4.4 sec in total
811 ms
3.4 sec
229 ms
Click here to check amazing Zwave 4 U content for Germany. Otherwise, check out these important facts you probably never knew about zwave4u.com
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Visit zwave4u.comWe analyzed Zwave4u.com page load time and found that the first response time was 811 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
zwave4u.com performance score
name
value
score
weighting
Value3.1 s
46/100
10%
Value9.0 s
1/100
25%
Value7.8 s
24/100
10%
Value3,700 ms
1/100
30%
Value0
100/100
15%
Value20.1 s
2/100
10%
811 ms
711 ms
928 ms
1371 ms
1043 ms
Our browser made a total of 31 requests to load all elements on the main page. We found that 87% of them (27 requests) were addressed to the original Zwave4u.com, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Encrypted-tbn2.gstatic.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Zwave4u.com.
Page size can be reduced by 173.9 kB (42%)
415.4 kB
241.4 kB
In fact, the total size of Zwave4u.com main page is 415.4 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. Only 10% of websites need less resources to load. Images take 177.7 kB which makes up the majority of the site volume.
Potential reduce by 15.7 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 15.7 kB or 67% of the original size.
Potential reduce by 12.3 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. Zwave 4 U images are well optimized though.
Potential reduce by 113.3 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 113.3 kB or 64% of the original size.
Potential reduce by 32.6 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. Zwave4u.com needs all CSS files to be minified and compressed as it can save up to 32.6 kB or 86% of the original size.
Number of requests can be reduced by 9 (30%)
30
21
The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zwave 4 U. 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 as a result speed up the page load time.
zwave4u.com
811 ms
stylesheet.css
711 ms
thickbox.css
928 ms
jquery.js
1371 ms
thickbox.js
1043 ms
analytics.js
42 ms
images
50 ms
bg.jpg
228 ms
navbar.jpg
229 ms
seperator.jpg
228 ms
input_bg.gif
230 ms
button_quick_find.png
232 ms
top_logo_english.jpg
901 ms
infobar.jpg
446 ms
cart_icon.png
448 ms
icon.gif
448 ms
icon.gif
446 ms
contenttop.jpg
446 ms
contentmiddle.jpg
659 ms
contentbottom.jpg
667 ms
boxheadline.jpg
663 ms
boxcontent.jpg
665 ms
arrow.gif
664 ms
boxbottom.jpg
884 ms
button_login_small.gif
878 ms
button_add_quick.gif
881 ms
button_login_newsletter.gif
879 ms
17772_0.jpg
881 ms
piwik.js
718 ms
collect
12 ms
loadingAnimation.gif
446 ms
zwave4u.com 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
[aria-*] attributes do not match their roles
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
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.
zwave4u.com 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
Missing source maps for large first-party JavaScript
zwave4u.com SEO score
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
DE
EN
ISO-8859-15
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zwave4u.com can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it does not match the claimed English language. Our system also found out that Zwave4u.com main page’s claimed encoding is iso-8859-15. 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.
zwave4u.com
Open Graph description is not detected on the main page of Zwave 4 U. 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: