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We analyzed Kopp-verlag.de page load time and found that the first response time was 825 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
kopp-verlag.de performance score
Our browser made a total of 115 requests to load all elements on the main page. We found that 40% of them (46 requests) were addressed to the original Kopp-verlag.de, 57% (65 requests) were made to Kopp-medien.websale.net and 3% (3 requests) were made to Kopp.prudsys-rde.de. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Kopp-medien.websale.net.
Page size can be reduced by 970.9 kB (12%)
In fact, the total size of Kopp-verlag.de main page is 7.9 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. 75% 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 7.4 MB which makes up the majority of the site volume.
Potential reduce by 116.3 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. This page needs HTML code to be minified as it can gain 21.5 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 116.3 kB or 88% of the original size.
Potential reduce by 602.3 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. Kopp Verlag images are well optimized though.
Potential reduce by 167.7 kB
Potential reduce by 84.6 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. Kopp-verlag.de needs all CSS files to be minified and compressed as it can save up to 84.6 kB or 85% of the original size.
Number of requests can be reduced by 21 (18%)
kopp-verlag.de accessibility score
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.
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
These items highlight common accessibility best practices.
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
kopp-verlag.de best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Serves images with low resolution
kopp-verlag.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
robots.txt is not valid
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have [alt] attributes
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/).
Document uses legible font sizes
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kopp-verlag.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Kopp-verlag.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.
Open Graph description is not detected on the main page of Kopp Verlag. 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: