Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

iwkoeln.de

Home - Institut der deutschen Wirtschaft (IW)

Page Load Speed

3.7 sec in total

First Response

286 ms

Resources Loaded

2.3 sec

Page Rendered

1.1 sec

iwkoeln.de screenshot

About Website

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

Das IW ist ein privates Wirtschaftsforschungsinstitut, das sich mit Wirtschafts- und Sozialpolitik, dem Bildungssystem und dem Arbeitsmarkt beschäftigt.

Visit iwkoeln.de

Key Findings

We analyzed Iwkoeln.de page load time and found that the first response time was 286 ms and then it took 3.4 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

iwkoeln.de performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value770 ms

38/100

30%

CLS (Cumulative Layout Shift)

Value0.079

94/100

15%

TTI (Time to Interactive)

Value7.9 s

43/100

10%

Network Requests Diagram

iwkoeln.de

286 ms

www.iwkoeln.de

647 ms

default.css

204 ms

e.js

673 ms

default.js

434 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 89% of them (48 requests) were addressed to the original Iwkoeln.de, 4% (2 requests) were made to Code.etracker.com and 4% (2 requests) were made to Webtracking.iwmedien.de. The less responsive or slowest element that took the longest time to load (859 ms) relates to the external source Webtracking.iwmedien.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 159.1 kB (38%)

Content Size

414.4 kB

After Optimization

255.3 kB

In fact, the total size of Iwkoeln.de main page is 414.4 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. 50% of websites need less resources to load. HTML takes 196.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 158.8 kB

  • Original 196.8 kB
  • After minification 195.6 kB
  • After compression 38.0 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 158.8 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 13 B

  • Original 102.3 kB
  • After minification 102.3 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. IW Koeln images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 314 B

  • Original 115.3 kB
  • After minification 115.3 kB
  • After compression 115.0 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.

Requests Breakdown

Number of requests can be reduced by 38 (88%)

Requests Now

43

After Optimization

5

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IW Koeln. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

iwkoeln.de accessibility score

88

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

[aria-hidden="true"] elements contain focusable descendents

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

Buttons do not have an accessible name

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

iwkoeln.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

High

Page has valid source maps

SEO Factors

iwkoeln.de SEO score

100

Search Engine Optimization Advices

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

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Iwkoeln.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 Iwkoeln.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 IW Koeln. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: