Tools & Wizards About Us

Report Summary

  • 73

    Performance

    Renders faster than
    82% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

stadtluzern.ch

Stadt Luzern

Page Load Speed

7 sec in total

First Response

380 ms

Resources Loaded

6.2 sec

Page Rendered

380 ms

About Website

Click here to check amazing Stadt Luzern content for Switzerland. Otherwise, check out these important facts you probably never knew about stadtluzern.ch

Auf dieser Seite finden Sie alles Wissenswerte zu unserer Stadt. Ausserdem können Sie am Online Schalter Dienstleistungen in Anspruch nehmen.

Visit stadtluzern.ch

Key Findings

We analyzed Stadtluzern.ch page load time and found that the first response time was 380 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

stadtluzern.ch performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

92/100

25%

SI (Speed Index)

Value4.8 s

66/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.366

29/100

15%

TTI (Time to Interactive)

Value4.9 s

78/100

10%

Network Requests Diagram

stadtluzern.ch

380 ms

www.stadtluzern.ch

1452 ms

legacy.9c5facc20eacee6a3099.css

99 ms

main.9758a873801d7415e268.css

298 ms

legacy.51916f73dcb2b798ddfe.js

376 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 71% of them (25 requests) were addressed to the original Stadtluzern.ch, 17% (6 requests) were made to Api.i-web.ch and 6% (2 requests) were made to Chat.aiaibot.com. The less responsive or slowest element that took the longest time to load (3.5 sec) relates to the external source Api.i-web.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 231.8 kB (11%)

Content Size

2.1 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stadtluzern.ch main page is 2.1 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. 25% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 107.7 kB

  • Original 126.9 kB
  • After minification 104.9 kB
  • After compression 19.3 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 22.0 kB, which is 17% 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 107.7 kB or 85% of the original size.

Image Optimization

-4%

Potential reduce by 71.5 kB

  • Original 1.9 MB
  • After minification 1.8 MB

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. Stadt Luzern images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 251 B

  • Original 26.9 kB
  • After minification 26.9 kB
  • After compression 26.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-73%

Potential reduce by 52.4 kB

  • Original 72.3 kB
  • After minification 72.3 kB
  • After compression 19.8 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. Stadtluzern.ch needs all CSS files to be minified and compressed as it can save up to 52.4 kB or 73% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

13

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stadt Luzern. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

stadtluzern.ch accessibility score

97

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

stadtluzern.ch best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

stadtluzern.ch SEO score

87

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

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stadtluzern.ch 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 English. Our system also found out that Stadtluzern.ch 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 Stadt Luzern. 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: