3 sec in total
351 ms
2.3 sec
328 ms
Visit optical-systems.com now to see the best up-to-date Optical Systems content for Germany and also check out these interesting facts you probably never knew about optical-systems.com
Ferngläser, Nachtsichtgeräte, Spektive, Fernrohre, Zielfernrohre, Mikroskope, Entfernungsmesser. Optik, Astronomie und Mikroskopie. Windmesser, Stative, Taschenlampen, Kompasse
Visit optical-systems.comWe analyzed Optical-systems.com page load time and found that the first response time was 351 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
optical-systems.com performance score
name
value
score
weighting
Value5.2 s
8/100
10%
Value12.0 s
0/100
25%
Value10.8 s
6/100
10%
Value6,600 ms
0/100
30%
Value0.327
35/100
15%
Value17.2 s
4/100
10%
351 ms
970 ms
38 ms
569 ms
306 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 43% of them (22 requests) were addressed to the original Optical-systems.com, 18% (9 requests) were made to Toxid.explorescientific.de and 8% (4 requests) were made to Cms.optical-systems.com. The less responsive or slowest element that took the longest time to load (970 ms) belongs to the original domain Optical-systems.com.
Page size can be reduced by 674.5 kB (46%)
1.5 MB
794.2 kB
In fact, the total size of Optical-systems.com main page is 1.5 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. 45% of websites need less resources to load. Images take 537.8 kB which makes up the majority of the site volume.
Potential reduce by 153.9 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 94.4 kB, which is 56% 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 153.9 kB or 91% of the original size.
Potential reduce by 31.7 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. Optical Systems images are well optimized though.
Potential reduce by 213.0 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 213.0 kB or 63% of the original size.
Potential reduce by 275.9 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. Optical-systems.com needs all CSS files to be minified and compressed as it can save up to 275.9 kB or 65% of the original size.
Number of requests can be reduced by 12 (28%)
43
31
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical Systems. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
optical-systems.com
351 ms
www.optical-systems.com
970 ms
analytics.js
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theme.min.css
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jquery.min.js
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jquery-ui.custom.min.js
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optical-systems.com 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
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
optical-systems.com 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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
optical-systems.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
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 Optical-systems.com 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 Optical-systems.com 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.
optical-systems.com
Open Graph description is not detected on the main page of Optical Systems. 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: