Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

kalender.com

Online Kalender und Terminplaner - kalender.com

Page Load Speed

4.3 sec in total

First Response

406 ms

Resources Loaded

3.7 sec

Page Rendered

128 ms

About Website

Visit kalender.com now to see the best up-to-date Kalender content for Germany and also check out these interesting facts you probably never knew about kalender.com

Kalender.com für Termine, Geburtstage und die Urlaubsplanung

Visit kalender.com

Key Findings

We analyzed Kalender.com page load time and found that the first response time was 406 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

kalender.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

22/100

25%

SI (Speed Index)

Value6.1 s

44/100

10%

TBT (Total Blocking Time)

Value650 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

kalender.com

406 ms

www.kalender.com

778 ms

bootstrap.css

195 ms

bootstrap-theme.css

303 ms

font-awesome.css

289 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 51% of them (28 requests) were addressed to the original Kalender.com, 15% (8 requests) were made to Tpc.googlesyndication.com and 9% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (778 ms) belongs to the original domain Kalender.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 777.8 kB (72%)

Content Size

1.1 MB

After Optimization

295.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kalender.com main page is 1.1 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. 55% of websites need less resources to load. Javascripts take 746.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 47.0 kB

  • Original 56.2 kB
  • After minification 51.6 kB
  • After compression 9.2 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 47.0 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 1.4 kB

  • Original 19.5 kB
  • After minification 18.1 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. Kalender images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 519.0 kB

  • Original 746.9 kB
  • After minification 702.6 kB
  • After compression 228.0 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 519.0 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 210.4 kB

  • Original 250.5 kB
  • After minification 202.5 kB
  • After compression 40.2 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. Kalender.com needs all CSS files to be minified and compressed as it can save up to 210.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (66%)

Requests Now

47

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kalender. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

kalender.com accessibility score

79

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

Buttons do not have an accessible name

High

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

High

Links do not have a discernible name

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.

Best Practices

kalender.com best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

kalender.com SEO score

86

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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