Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 0

    Best Practices

  • 93

    SEO

    Google-friendlier than
    83% of websites

wissenschaft-online.de

Spektrum.de - Nachrichten aus Wissenschaft und Forschung

Page Load Speed

3 sec in total

First Response

235 ms

Resources Loaded

1.6 sec

Page Rendered

1.1 sec

wissenschaft-online.de screenshot

About Website

Welcome to wissenschaft-online.de homepage info - get ready to check Wissenschaft Online best content for Germany right away, or after learning these important things about wissenschaft-online.de

Experten aus Wissenschaft und Forschung berichten über die aktuellen Erkenntnisse ihrer Fachgebiete - kompetent, authentisch und verständlich.

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Key Findings

We analyzed Wissenschaft-online.de page load time and found that the first response time was 235 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

wissenschaft-online.de performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value20.2 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value2,160 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value2.414

0/100

15%

TTI (Time to Interactive)

Value24.8 s

0/100

10%

Network Requests Diagram

wissenschaft-online.de

235 ms

www.spektrum.de

129 ms

jquery.min.js

144 ms

app.css

165 ms

loader.js

603 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 6% of them (1 request) were addressed to the original Wissenschaft-online.de, 44% (7 requests) were made to Static.spektrum.de and 13% (2 requests) were made to Spektrum.de. The less responsive or slowest element that took the longest time to load (603 ms) relates to the external source Data-285d0c5451.spektrum.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (65%)

Content Size

1.6 MB

After Optimization

564.0 kB

In fact, the total size of Wissenschaft-online.de main page is 1.6 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. 65% of websites need less resources to load. Javascripts take 725.5 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 112.7 kB

  • Original 141.2 kB
  • After minification 139.5 kB
  • After compression 28.5 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 112.7 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 187.5 kB
  • After minification 187.5 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. Wissenschaft Online images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 459.7 kB

  • Original 725.5 kB
  • After minification 725.5 kB
  • After compression 265.8 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 459.7 kB or 63% of the original size.

CSS Optimization

-86%

Potential reduce by 497.1 kB

  • Original 579.3 kB
  • After minification 579.1 kB
  • After compression 82.2 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. Wissenschaft-online.de needs all CSS files to be minified and compressed as it can save up to 497.1 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (64%)

Requests Now

11

After Optimization

4

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wissenschaft Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

wissenschaft-online.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

<frame> or <iframe> elements do not have a title

SEO Factors

wissenschaft-online.de SEO score

93

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

    DE

  • Encoding

    UTF-8

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