Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

opn-city.de

openPHPnuke

Page Load Speed

2.3 sec in total

First Response

604 ms

Resources Loaded

1.6 sec

Page Rendered

175 ms

opn-city.de screenshot

About Website

Visit opn-city.de now to see the best up-to-date Opn City content and also check out these interesting facts you probably never knew about opn-city.de

Webmaster Tools

Visit opn-city.de

Key Findings

We analyzed Opn-city.de page load time and found that the first response time was 604 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

opn-city.de performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value230 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.09

92/100

15%

TTI (Time to Interactive)

Value4.0 s

87/100

10%

Network Requests Diagram

opn-city.de

604 ms

style.css

292 ms

theme.css

293 ms

calendar.css

294 ms

dropdownmenu.css

295 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 95% of them (42 requests) were addressed to the original Opn-city.de, 5% (2 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (604 ms) belongs to the original domain Opn-city.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 130.3 kB (76%)

Content Size

170.9 kB

After Optimization

40.7 kB

In fact, the total size of Opn-city.de main page is 170.9 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. 20% of websites need less resources to load. Javascripts take 93.4 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 16.9 kB

  • Original 21.7 kB
  • After minification 21.5 kB
  • After compression 4.8 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 16.9 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 306 B

  • Original 14.9 kB
  • After minification 14.6 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. Opn City images are well optimized though.

JavaScript Optimization

-84%

Potential reduce by 78.5 kB

  • Original 93.4 kB
  • After minification 60.3 kB
  • After compression 14.9 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 78.5 kB or 84% of the original size.

CSS Optimization

-84%

Potential reduce by 34.5 kB

  • Original 41.0 kB
  • After minification 33.5 kB
  • After compression 6.4 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. Opn-city.de needs all CSS files to be minified and compressed as it can save up to 34.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (84%)

Requests Now

43

After Optimization

7

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opn City. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

opn-city.de accessibility score

93

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

opn-city.de best practices score

75

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

opn-city.de SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    ISO-8859-1

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

Open Graph description is not detected on the main page of Opn City. 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: