicklung. Es forscht unabhängig und transdisziplinär für Gesellschaft, Politik und Wirtschaft.

Visit isoe.de

Key Findings

We analyzed Isoe.de page load time and found that the first response time was 357 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

isoe.de performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

67/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.064

97/100

15%

TTI (Time to Interactive)

Value3.7 s

91/100

10%

Network Requests Diagram

isoe.de

357 ms

www.isoe.de

660 ms

stylesheet_aab44ae4a9.css

192 ms

stylesheet.css

194 ms

jquery.fancybox-1.3.4.css

195 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 89% of them (33 requests) were addressed to the original Isoe.de, 5% (2 requests) were made to Platform.twitter.com and 3% (1 request) were made to Syndication.twitter.com. The less responsive or slowest element that took the longest time to load (660 ms) belongs to the original domain Isoe.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 286.9 kB (62%)

Content Size

466.1 kB

After Optimization

179.2 kB

In fact, the total size of Isoe.de main page is 466.1 kB. 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. Javascripts take 239.7 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 19.7 kB

  • Original 25.4 kB
  • After minification 24.1 kB
  • After compression 5.7 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 19.7 kB or 77% of the original size.

Image Optimization

-20%

Potential reduce by 19.0 kB

  • Original 92.9 kB
  • After minification 73.9 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, ISOE needs image optimization as it can save up to 19.0 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-66%

Potential reduce by 157.2 kB

  • Original 239.7 kB
  • After minification 235.6 kB
  • After compression 82.5 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 157.2 kB or 66% of the original size.

CSS Optimization

-84%

Potential reduce by 91.0 kB

  • Original 108.1 kB
  • After minification 79.3 kB
  • After compression 17.0 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. Isoe.de needs all CSS files to be minified and compressed as it can save up to 91.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (40%)

Requests Now

35

After Optimization

21

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ISOE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

isoe.de accessibility score

95

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

isoe.de best practices score

75

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

isoe.de SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Isoe.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 Isoe.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 ISOE. 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: