1.4 sec in total
406 ms
529 ms
464 ms
Welcome to optical-brightener.de homepage info - get ready to check Optical Brightener best content right away, or after learning these important things about optical-brightener.de
Visit optical-brightener.deWe analyzed Optical-brightener.de page load time and found that the first response time was 406 ms and then it took 993 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
optical-brightener.de performance score
name
value
score
weighting
Value3.7 s
30/100
10%
Value3.8 s
56/100
25%
Value8.9 s
15/100
10%
Value2,430 ms
5/100
30%
Value0.081
94/100
15%
Value8.9 s
35/100
10%
406 ms
Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Optical-brightener.de and no external sources were called. The less responsive or slowest element that took the longest time to load (406 ms) belongs to the original domain Optical-brightener.de.
Page size can be reduced by 339.7 kB (11%)
3.2 MB
2.9 MB
In fact, the total size of Optical-brightener.de main page is 3.2 MB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.
Potential reduce by 7.4 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. 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 7.4 kB or 65% of the original size.
Potential reduce by 252.1 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. Optical Brightener images are well optimized though.
Potential reduce by 32.3 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 32.3 kB or 15% of the original size.
Potential reduce by 47.9 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-brightener.de needs all CSS files to be minified and compressed as it can save up to 47.9 kB or 25% of the original size.
We found no issues to fix!
0
0
Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.
optical-brightener.de
406 ms
optical-brightener.de 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
Links do not have a discernible name
optical-brightener.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
optical-brightener.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
N/A
EN
UTF8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Optical-brightener.de can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Optical-brightener.de main page’s claimed encoding is utf8. 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.
optical-brightener.de
Open Graph description is not detected on the main page of Optical Brightener. 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: