5.4 sec in total
562 ms
4.4 sec
441 ms
Visit lumena.ch now to see the best up-to-date Lumena content and also check out these interesting facts you probably never knew about lumena.ch
Tageslichtsysteme, Raumbeleuchtung, Heliostat, Lichtkanal - Tageslicht befriedigt ein Urbedürfnis des Menschen. Mit seinem natürlichen Spektrum schafft das Tageslicht eine lebendige, ständig wechselnd...
Visit lumena.chWe analyzed Lumena.ch page load time and found that the first response time was 562 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
lumena.ch performance score
name
value
score
weighting
Value4.6 s
13/100
10%
Value10.6 s
0/100
25%
Value8.1 s
21/100
10%
Value1,430 ms
15/100
30%
Value0
100/100
15%
Value12.7 s
13/100
10%
562 ms
199 ms
494 ms
698 ms
296 ms
Our browser made a total of 22 requests to load all elements on the main page. We found that 77% of them (17 requests) were addressed to the original Lumena.ch, 18% (4 requests) were made to Google-analytics.com and 5% (1 request) were made to Tracking.globonet.ch. The less responsive or slowest element that took the longest time to load (3.3 sec) relates to the external source Tracking.globonet.ch.
Page size can be reduced by 141.4 kB (59%)
239.8 kB
98.4 kB
In fact, the total size of Lumena.ch main page is 239.8 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 198.4 kB which makes up the majority of the site volume.
Potential reduce by 11.6 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 2.5 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 11.6 kB or 79% of the original size.
Potential reduce by 9.1 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, Lumena needs image optimization as it can save up to 9.1 kB or 34% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 120.8 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 120.8 kB or 61% of the original size.
Number of requests can be reduced by 7 (35%)
20
13
The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lumena. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.
lumena.ch
562 ms
print.js
199 ms
swfobject_modified.js
494 ms
jquery_1.4.2.js
698 ms
jquery.easing.js
296 ms
smoothscroll.js
198 ms
style.css
398 ms
navstyle.css
296 ms
portlets.css
313 ms
ga.js
39 ms
mainBackground.png
101 ms
bgcontainer.png
105 ms
Logo%20Englisch.jpg
304 ms
homebild-neu.jpg
414 ms
Lumenasolar.jpg
302 ms
contentBoxBackground.png
303 ms
bg_footer_nav.jpg
203 ms
bg_arrowtop.gif
203 ms
piwik.js
3288 ms
analytics.js
6 ms
__utm.gif
22 ms
collect
12 ms
lumena.ch accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a valid value for its [lang] attribute.
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
Links do not have a discernible name
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
lumena.ch 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
Browser errors were logged to the console
Page has valid source maps
lumena.ch 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
N/A
WINDOWS-1252
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lumena.ch can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Lumena.ch main page’s claimed encoding is windows-1252. 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.
lumena.ch
Open Graph description is not detected on the main page of Lumena. 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: