4.1 sec in total
311 ms
3.7 sec
152 ms
Welcome to opus4.kobv.de homepage info - get ready to check OPUS 4 KOBV best content for Germany right away, or after learning these important things about opus4.kobv.de
Visit opus4.kobv.deWe analyzed Opus4.kobv.de page load time and found that the first response time was 311 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
opus4.kobv.de performance score
name
value
score
weighting
Value7.8 s
1/100
10%
Value9.9 s
1/100
25%
Value10.6 s
8/100
10%
Value90 ms
99/100
30%
Value0.076
95/100
15%
Value9.8 s
29/100
10%
311 ms
432 ms
615 ms
932 ms
435 ms
Our browser made a total of 45 requests to load all elements on the main page. We found that 4% of them (2 requests) were addressed to the original Opus4.kobv.de, 93% (42 requests) were made to Kobv.de and 2% (1 request) were made to . The less responsive or slowest element that took the longest time to load (932 ms) relates to the external source Kobv.de.
Page size can be reduced by 678.6 kB (72%)
945.8 kB
267.2 kB
In fact, the total size of Opus4.kobv.de main page is 945.8 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. 40% of websites need less resources to load. CSS take 509.7 kB which makes up the majority of the site volume.
Potential reduce by 49.3 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 49.3 kB or 87% of the original size.
Potential reduce by 6.6 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, OPUS 4 KOBV needs image optimization as it can save up to 6.6 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 245.0 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 245.0 kB or 69% of the original size.
Potential reduce by 377.6 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. Opus4.kobv.de needs all CSS files to be minified and compressed as it can save up to 377.6 kB or 74% of the original size.
Number of requests can be reduced by 36 (90%)
40
4
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OPUS 4 KOBV. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.
opus4.kobv.de
311 ms
opus4.kobv.de
432 ms
opus4
615 ms
932 ms
language-selector.css
435 ms
jquery-ui.css
313 ms
language-selector-click.css
465 ms
youtube-shortcode.css
213 ms
themify.framework.css
313 ms
themify-builder-style.css
426 ms
style.css
424 ms
media-queries.css
295 ms
lightbox.css
312 ms
style.css
462 ms
custom_style-68741c000a.css
495 ms
font-awesome.min.css
409 ms
suppa_frontend_style.css
410 ms
suppa_custom_style.css
511 ms
style-min.css
911 ms
hover-min.css
611 ms
jquery.js
723 ms
jquery-migrate.min.js
522 ms
language-selector.js
459 ms
audio-player.js
593 ms
core.min.js
423 ms
datepicker.min.js
434 ms
user.js
505 ms
carousel.min.js
621 ms
themify.builder.module.plugins.js
523 ms
themify.builder.script.js
533 ms
jquery.isotope.min.js
605 ms
jquery.infinitescroll.min.js
622 ms
themify.gallery.js
632 ms
lightbox.js
633 ms
comment-reply.min.js
705 ms
custom-themify.script.js
780 ms
suppa_js_settings.js
780 ms
effect.min.js
780 ms
suppa_frontend.min.js
780 ms
wp-embed.min.js
802 ms
sitepress.js
321 ms
wp-emoji-release.min.js
564 ms
logo_kobv.gif
178 ms
Twitter_logo_blue.png
179 ms
A3RCvTYAAAA=
5 ms
opus4.kobv.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.
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
opus4.kobv.de 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
opus4.kobv.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
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 Opus4.kobv.de 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 Opus4.kobv.de 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.
opus4.kobv.de
Open Graph description is not detected on the main page of OPUS 4 KOBV. 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: