Analyze Postleitzahl Deutschland (PLZ Deutschland)

Postleitzahlen (PLZ) ✉ Deutschland, Österreich und Schweiz ✔ Einfach, schnell und kostenlos ➤ Informationen zu allen Städten mit Karten und mehr

Page load speed analysis

  • 68/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    427 ms

  • Resources loaded

    1.3 sec

  • Page rendered

    133 ms

  • Total page load time

    1.9 sec

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We analyzed page load time and found that the first response time was 427 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Page optimization

  • HTML 18.5 kB
    Images 50.4 kB
    Javascripts 138.9 kB
    CSS 595 B

    In fact, the total size of main page is 208.4 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. 30% of websites need less resources to load. Javascripts take 138.9 kB which makes up the majority of the site volume.

    • Original 18.5 kB
    • After minification 17.4 kB
    • After compression 4.1 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 14.4 kB or 78% of the original size.

    • Original 50.4 kB
    • After optimization 45.6 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. Postleitzahl images are well optimized though.

    • Original 138.9 kB
    • After minification 138.5 kB
    • After compression 52.6 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 86.3 kB or 62% of the original size.

    • Original 595 B
    • After minification 475 B
    • After compression 226 B

    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 369 B or 62% of the original size.

Network requests diagram

  • normal.css
  • show_ads.js
  • adsbygoogle.js
  • sidebar.js
  • cookie.js
  • blank.gif
  • header-1-de.gif
  • header-trenner.gif
  • icon-flag-germany.gif
  • icon-flag-austria.gif
  • icon-flag-swiss.gif
  • icon-flag-usa.gif
  • box-top-left.gif
  • icon-box-293.gif
  • box-top-right.gif
  • box-bottom-left.gif
  • box-bottom-right.gif
  • icon-box-278.gif
  • map.png
  • ca-pub-9176122611007749.js
  • zrt_lookup.html
  • show_ads_impl.js
  • box-top-middle.gif
  • box-border-left.gif
  • box-border-right.gif
  • box-bottom-middle.gif
  • small_51tkekJRRqL.jpg
  • kaufen.gif
  • small_31vAyoAiR8L.jpg
  • small_41yg+tnHXPL.jpg
  • ads
  • osd.js
  • ads
  • abg.js
  • m_js_controller.js
  • favicon
  • s
  • googlelogo_color_112x36dp.png
  • nessie_icon_thin_arrow_big_white.png
  • x_button_blue2.png
  • MdyApZkAHG2-UELdOwjNjjFZXSz-CGj4o1JtDR7aGgs.js

Our browser made a total of 42 requests to load all elements on the main page. We found that 50% of them (21 requests) were addressed to the original, 14% (6 requests) were made to and 12% (5 requests) were made to The less responsive or slowest element that took the longest time to load (485 ms) belongs to the original domain

Additional info on


The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Postleitzahl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Normal result

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 86400
NS 86400
NS 86400

2560 Mname:
Serial: 1542442143
Refresh: 16384
Retry: 2048
Expire: 1048576
Minimum-ttl: 2560
MX 86400 Pri: 0

Language and encoding

Poor result


DE de 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 German 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 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.

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 67.5% 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 Postleitzahl. 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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