Tools & Wizards About Us

Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

retrobibliothek.de

Willkommen bei der retro-Bibliothek

Page Load Speed

2.5 sec in total

First Response

236 ms

Resources Loaded

2.1 sec

Page Rendered

87 ms

About Website

Click here to check amazing Retro Bibliothek content for Germany. Otherwise, check out these important facts you probably never knew about retrobibliothek.de

Retrodigitalisierte Nachschlagewerke um 1900 mit Volltextsuche und Faksimile

Visit retrobibliothek.de

Key Findings

We analyzed Retrobibliothek.de page load time and found that the first response time was 236 ms and then it took 2.2 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.

Performance Metrics

retrobibliothek.de performance score

0

Network Requests Diagram

retrobibliothek.de

236 ms

retrobibliothek.de

433 ms

index.html

490 ms

retrobib.css

107 ms

prototype.js

322 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Retrobibliothek.de and no external sources were called. The less responsive or slowest element that took the longest time to load (490 ms) belongs to the original domain Retrobibliothek.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 36.9 kB (37%)

Content Size

100.9 kB

After Optimization

64.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Retrobibliothek.de main page is 100.9 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. Javascripts take 49.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 10.8 kB

  • Original 14.4 kB
  • After minification 9.9 kB
  • After compression 3.6 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. This page needs HTML code to be minified as it can gain 4.5 kB, which is 31% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 10.8 kB or 75% of the original size.

Image Optimization

-29%

Potential reduce by 6.7 kB

  • Original 23.3 kB
  • After minification 16.6 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. Obviously, Retro Bibliothek needs image optimization as it can save up to 6.7 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-24%

Potential reduce by 11.9 kB

  • Original 49.4 kB
  • After minification 49.1 kB
  • After compression 37.6 kB

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 11.9 kB or 24% of the original size.

CSS Optimization

-55%

Potential reduce by 7.5 kB

  • Original 13.8 kB
  • After minification 11.6 kB
  • After compression 6.3 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. Retrobibliothek.de needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 55% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (67%)

Requests Now

18

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Retro Bibliothek. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

SEO Factors

retrobibliothek.de SEO score

0

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Retrobibliothek.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 Retrobibliothek.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Retro Bibliothek. 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: