Analyze Digitalna Narodna biblioteka Srbije

Digitalna Narodna biblioteka Srbije, digitalna, digitalizacija, digitalna biblioteka, digitalne zbirke, digitalna humanistika, digitalni objekat, digitalni dokument, metapodaci, kulturno nasledje, kul...

Page load speed analysis

  • 56/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    349 ms

  • Resources loaded

    2.5 sec

  • Page rendered

    161 ms

  • Total page load time

    3 sec

Visit now to see the best up-to-date Digital Nb content for Serbia and also check out these interesting facts you probably never knew about

We analyzed page load time and found that the first response time was 349 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Page optimization

  • HTML 36.0 kB
    Images 93.0 kB
    Javascripts 681.2 kB
    CSS 60.9 kB

    In fact, the total size of main page is 871.1 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. 30% of websites need less resources to load. Javascripts take 681.2 kB which makes up the majority of the site volume.

    • Original 36.0 kB
    • After minification 34.2 kB
    • After compression 8.7 kB

    HTML optimization

    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 27.2 kB or 76% of the original size.

    • Original 93.0 kB
    • After optimization 87.9 kB

    Image optimization

    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. Digital Nb images are well optimized though.

    • Original 681.2 kB
    • After minification 448.1 kB
    • After compression 134.8 kB

    JavaScript optimization

    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 546.5 kB or 80% of the original size.

    • Original 60.9 kB
    • After minification 50.5 kB
    • After compression 12.3 kB

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 48.6 kB or 80% of the original size.

Network requests diagram

  • jspwiki.css
  • design.css
  • skin.css
  • mootools.js
  • jquery-1.11.no_conflict.js
  • ajax_search.js
  • jspwiki-common.js
  • berniecode-animator.js
  • soundmanager2-nodebug-jsmin.js
  • 360player.js
  • jspwiki-commonstyles.js
  • tagging.js
  • dhtmlwindow.js
  • design.js
  • ajaxlinktracker.js
  • analytics.js
  • scaled-155x60_logo-velikirat.png
  • scaled-250x170_Ilustrovani_pregled.jpg
  • scaled-250x170_zena-isvet.jpg
  • scaled-150x150_logo-digitalna.png
  • scaled-200x200_stefan%20dusan.jpg
  • scaled-200x200_zvucne%20knjige.jpg
  • scaled-200x200_EU.jpg
  • cb-fav.png
  • out.png
  • smart-logo.gif
  • cb-1.png
  • cb-2.png
  • user.png
  • collect
  • collect
  • jspwiki_print.css

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original, 88% (30 requests) were made to and 6% (2 requests) were made to The less responsive or slowest element that took the longest time to load (955 ms) relates to the external source

Additional info on


The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Digital Nb. 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 4 to 1 for CSS and as a result speed up the page load time.









Possible request optimization











Normal result


As for redirects, our browser was forwarded to before it reached this domain.

IP address uses IP address which is currently shared with 1 other domain. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 280

Language and encoding

Normal result


SR sr language flag


N/A  language flag





Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Our service has detected that Serbian 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 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.

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 32.4% of all visits is Serbia. It’s good for that their server is also located in Serbia, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Digital Nb. 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:

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