8 sec in total
581 ms
4.8 sec
2.6 sec
Welcome to schulbuch-o-mat.de homepage info - get ready to check SCHULBUCH O MAT best content right away, or after learning these important things about schulbuch-o-mat.de
SCHULBUCH-O-MAT. Eine OER Schulbuch-Gemeinschaft
Visit schulbuch-o-mat.deWe analyzed Schulbuch-o-mat.de page load time and found that the first response time was 581 ms and then it took 7.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
schulbuch-o-mat.de performance score
name
value
score
weighting
Value4.7 s
12/100
10%
Value5.5 s
19/100
25%
Value8.6 s
17/100
10%
Value4,990 ms
0/100
30%
Value0.127
82/100
15%
Value22.3 s
1/100
10%
581 ms
230 ms
29 ms
8 ms
337 ms
Our browser made a total of 79 requests to load all elements on the main page. We found that 67% of them (53 requests) were addressed to the original Schulbuch-o-mat.de, 5% (4 requests) were made to Platform.twitter.com and 5% (4 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Schulbuch-o-mat.de.
Page size can be reduced by 615.8 kB (7%)
8.4 MB
7.8 MB
In fact, the total size of Schulbuch-o-mat.de main page is 8.4 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. 65% of websites need less resources to load. Images take 7.7 MB which makes up the majority of the site volume.
Potential reduce by 63.2 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 14.6 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 63.2 kB or 75% of the original size.
Potential reduce by 94.1 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. SCHULBUCH O MAT images are well optimized though.
Potential reduce by 159.2 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 159.2 kB or 68% of the original size.
Potential reduce by 299.3 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. Schulbuch-o-mat.de needs all CSS files to be minified and compressed as it can save up to 299.3 kB or 85% of the original size.
Number of requests can be reduced by 20 (27%)
75
55
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SCHULBUCH O MAT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
schulbuch-o-mat.de
581 ms
main.css
230 ms
css
29 ms
jquery-latest.js
8 ms
jquery.nivo.slider.js
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custom.js
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widgets.js
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fonts.css
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web-style.css
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twitter.css
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transitions.css
195 ms
media.css
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prettyPhoto.css
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logo_website.png
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happy.jpg
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brief.jpg
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serlo_sbom.jpg
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all.js
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home-icon.png
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tweet.2c548e167cf5bdb0bd941e41896f257d.js
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base.js
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tweet.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
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schulbuch-o-mat.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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
schulbuch-o-mat.de 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
schulbuch-o-mat.de SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Schulbuch-o-mat.de 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 Schulbuch-o-mat.de main page’s claimed encoding is iso-8859-1. 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.
schulbuch-o-mat.de
Open Graph description is not detected on the main page of SCHULBUCH O MAT. 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: