3.6 sec in total
479 ms
3 sec
92 ms
Click here to check amazing ZDB Katalog content for Singapore. Otherwise, check out these important facts you probably never knew about zdb-katalog.de
ZDB Magazines Database
Visit zdb-katalog.deWe analyzed Zdb-katalog.de page load time and found that the first response time was 479 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
zdb-katalog.de performance score
name
value
score
weighting
Value7.8 s
0/100
10%
Value11.0 s
0/100
25%
Value7.9 s
22/100
10%
Value210 ms
88/100
30%
Value0.103
89/100
15%
Value9.2 s
32/100
10%
479 ms
513 ms
133 ms
289 ms
688 ms
Our browser made a total of 37 requests to load all elements on the main page. We found that 92% of them (34 requests) were addressed to the original Zdb-katalog.de, 5% (2 requests) were made to Code.etracker.com and 3% (1 request) were made to Etracker.de. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Zdb-katalog.de.
Page size can be reduced by 3.5 kB (1%)
443.3 kB
439.8 kB
In fact, the total size of Zdb-katalog.de main page is 443.3 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. 45% of websites need less resources to load. Images take 407.7 kB which makes up the majority of the site volume.
Potential reduce by -8 B
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 web page is already compressed.
Potential reduce by 2.4 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. ZDB Katalog images are well optimized though.
Potential reduce by 272 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 834 B
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. Zdb-katalog.de needs all CSS files to be minified and compressed as it can save up to 834 B or 48% of the original size.
Number of requests can be reduced by 18 (60%)
30
12
The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZDB Katalog. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
zdb-katalog.de
479 ms
zdb-katalog.de
513 ms
theme.css.xhtml
133 ms
components.css.xhtml
289 ms
jquery.js.xhtml
688 ms
core.js.xhtml
461 ms
components.js.xhtml
1062 ms
jquery-plugins.js.xhtml
826 ms
jsf.js.xhtml
592 ms
primefaces-locale_en.js.xhtml
403 ms
zdb.core.js.xhtml
520 ms
opensans-woff.css
575 ms
opensans-woff2.css
635 ms
main.css
697 ms
lib-bundle.js.xhtml
1097 ms
bundle.js.xhtml
977 ms
main.min.js.xhtml
801 ms
e.js
540 ms
opensans-woff.css
115 ms
opensans-woff2.css
116 ms
zdb_logo_weiss.svg.xhtml
182 ms
zdb_logo_ohne_text_weiss.svg.xhtml
179 ms
load-indicator.gif
183 ms
dnb_logo.svg.xhtml
184 ms
staatsbib-preussischer-kulturbesitz.svg.xhtml
180 ms
t.js
177 ms
mem8YaGs126MiZpBA-UFVZ0d.woff
169 ms
mem5YaGs126MiZpBA-UN7rgOUuhv.woff
217 ms
icomoon.woff
197 ms
country
128 ms
dcz
121 ms
home_bild.png
237 ms
bx_loader.gif
169 ms
controls.png
169 ms
mem6YaGs126MiZpBA-UFUK0Zdcs.woff
205 ms
memnYaGs126MiZpBA-UFUKWiUNhrIqU.woff
216 ms
cntcc
516 ms
zdb-katalog.de accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA input fields do not have accessible names
[role]s do not have all required [aria-*] attributes
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
The document uses <meta http-equiv="refresh">
zdb-katalog.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
zdb-katalog.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
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdb-katalog.de can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zdb-katalog.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.
zdb-katalog.de
Open Graph description is not detected on the main page of ZDB Katalog. 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: