7.3 sec in total
259 ms
6.8 sec
255 ms
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Visit rdt-global.deWe analyzed Rdt-global.de page load time and found that the first response time was 259 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
rdt-global.de performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value7.6 s
3/100
25%
Value6.5 s
39/100
10%
Value120 ms
97/100
30%
Value0.089
92/100
15%
Value7.0 s
53/100
10%
259 ms
3084 ms
866 ms
85 ms
99 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Rdt-global.de, 78% (36 requests) were made to Rdt.de and 7% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Rdt.de.
Page size can be reduced by 754.7 kB (75%)
1.0 MB
246.5 kB
In fact, the total size of Rdt-global.de main page is 1.0 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. 35% of websites need less resources to load. Images take 653.5 kB which makes up the majority of the site volume.
Potential reduce by 34.1 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 7.2 kB, which is 17% 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 34.1 kB or 83% of the original size.
Potential reduce by 504.4 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. Obviously, Rdt Global needs image optimization as it can save up to 504.4 kB or 77% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 71.5 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 71.5 kB or 57% of the original size.
Potential reduce by 144.7 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. Rdt-global.de needs all CSS files to be minified and compressed as it can save up to 144.7 kB or 80% of the original size.
Number of requests can be reduced by 20 (48%)
42
22
The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rdt Global. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
rdt-global.de
259 ms
rdt.de
3084 ms
bootstrap.less.min.css
866 ms
css
85 ms
css
99 ms
jquery.min.js
58 ms
rdt-functions.js
1011 ms
jquery.form-validator.min.js
36 ms
css
111 ms
genericons.css
1657 ms
style.css
763 ms
jquery.min.js
53 ms
bootstrap.min.js
61 ms
skip-link-focus-fix.js
149 ms
functions.js
131 ms
wp-embed.min.js
154 ms
wp-emoji-release.min.js
745 ms
top.png
290 ms
mail.png
288 ms
Kontaktpfeil2.png
288 ms
Kontaktpfeil.png
285 ms
tel1.png
287 ms
kontakt1.png
388 ms
rdt_logo2.png
893 ms
winschool53_22.png
1120 ms
xschool53_22.png
847 ms
inis53_22.png
627 ms
hdguard53_22.png
527 ms
xmood53_22.png
984 ms
rdturban53_22.png
651 ms
schulverwaltung.png
790 ms
webbasiert_white.png
766 ms
it_im_unterricht.png
876 ms
schultraeger_white.png
945 ms
pc-sicherheit_white.png
997 ms
byod.png
988 ms
virtualisierung_white.png
1042 ms
Lupe.png
1104 ms
home_head1.jpg
1281 ms
rdturban53.png
1142 ms
hdguard53.png
1570 ms
inis53.png
2640 ms
stickman.png
1293 ms
rdt_signatur.png
1433 ms
zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf
215 ms
Hgo13k-tfSpn0qi1SFdUfaCWcynf_cDxXwCLxiixG1c.ttf
218 ms
rdt-global.de accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[role] values are not valid
ARIA IDs are not unique
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
No form fields have multiple labels
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
rdt-global.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
rdt-global.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
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
EN
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rdt-global.de 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 Rdt-global.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.
rdt-global.de
Open Graph description is not detected on the main page of Rdt Global. 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: