4.1 sec in total
663 ms
3.3 sec
168 ms
Visit portal.d-nb.de now to see the best up-to-date Portal DNB content for Germany and also check out these interesting facts you probably never knew about portal.d-nb.de
Visit portal.d-nb.deWe analyzed Portal.d-nb.de page load time and found that the first response time was 663 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
portal.d-nb.de performance score
name
value
score
weighting
Value3.1 s
47/100
10%
Value3.1 s
75/100
25%
Value3.5 s
88/100
10%
Value10 ms
100/100
30%
Value0.001
100/100
15%
Value3.1 s
95/100
10%
663 ms
666 ms
220 ms
96 ms
188 ms
Our browser made a total of 47 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Portal.d-nb.de, 96% (45 requests) were made to Portal.dnb.de and 2% (1 request) were made to Dbspixel.hbz-nrw.de. The less responsive or slowest element that took the longest time to load (734 ms) relates to the external source Portal.dnb.de.
Page size can be reduced by 14.1 kB (77%)
18.3 kB
4.2 kB
In fact, the total size of Portal.d-nb.de main page is 18.3 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. 15% of websites need less resources to load. HTML takes 18.3 kB which makes up the majority of the site volume.
Potential reduce by 14.1 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 14.1 kB or 77% of the original size.
Number of requests can be reduced by 37 (84%)
44
7
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Portal DNB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
portal.d-nb.de
663 ms
portal.dnb.de
666 ms
opac.htm;jsessionid=D0C1E8B4D438FAE4E0DDF57FDAB4FA79.prod-worker0
220 ms
layout_2col_73.css
96 ms
webservice.css
188 ms
dnb.css
281 ms
style.css
281 ms
onLoadBody.js
278 ms
rememberPosition.js
279 ms
popups.js
277 ms
sendForm.js
283 ms
help.js
368 ms
formFunctions.js
371 ms
checkTextAreaLength.js
371 ms
toggleCheckboxes.js
372 ms
calendar-win2k-cold-1.css
372 ms
calendar.js
550 ms
calendar-de.js
460 ms
calendar-setup.js
464 ms
jquery-1.11.0.min.js
734 ms
jquery-migrate-1.2.1.min.js
462 ms
jquery.socialshareprivacy.js
552 ms
count
616 ms
transparent.gif
97 ms
header_0.gif
94 ms
logo.gif
93 ms
header_1.gif
97 ms
header_2.gif
95 ms
header_3.gif
94 ms
header_4.gif
187 ms
header_5.gif
186 ms
header_6.gif
187 ms
header_7.gif
187 ms
header_8.gif
195 ms
header_haeuser.gif
194 ms
pfeil_search_unten.gif
280 ms
pfeil_search_weiss.gif
280 ms
pfeil_search.gif
279 ms
button_start.gif
281 ms
pfeil_on.gif
288 ms
button_suche_gelb.gif
286 ms
icon_info.gif
372 ms
listenpunkt.gif
371 ms
icon_email_klein.gif
372 ms
banner_fuss.gif
376 ms
spacer.gif
379 ms
print.css
96 ms
portal.d-nb.de accessibility score
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
Form elements do not have associated labels
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
portal.d-nb.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
portal.d-nb.de SEO score
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
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Portal.d-nb.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 Portal.d-nb.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.
portal.d-nb.de
Open Graph description is not detected on the main page of Portal DNB. 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: