2.2 sec in total
385 ms
1.7 sec
156 ms
Welcome to duf-online.de homepage info - get ready to check Duf Online best content right away, or after learning these important things about duf-online.de
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Visit duf-online.deWe analyzed Duf-online.de page load time and found that the first response time was 385 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
duf-online.de performance score
name
value
score
weighting
Value3.3 s
40/100
10%
Value7.9 s
3/100
25%
Value6.8 s
35/100
10%
Value2,890 ms
3/100
30%
Value0.07
96/100
15%
Value13.8 s
10/100
10%
385 ms
185 ms
186 ms
385 ms
197 ms
Our browser made a total of 30 requests to load all elements on the main page. We found that 90% of them (27 requests) were addressed to the original Duf-online.de, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Msp.duf-online.de. The less responsive or slowest element that took the longest time to load (563 ms) belongs to the original domain Duf-online.de.
Page size can be reduced by 70.8 kB (36%)
195.7 kB
124.9 kB
In fact, the total size of Duf-online.de main page is 195.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Javascripts take 93.9 kB which makes up the majority of the site volume.
Potential reduce by 4.8 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 1.2 kB, which is 18% 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 4.8 kB or 71% of the original size.
Potential reduce by 178 B
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. Duf Online images are well optimized though.
Potential reduce by 54.1 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 54.1 kB or 58% of the original size.
Potential reduce by 11.7 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. Duf-online.de needs all CSS files to be minified and compressed as it can save up to 11.7 kB or 75% of the original size.
Number of requests can be reduced by 16 (59%)
27
11
The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duf Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
duf-online.de
385 ms
typolight.css
185 ms
slimbox.css
186 ms
mootools.js
385 ms
slimbox.js
197 ms
mobile.js
283 ms
base.css
187 ms
scripts.js
226 ms
divfunctions.js
433 ms
reset.css
187 ms
typo.css
191 ms
layout.css
189 ms
debug.css
193 ms
bg-body.png
97 ms
content-shadow.png
186 ms
bg-headerline.png
189 ms
header-img.jpg
190 ms
duf-online-logo.png
191 ms
bg-navbar.png
192 ms
nav_verlauf.png
283 ms
bg-navbut-hover.png
373 ms
bg-navbut-left.png
374 ms
startseite-claim.png
375 ms
startseite-menschen.jpg
563 ms
bg-teaserbox.jpg
378 ms
bn-teaserbox.png
470 ms
bg-footerline.png
556 ms
ga.js
11 ms
__utm.gif
14 ms
print.css
98 ms
duf-online.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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
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
<frame> or <iframe> elements do not have a title
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
duf-online.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
duf-online.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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 Duf-online.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 Duf-online.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.
duf-online.de
Open Graph description is not detected on the main page of Duf Online. 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: