Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

spektrum.de

Spektrum.de - Nachrichten aus Wissenschaft und Forschung

Page Load Speed

9.1 sec in total

First Response

404 ms

Resources Loaded

7.2 sec

Page Rendered

1.5 sec

spektrum.de screenshot

About Website

Click here to check amazing Spektrum content for Germany. Otherwise, check out these important facts you probably never knew about spektrum.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 Spektrum.de page load time and found that the first response time was 404 ms and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

spektrum.de performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value17.0 s

0/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value5,700 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.092

92/100

15%

TTI (Time to Interactive)

Value17.7 s

4/100

10%

Network Requests Diagram

spektrum.de

404 ms

www.spektrum.de

1103 ms

css

70 ms

css

140 ms

jquery.fancybox.css

275 ms

Our browser made a total of 203 requests to load all elements on the main page. We found that 57% of them (115 requests) were addressed to the original Spektrum.de, 5% (11 requests) were made to Fonts.gstatic.com and 3% (6 requests) were made to Dmp.theadex.com. The less responsive or slowest element that took the longest time to load (4.1 sec) belongs to the original domain Spektrum.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (32%)

Content Size

3.9 MB

After Optimization

2.6 MB

In fact, the total size of Spektrum.de main page is 3.9 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. 80% 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 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 223.1 kB

  • Original 304.6 kB
  • After minification 291.3 kB
  • After compression 81.5 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 223.1 kB or 73% of the original size.

Image Optimization

-1%

Potential reduce by 27.0 kB

  • Original 2.2 MB
  • After minification 2.1 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. Spektrum images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 900.0 kB

  • Original 1.3 MB
  • After minification 1.2 MB
  • After compression 364.9 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 900.0 kB or 71% of the original size.

CSS Optimization

-81%

Potential reduce by 101.8 kB

  • Original 125.2 kB
  • After minification 111.5 kB
  • After compression 23.4 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. Spektrum.de needs all CSS files to be minified and compressed as it can save up to 101.8 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 74 (40%)

Requests Now

183

After Optimization

109

The browser has sent 183 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Spektrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 46 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

spektrum.de accessibility score

98

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.

Best Practices

spektrum.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

spektrum.de SEO score

91

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Spektrum.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 Spektrum.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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