8.4 sec in total
330 ms
4.9 sec
3.1 sec
Click here to check amazing Nacht Der Wissenschaften content for Germany. Otherwise, check out these important facts you probably never knew about nacht-der-wissenschaften.de
Lange Nacht der Wissenschaften
Visit nacht-der-wissenschaften.deWe analyzed Nacht-der-wissenschaften.de page load time and found that the first response time was 330 ms and then it took 8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
nacht-der-wissenschaften.de performance score
name
value
score
weighting
Value8.3 s
0/100
10%
Value28.6 s
0/100
25%
Value12.4 s
3/100
10%
Value7,410 ms
0/100
30%
Value0.007
100/100
15%
Value26.1 s
0/100
10%
330 ms
957 ms
286 ms
282 ms
289 ms
Our browser made a total of 154 requests to load all elements on the main page. We found that all of those requests were addressed to Nacht-der-wissenschaften.de and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Nacht-der-wissenschaften.de.
Page size can be reduced by 1.0 MB (13%)
7.5 MB
6.5 MB
In fact, the total size of Nacht-der-wissenschaften.de main page is 7.5 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. Only a small number of websites need less resources to load. Images take 6.1 MB which makes up the majority of the site volume.
Potential reduce by 398.3 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. 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 398.3 kB or 83% of the original size.
Potential reduce by 280.9 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. Nacht Der Wissenschaften images are well optimized though.
Potential reduce by 312.6 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 312.6 kB or 34% of the original size.
Potential reduce by 15.7 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. Nacht-der-wissenschaften.de needs all CSS files to be minified and compressed as it can save up to 15.7 kB or 25% of the original size.
Number of requests can be reduced by 78 (64%)
122
44
The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nacht Der Wissenschaften. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 56 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.
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nacht-der-wissenschaften.de accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
nacht-der-wissenschaften.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
nacht-der-wissenschaften.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Document uses legible font sizes
Tap targets are not sized appropriately
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nacht-der-wissenschaften.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 Nacht-der-wissenschaften.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.
nacht-der-wissenschaften.de
Open Graph description is not detected on the main page of Nacht Der Wissenschaften. 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: