Tools & Wizards About Us
stadtbuecherei-bochum.de screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 77

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 46

    SEO

    Google-friendlier than
    18% of websites

stadtbuecherei-bochum.de

OPAC Stadtbücherei Bochum

Page Load Speed

3.2 sec in total

First Response

456 ms

Resources Loaded

2.6 sec

Page Rendered

117 ms

stadtbuecherei-bochum.de screenshot

About Website

Welcome to stadtbuecherei-bochum.de homepage info - get ready to check Stadtbuecherei Bochum best content right away, or after learning these important things about stadtbuecherei-bochum.de

Visit stadtbuecherei-bochum.de

Key Findings

We analyzed Stadtbuecherei-bochum.de page load time and found that the first response time was 456 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

stadtbuecherei-bochum.de performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value3.8 s

85/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.4 s

98/100

10%

Network Requests Diagram

stadtbuecherei-bochum.de

456 ms

stadtbuecherei.bochum.de

796 ms

index.html.S

294 ms

index.html.S

186 ms

scripts-style.js.S

164 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 7% of them (1 request) were addressed to the original Stadtbuecherei-bochum.de, 93% (13 requests) were made to Stadtbuecherei.bochum.de. The less responsive or slowest element that took the longest time to load (796 ms) relates to the external source Stadtbuecherei.bochum.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 73.6 kB (82%)

Content Size

90.0 kB

After Optimization

16.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stadtbuecherei-bochum.de main page is 90.0 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Javascripts take 60.4 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 6.0 kB

  • Original 8.8 kB
  • After minification 8.2 kB
  • After compression 2.7 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 6.0 kB or 69% of the original size.

Image Optimization

-22%

Potential reduce by 1.4 kB

  • Original 6.4 kB
  • After minification 5.1 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, Stadtbuecherei Bochum needs image optimization as it can save up to 1.4 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-88%

Potential reduce by 53.1 kB

  • Original 60.4 kB
  • After minification 38.0 kB
  • After compression 7.3 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 53.1 kB or 88% of the original size.

CSS Optimization

-90%

Potential reduce by 13.1 kB

  • Original 14.5 kB
  • After minification 8.0 kB
  • After compression 1.4 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. Stadtbuecherei-bochum.de needs all CSS files to be minified and compressed as it can save up to 13.1 kB or 90% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

10

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stadtbuecherei Bochum. According to our analytics all requests are already optimized.

Network Requests Diagram

stadtbuecherei-bochum.de

stadtbuecherei-bochum.de

456 ms

stadtbuecherei.bochum.de

stadtbuecherei.bochum.de

796 ms

index.html.S

index.html.S

294 ms

index.html.S

index.html.S

186 ms

scripts-style.js.S

scripts-style.js.S

164 ms

scripts-opax.js.S

scripts-opax.js.S

639 ms

_leftop.js.S

_leftop.js.S

536 ms

OPAX-1024x768.css.S

OPAX-1024x768.css.S

395 ms

OPAX-1024x768.css.S

OPAX-1024x768.css.S

432 ms

wappen2.jpg.S

wappen2.jpg.S

155 ms

facebook.jpg.S

facebook.jpg.S

152 ms

blog.jpg.S

blog.jpg.S

146 ms

kontakt.jpg.S

kontakt.jpg.S

205 ms

top_31.gif.S

top_31.gif.S

244 ms

Accessibility Review

stadtbuecherei-bochum.de accessibility score

64

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

stadtbuecherei-bochum.de best practices score

77

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

stadtbuecherei-bochum.de SEO score

46

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stadtbuecherei-bochum.de 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 Stadtbuecherei-bochum.de 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.

Social Sharing Optimization

stadtbuecherei-bochum.de

Open Graph description is not detected on the main page of Stadtbuecherei Bochum. 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: