Tools & Wizards About Us
stadtwerke-langen.de screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

stadtwerke-langen.de

Regionaler Energieversorger für Langen und Egelsbach

Page Load Speed

7.6 sec in total

First Response

1 sec

Resources Loaded

6.2 sec

Page Rendered

363 ms

stadtwerke-langen.de screenshot

About Website

Visit stadtwerke-langen.de now to see the best up-to-date Stadtwerke Langen content for Germany and also check out these interesting facts you probably never knew about stadtwerke-langen.de

Die Stadtwerke Langen sind Ihr regionaler Energieversorger für Langen und Egelsbach und bieten Ihnen eine Rundum-Versorgung mit Strom, Erdgas, Wärme und Trinkwasser.

Visit stadtwerke-langen.de

Key Findings

We analyzed Stadtwerke-langen.de page load time and found that the first response time was 1 sec 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

stadtwerke-langen.de performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value43.5 s

0/100

25%

SI (Speed Index)

Value34.2 s

0/100

10%

TBT (Total Blocking Time)

Value4,170 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.089

92/100

15%

TTI (Time to Interactive)

Value43.6 s

0/100

10%

Network Requests Diagram

stadtwerke-langen.de

1041 ms

g44yc.css

723 ms

Stadtwerke_Langen_logo.svg-1024x390.png

572 ms

Klingeln-300x300.png

620 ms

dummy.png

326 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 82% of them (40 requests) were addressed to the original Stadtwerke-langen.de, 14% (7 requests) were made to Swl-maleware.creative-upbeat.de and 2% (1 request) were made to Cdn.stadtwerk.bot. The less responsive or slowest element that took the longest time to load (2.8 sec) relates to the external source Cdn.stadtwerk.bot.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.3 MB (60%)

Content Size

3.8 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stadtwerke-langen.de main page is 3.8 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. 40% of websites need less resources to load. Javascripts take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 161.4 kB

  • Original 195.5 kB
  • After minification 195.4 kB
  • After compression 34.0 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 161.4 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 9.6 kB

  • Original 918.4 kB
  • After minification 908.8 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. Stadtwerke Langen images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 1.1 MB

  • Original 1.5 MB
  • After minification 1.5 MB
  • After compression 416.3 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 1.1 MB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 1.0 MB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 171.8 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. Stadtwerke-langen.de needs all CSS files to be minified and compressed as it can save up to 1.0 MB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (54%)

Requests Now

48

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stadtwerke Langen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

stadtwerke-langen.de

stadtwerke-langen.de

1041 ms

g44yc.css

g44yc.css

723 ms

Stadtwerke_Langen_logo.svg-1024x390.png

Stadtwerke_Langen_logo.svg-1024x390.png

572 ms

Klingeln-300x300.png

Klingeln-300x300.png

620 ms

dummy.png

dummy.png

326 ms

TLV-Siegel_2fach-kombi_strom_gas_2023_4c-e1673854821626-300x300.jpg

TLV-Siegel_2fach-kombi_strom_gas_2023_4c-e1673854821626-300x300.jpg

723 ms

g44xc.css

g44xc.css

541 ms

g44xc.css

g44xc.css

416 ms

SWL_Kachel_Energiespartipps2021_Final.jpg

SWL_Kachel_Energiespartipps2021_Final.jpg

721 ms

SWL_Kundenzentrum_small2.jpg

SWL_Kundenzentrum_small2.jpg

802 ms

SWL_Kachel_Energiepreisbremse-scaled-e1683875856163.jpg

SWL_Kachel_Energiepreisbremse-scaled-e1683875856163.jpg

615 ms

SWL_Formulare_small.jpg

SWL_Formulare_small.jpg

735 ms

SWL_Kachel_Zusamme_1a-1-scaled-e1683199598575.jpg

SWL_Kachel_Zusamme_1a-1-scaled-e1683199598575.jpg

765 ms

Toller-Bonus.jpg

Toller-Bonus.jpg

804 ms

cb-no-thumbnail.png

cb-no-thumbnail.png

782 ms

TUV-mit-text-300x166.jpg

TUV-mit-text-300x166.jpg

422 ms

VDE-TSM__scaled__171_68.png

VDE-TSM__scaled__171_68.png

422 ms

Siegel-klimateneutrales-Erdgas-FirstClimate-ZW-160mm-cmyk-Logo__scaled__86_86.png

Siegel-klimateneutrales-Erdgas-FirstClimate-ZW-160mm-cmyk-Logo__scaled__86_86.png

421 ms

RenewablePLUS-scaled-109-127-trans__scaled__85_100.png

RenewablePLUS-scaled-109-127-trans__scaled__85_100.png

524 ms

FirstClimate-Siegel-Oekogas-scaled-100-100__scaled__86_86.png

FirstClimate-Siegel-Oekogas-scaled-100-100__scaled__86_86.png

421 ms

DVGW-TSM__scaled__171_68.png

DVGW-TSM__scaled__171_68.png

533 ms

g44xe.js

g44xe.js

875 ms

g44xe.js

g44xe.js

838 ms

g44xe.js

g44xe.js

855 ms

g44xd.js

g44xd.js

871 ms

g44xd.js

g44xd.js

897 ms

swlangen.js

swlangen.js

2779 ms

preview-page.js

preview-page.js

706 ms

g44xd.js

g44xd.js

905 ms

g44xd.js

g44xd.js

958 ms

g44xd.js

g44xd.js

970 ms

g44xd.js

g44xd.js

975 ms

g44xd.js

g44xd.js

980 ms

g44xd.js

g44xd.js

1011 ms

g44xd.js

g44xd.js

1112 ms

g44xd.js

g44xd.js

1447 ms

g44xd.js

g44xd.js

1094 ms

g44xd.js

g44xd.js

1094 ms

g44xd.js

g44xd.js

1259 ms

g44xd.js

g44xd.js

1140 ms

g44xd.js

g44xd.js

1212 ms

g44xd.js

g44xd.js

1207 ms

g44xd.js

g44xd.js

1240 ms

g44xd.js

g44xd.js

1257 ms

g44xd.js

g44xd.js

1313 ms

g44xd.js

g44xd.js

1320 ms

g44xc.js

g44xc.js

1065 ms

g44xc.js

g44xc.js

981 ms

skyline-schmal2.png

skyline-schmal2.png

834 ms

Accessibility Review

stadtwerke-langen.de accessibility score

82

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.

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

stadtwerke-langen.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

stadtwerke-langen.de SEO score

84

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

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

stadtwerke-langen.de

Open Graph data is detected on the main page of Stadtwerke Langen. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: