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14

Performance

Renders faster than
26% of other websites
87

Accessibility

Visual factors better than
that of 66% of websites
58

Best Practices

More advanced features
available than in
20% of websites
62

SEO

Google-friendlier than
23% of websites

First Response

728 ms

Resources Loaded

5.6 sec

Page Rendered

839 ms

dierk-raabe.com screenshot

About Website

Welcome to dierk-raabe.com homepage info - get ready to check Dierk Raabe best content for India right away, or after learning these important things about dierk-raabe.com

Dierk Raabe, Sustainable metals, Sustainable Metallurgy, hydrogen embrittlement, high entropy alloys, steel, Computational Materials Science, Crystal Plasticity, EBSD, phase transformation, DP steel, ...

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Key Findings

We analyzed Dierk-raabe.com page load time and found that the first response time was 728 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value22.2 s

0/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value2,700 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.148

76/100

15%

TTI (Time to Interactive)

Value23.7 s

1/100

10%

www.dierk-raabe.com

728 ms

layout.css

199 ms

main.css

323 ms

font.css

321 ms

web.css

439 ms

Our browser made a total of 192 requests to load all elements on the main page. We found that 53% of them (101 requests) were addressed to the original Dierk-raabe.com, 10% (19 requests) were made to Badges.altmetric.com and 9% (18 requests) were made to Api.altmetric.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Dierk-raabe.com.

Content Size

7.6 MB

After Optimization

7.2 MB

In fact, the total size of Dierk-raabe.com main page is 7.6 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. 70% of websites need less resources to load. Images take 6.8 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 224.8 kB

Original 264.0 kB
After minification 249.9 kB
After compression 39.2 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 224.8 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 87.1 kB

Original 6.8 MB
After minification 6.7 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. Dierk Raabe images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 22.7 kB

Original 426.9 kB
After minification 426.9 kB
After compression 404.2 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

-6%

Potential reduce by 4.1 kB

Original 74.8 kB
After minification 74.8 kB
After compression 70.6 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. Dierk-raabe.com has all CSS files already compressed.

Requests Now

188

After Optimization

96

The browser has sent 188 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dierk Raabe. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

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.

High

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

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

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 Dierk-raabe.com 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 Dierk-raabe.com 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

dierk-raabe.com

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