6.6 sec in total
1.4 sec
4.7 sec
483 ms
Visit dew21.de now to see the best up-to-date DEW21 content for Germany and also check out these interesting facts you probably never knew about dew21.de
Ob Strom, Gas, Wärme, Wasser, oder Elektromobilität - Die Dortmunder Energie- und Wasserversorgung GmbH ist Ihr Energieanbieter in Dortmund und der Region.
Visit dew21.deWe analyzed Dew21.de page load time and found that the first response time was 1.4 sec and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
dew21.de performance score
name
value
score
weighting
Value6.3 s
3/100
10%
Value10.2 s
0/100
25%
Value10.8 s
6/100
10%
Value1,940 ms
8/100
30%
Value0.165
71/100
15%
Value15.6 s
6/100
10%
1436 ms
191 ms
200 ms
194 ms
386 ms
Our browser made a total of 73 requests to load all elements on the main page. We found that 81% of them (59 requests) were addressed to the original Dew21.de, 5% (4 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Dew21.de.
Page size can be reduced by 472.1 kB (24%)
2.0 MB
1.5 MB
In fact, the total size of Dew21.de main page is 2.0 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. 55% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 81.4 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 26.3 kB, which is 27% 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 81.4 kB or 85% of the original size.
Potential reduce by 82.0 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. DEW21 images are well optimized though.
Potential reduce by 93.5 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 93.5 kB or 63% of the original size.
Potential reduce by 215.2 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. Dew21.de needs all CSS files to be minified and compressed as it can save up to 215.2 kB or 82% of the original size.
Number of requests can be reduced by 36 (55%)
65
29
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DEW21. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
www.dew21.de
1436 ms
jqueryui.css
191 ms
bootstrap.min.css
200 ms
responsive.css
194 ms
custom.min.css
386 ms
flexslider.css
194 ms
font-awesome.min.css
208 ms
responsive-tables.min.css
285 ms
html5shiv.js
289 ms
jquery.min.js
33 ms
css
68 ms
jqcloud-1.0.4.min.js
196 ms
cookie.min.js
201 ms
uo.module.tariffcalculator.startseite.js
206 ms
jquery.cookiesdirective.min.js
282 ms
bootstrap-transition.js
330 ms
bootstrap-tab.min.js
330 ms
bootstrap-tooltip.min.js
331 ms
bootstrap-popover.min.js
332 ms
bootstrap-collapse.min.js
379 ms
css
38 ms
jquery.flexslider-min.js
381 ms
doubletaptogo.min.js
382 ms
jquery.hammer.min.js
386 ms
responsiveCarousel.min.js
395 ms
jquery-ui.min.js
5 ms
uo_slider.js
402 ms
jquery.ui.touch-punch.min.js
469 ms
uo-scripts.js
477 ms
jquery.validate.min.js
58 ms
responsive-tables.min.js
476 ms
bootstrap-typeahead.min.js
480 ms
mstream.ashx
335 ms
mstream.ashx
1061 ms
mstream.ashx
691 ms
120927-1343_Muffenmontage_0268.jpg
1132 ms
visual_photovoltaik.png
2152 ms
startteaser_auszeichnungen.png
666 ms
visual_heizungspumpe.png
577 ms
teaser_heizungskonfortpaket.png
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startteaser_strom_fix.png
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mstream.ashx
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mstream.ashx
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mstream.ashx
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mstream.ashx
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mstream.ashx
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mstream.ashx
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mstream.ashx
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analytics.js
28 ms
mstream.ashx
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mstream.ashx
1543 ms
head.png
1559 ms
metanav.png
1578 ms
mainnav.png
1638 ms
collect
12 ms
icons.data.png.css
1610 ms
fontawesome-webfont.woff
1669 ms
input_tarifberater.png
1735 ms
input_meinkonto.png
1732 ms
collect
49 ms
pixel
22 ms
pixel
20 ms
K6ngFdK5haaaRGBV8waDwA.ttf
49 ms
isshandler.ashx
180 ms
bg_direction_nav.png
107 ms
toadOcfmlt9b38dHJxOBGNNE-IuDiR70wI4zXaKqWCM.ttf
63 ms
toadOcfmlt9b38dHJxOBGLsbIrGiHa6JIepkyt5c0A0.ttf
78 ms
ODelI1aHBYDBqgeIAH2zlNzbP97U9sKh0jjxbPbfOKg.ttf
104 ms
dew21.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
[aria-*] attributes do not have valid values
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
Form elements do not have associated labels
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
List items (<li>) are not contained within <ul> or <ol> parent elements.
dew21.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
dew21.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Dew21.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 Dew21.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.
dew21.de
Open Graph description is not detected on the main page of DEW21. 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: