Analyze OST Fënsteren | Dieren | Glasfassaden zu Lëtzebuerg

OST Fenster steet fir traditionell handwierklech Qualitéit an innovatiivt Plangen bei der Hirstellung vu Fënsteren, Hausdieren a Glasfassaden.

Page load speed analysis

  • 67/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    389 ms

  • Resources loaded

    2 sec

  • Page rendered

    147 ms

  • Total page load time

    2.6 sec

Welcome to homepage info - get ready to check OST best content for Luxembourg right away, or after learning these important things about

We analyzed page load time and found that the first response time was 389 ms and then it took 2.2 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.

Page optimization

  • HTML 13.2 kB
    Images 47.2 kB
    Javascripts 244.9 kB
    CSS 81.9 kB

    In fact, the total size of main page is 387.2 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. 35% of websites need less resources to load. Javascripts take 244.9 kB which makes up the majority of the site volume.

    • Original 13.2 kB
    • After minification 12.5 kB
    • After compression 3.5 kB

    HTML optimization

    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 9.7 kB or 73% of the original size.

    • Original 47.2 kB
    • After optimization 41.6 kB

    Image optimization

    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, OST needs image optimization as it can save up to 5.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 244.9 kB
    • After minification 240.4 kB
    • After compression 84.0 kB

    JavaScript optimization

    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 160.9 kB or 66% of the original size.

    • Original 81.9 kB
    • After minification 61.0 kB
    • After compression 9.9 kB

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 72.0 kB or 88% of the original size.

Network requests diagram

  • standard.css
  • stylesheet_f10c897b38.css
  • wtgallery_main.css
  • jquery-1.4.4.min.js
  • jquery-1.6.2.min.js
  • jquery.fancybox.pack.js
  • jquery.accordion.js
  • jquery.imagecycle.js
  • common.js
  • javascript_0b12553063.js
  • bg.gif
  • start_header_bg.png
  • Krone.png
  • Produktzeile.png
  • start_logo.png
  • start_langnav_bg_off.gif
  • content_bg.png
  • big_bg.png
  • 3353d70399.jpg
  • 65358a1e3f.jpg
  • bd269c3a0a.jpg
  • big_tab_first_normal.png
  • cp.gif
  • 8567921053.png
  • 103727796c.jpg
  • big_tab_normal.png
  • b773841d19.png
  • f5164d38ef.jpg
  • b66428b091.png
  • 63fa1a33d7.jpg
  • c825aaa46d.png
  • 7788c884d5.jpg
  • d2036b4618.png
  • f2d7666b3f.jpg
  • big_tab_last_normal.png
  • 4cb9f8a4c6.png
  • 31c8f74f35.png
  • dbcef3be8c.png
  • c5a54e4e2d.jpg
  • footer_bg.png
  • pagenav_divider.gif
  • facebook.png
  • ga.js
  • __utm.gif
  • standard_print.css

Our browser made a total of 47 requests to load all elements on the main page. We found that 94% of them (44 requests) were addressed to the original, 4% (2 requests) were made to and 2% (1 request) were made to The less responsive or slowest element that took the longest time to load (724 ms) belongs to the original domain

Additional info on


The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OST. 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 from 4 to 1 for CSS and as a result speed up the page load time.









Possible request optimization











Normal result


As for redirects, our browser was forwarded to before it reached this domain.

IP address uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 600
NS 600
NS 600

86400 Mname:
Serial: 2020071444
Refresh: 28800
Retry: 7200
Expire: 604800
Minimum-ttl: 600
MX 600 Pri: 300

Language and encoding

Normal result


LB lb language flag


DE de language flag





Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Our service has detected that is used on the page, and it does not match the claimed German language. Our system also found out that 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.

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 97.1% of all visits is Luxembourg. It lies approximately 60 miles away from the server location (Germany) and such a small distance can positively affect website speed, as data can travel really fast between those locations.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of OST. 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:

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