Die Stadtbibliothek Bremen erfüllt mit ihrem Medien- und Dienstleistungsangebot einen Bildungs-, Kultur- und Informationsauftrag. An ihren zentralen und dezentralen Standorten hält sie über 500.000 Me...

Page load speed analysis

  • 60/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    308 ms

  • Resources loaded

    2.5 sec

  • Page rendered

    308 ms

  • Total page load time

    3.1 sec

Click here to check amazing Stadtbibliothek Bremen content for Germany. Otherwise, check out these important facts you probably never knew about

We analyzed page load time and found that the first response time was 308 ms and then it took 2.8 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 62.9 kB
    Images 995.3 kB
    Javascripts 243.1 kB
    CSS 74.3 kB

    In fact, the total size of main page is 1.4 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. 60% of websites need less resources to load. Images take 995.3 kB which makes up the majority of the site volume.

    • Original 62.9 kB
    • After minification 59.1 kB
    • After compression 11.2 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 51.8 kB or 82% of the original size.

    • Original 995.3 kB
    • After optimization 895.2 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. Stadtbibliothek Bremen images are well optimized though.

    • Original 243.1 kB
    • After minification 222.7 kB
    • After compression 77.3 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 165.8 kB or 68% of the original size.

    • Original 74.3 kB
    • After minification 54.7 kB
    • After compression 13.0 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 61.3 kB or 82% of the original size.

Network requests diagram

  • styles2015.css
  • contentslider.css
  • sonofsuckerfish.css
  • jquery.jscrollpane.css
  • stripviewer.css
  • scrollable-horizontal.css
  • scrollable-buttons.css
  • amazonsearch.css
  • jquery-latest.js
  • jquery-ui.min.js
  • search.js
  • reflection.js
  • jquery.mousewheel.js
  • jquery.jscrollpane.min.js
  • jquery.socialshareprivacy.js
  • jquery.fancybox-1.3.4.css
  • jquery.fancybox-1.3.4.pack.js
  • jquery.easing-1.3.pack.js
  • jquery.mousewheel-3.0.4.pack.js
  • jquery.rating.css
  • jquery.rating.js
  • bubbleup.css
  • jquery.bubbleup.js
  • style.css
  • wowslider.js
  • script.js
  • bg_buchstaben_2015.png
  • leichtesprache.gif
  • logo.png
  • Slider_Erfahren_994.jpg
  • banner_welcome_aca.jpg
  • slider_studis_1c3.jpg
  • Slider_App_f3d.jpg
  • dummy.gif
  • 3404172442.03.MZZZZZZZ.jpg
  • 9783193010032.jpg
  • count
  • mein_konto2.gif
  • minilangarrow.gif
  • bg_form.png
  • a_search_arrow.png
  • suchpfeil.png
  • bullet.png
  • aussen_304_63b.jpg
  • si_facebook.png
  • si_twitter.png
  • si_rss.png
  • si_youtube.png
  • si_vimeo.png
  • si_mail.png
  • infobox_01_98e.png
  • infobox_02_443.png
  • arrow_blue_on_grey.gif
  • kulturticket_b8e.jpg
  • link_extern.gif
  • diversity_461.jpg
  • 3erblock2_762.png
  • 9783423212625.jpg
  • 9783446443624.jpg
  • 9783499631160.jpg
  • 9783507101012.jpg
  • 9783625174356.jpg
  • 9783737360111.jpg
  • 9783833900259.jpg
  • 9783846427392.jpg
  • 9783846428238.jpg
  • 9783942787642.jpg
  • 9783943425529.jpg
  • 9783957985606.jpg
  • 9783990141212.jpg
  • 3406679749.03.MZZZZZZZ.jpg
  • 3421040087.03.MZZZZZZZ.jpg
  • 3423216107.03.MZZZZZZZ.jpg
  • 3453270118.03.MZZZZZZZ.jpg
  • 3453419022.03.MZZZZZZZ.jpg
  • 3456854684.03.MZZZZZZZ.jpg
  • 3458176314.03.MZZZZZZZ.jpg
  • 3492306136.03.MZZZZZZZ.jpg
  • 349230706X.03.MZZZZZZZ.jpg
  • 3498058037.03.MZZZZZZZ.jpg
  • 3527710795.03.MZZZZZZZ.jpg
  • 3548286569.03.MZZZZZZZ.jpg
  • 3551518726.03.MZZZZZZZ.jpg
  • 3715206985.03.MZZZZZZZ.jpg
  • 373410033X.03.MZZZZZZZ.jpg
  • 3794531361.03.MZZZZZZZ.jpg
  • 3833735864.03.MZZZZZZZ.jpg
  • 383384227X.03.MZZZZZZZ.jpg
  • 3867391440.03.MZZZZZZZ.jpg
  • 3867406588.03.MZZZZZZZ.jpg
  • 3868511547.03.MZZZZZZZ.jpg
  • 3895653047.03.MZZZZZZZ.jpg
  • 3940435171.03.MZZZZZZZ.jpg
  • 3956491637.03.MZZZZZZZ.jpg
  • 3956491874.03.MZZZZZZZ.jpg
  • arrow_blue_right.gif
  • coverflip_arrow.gif
  • colorline.gif
  • arrow_grey_right2.png
  • t.js
  • cnt_js.php
  • cntcc
  • print.css

Our browser made a total of 106 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original, 55% (58 requests) were made to and 25% (26 requests) were made to The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source

Additional info on


The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stadtbibliothek Bremen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 13 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 2 other domains. 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 180
NS 180
NS 180
NS 180

180 Mname:
Serial: 2020120805
Refresh: 86400
Retry: 10800
Expire: 3600000
Minimum-ttl: 180

Language and encoding

Normal result


N/A  language flag


DE de 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. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is German. 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 100% of all visits is Germany. It’s good for that their server is also located in Germany, 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 Stadtbibliothek Bremen. 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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