4.8 sec in total
611 ms
4.1 sec
111 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 611 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
zdb-katalog.de performance score
name
value
score
weighting
Value7.9 s
0/100
10%
Value10.2 s
0/100
25%
Value8.5 s
17/100
10%
Value280 ms
81/100
30%
Value0.214
58/100
15%
Value10.4 s
24/100
10%
611 ms
592 ms
149 ms
314 ms
758 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 (1.4 sec) belongs to the original domain Zdb-katalog.de.
Page size can be reduced by 102.3 kB (18%)
575.4 kB
473.1 kB
In fact, the total size of Zdb-katalog.de main page is 575.4 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. 35% of websites need less resources to load. Images take 407.7 kB which makes up the majority of the site volume.
Potential reduce by 92.6 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 92.6 kB or 86% of the original size.
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 316 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 7.0 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. Zdb-katalog.de needs all CSS files to be minified and compressed as it can save up to 7.0 kB or 26% 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
611 ms
zdb-katalog.de
592 ms
theme.css.xhtml
149 ms
components.css.xhtml
314 ms
jquery.js.xhtml
758 ms
core.js.xhtml
508 ms
components.js.xhtml
1389 ms
jquery-plugins.js.xhtml
890 ms
jsf.js.xhtml
699 ms
primefaces-locale_en.js.xhtml
450 ms
zdb.core.js.xhtml
587 ms
opensans-woff.css
634 ms
opensans-woff2.css
721 ms
main.css
775 ms
lib-bundle.js.xhtml
1251 ms
bundle.js.xhtml
1127 ms
main.min.js.xhtml
885 ms
e.js
486 ms
opensans-woff.css
137 ms
opensans-woff2.css
128 ms
zdb_logo_weiss.svg.xhtml
210 ms
zdb_logo_ohne_text_weiss.svg.xhtml
208 ms
load-indicator.gif
254 ms
dnb_logo.svg.xhtml
204 ms
staatsbib-preussischer-kulturbesitz.svg.xhtml
206 ms
t.js
195 ms
mem8YaGs126MiZpBA-UFVZ0d.woff
189 ms
mem5YaGs126MiZpBA-UN7rgOUuhv.woff
362 ms
icomoon.woff
215 ms
country
131 ms
dcz
147 ms
home_bild.png
1064 ms
bx_loader.gif
187 ms
controls.png
240 ms
mem6YaGs126MiZpBA-UFUK0Zdcs.woff
237 ms
memnYaGs126MiZpBA-UFUKWiUNhrIqU.woff
250 ms
cntcc
470 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
EN
UTF-8
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 it matches the claimed language. Our system also found out that Zdb-katalog.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.
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: