Tools & Wizards About Us
radio-koeln.de screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

radio-koeln.de

Eure Nr. 1 - Radio Köln

Page Load Speed

5.8 sec in total

First Response

302 ms

Resources Loaded

4.9 sec

Page Rendered

525 ms

radio-koeln.de screenshot

About Website

Visit radio-koeln.de now to see the best up-to-date Radio Koeln content for Germany and also check out these interesting facts you probably never knew about radio-koeln.de

Seit 1991 sind wir Euer Lokalradio in Köln. Auf der 107.1 MHz, unserer Radio Köln - App und im Webradio informieren wir Euch über das Wichtigste aus Köln und der Welt. Rund um die Uhr gibt es dazu den...

Visit radio-koeln.de

Key Findings

We analyzed Radio-koeln.de page load time and found that the first response time was 302 ms and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

radio-koeln.de performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value30.9 s

0/100

25%

SI (Speed Index)

Value16.7 s

0/100

10%

TBT (Total Blocking Time)

Value1,250 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0.507

16/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

Network Requests Diagram

radio-koeln.de

302 ms

www.radiokoeln.de

968 ms

radios_1412121550.css

488 ms

css3.css

220 ms

jquery.fancybox.css

217 ms

Our browser made a total of 262 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Radio-koeln.de, 52% (137 requests) were made to Radiokoeln.de and 11% (28 requests) were made to Cdn.flashtalking.com. The less responsive or slowest element that took the longest time to load (968 ms) relates to the external source Radiokoeln.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 759.3 kB (45%)

Content Size

1.7 MB

After Optimization

933.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Radio-koeln.de main page is 1.7 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. 60% of websites need less resources to load. Images take 689.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 147.0 kB

  • Original 192.2 kB
  • After minification 185.3 kB
  • After compression 45.2 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 147.0 kB or 76% of the original size.

Image Optimization

-7%

Potential reduce by 46.3 kB

  • Original 689.8 kB
  • After minification 643.5 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. Radio Koeln images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 459.7 kB

  • Original 689.5 kB
  • After minification 618.7 kB
  • After compression 229.8 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 459.7 kB or 67% of the original size.

CSS Optimization

-88%

Potential reduce by 106.3 kB

  • Original 120.9 kB
  • After minification 97.7 kB
  • After compression 14.6 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. Radio-koeln.de needs all CSS files to be minified and compressed as it can save up to 106.3 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 134 (56%)

Requests Now

238

After Optimization

104

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 238 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radio Koeln. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 47 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

radio-koeln.de

radio-koeln.de

302 ms

www.radiokoeln.de

www.radiokoeln.de

968 ms

radios_1412121550.css

radios_1412121550.css

488 ms

css3.css

css3.css

220 ms

jquery.fancybox.css

jquery.fancybox.css

217 ms

kalender.css

kalender.css

217 ms

jquery.js

jquery.js

498 ms

jquery.tools.min.js

jquery.tools.min.js

702 ms

filo_style.css

filo_style.css

322 ms

filo.js

filo.js

408 ms

jquery_cookie.js

jquery_cookie.js

413 ms

move_box.js

move_box.js

414 ms

albumbar.js

albumbar.js

506 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

511 ms

jquery.socialshareprivacy2.js

jquery.socialshareprivacy2.js

608 ms

expansion_button.js

expansion_button.js

581 ms

iam.js

iam.js

505 ms

swfobject_2_2.js

swfobject_2_2.js

583 ms

omsv_container_151.js

omsv_container_151.js

451 ms

slider.js

slider.js

287 ms

playlist3.js

playlist3.js

294 ms

send_article2.js

send_article2.js

362 ms

jquery.mousewheel-3.0.4.pack.js

jquery.mousewheel-3.0.4.pack.js

365 ms

analytics.js

analytics.js

5 ms

gpt.js

gpt.js

12 ms

collect

collect

28 ms

pubads_impl_82.js

pubads_impl_82.js

7 ms

container.html

container.html

7 ms

rc

rc

221 ms

26865,26867,26869,26871

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106 ms

rta.js

rta.js

30 ms

collect

collect

57 ms

default.js

default.js

167 ms

adex.js

adex.js

254 ms

ci

ci

209 ms

p.min.js

p.min.js

33 ms

bg_gradient.png

bg_gradient.png

98 ms

urn-newsml-dpa-com-20090101-160320-99-287006_medium_4_3.jpg

urn-newsml-dpa-com-20090101-160320-99-287006_medium_4_3.jpg

387 ms

urn-newsml-dpa-com-20090101-160320-99-287890_medium_4_3.jpg

urn-newsml-dpa-com-20090101-160320-99-287890_medium_4_3.jpg

387 ms

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urn-newsml-dpa-com-20090101-160320-99-287065_medium_4_3.jpg

387 ms

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urn-newsml-dpa-com-20090101-160320-99-287119_medium_4_3.jpg

487 ms

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580 ms

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591 ms

bg.jpg

bg.jpg

102 ms

1458466202

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103 ms

fktmenu_search_lupe.png

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98 ms

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100 ms

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198 ms

transparent.gif

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kvb.gif

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202 ms

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202 ms

hp_herz.gif

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600 ms

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665 ms

tx.io

tx.io

291 ms

data

data

345 ms

ads

ads

278 ms

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597 ms

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602 ms

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analytic.js

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86 ms

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1.gif

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tx.io

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97 ms

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238 ms

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6 ms

2.gif

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180 ms

adex.js

adex.js

169 ms

adrtxtag.min.js

adrtxtag.min.js

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cinedom.gif

cinedom.gif

586 ms

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22 ms

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ticketshop.gif

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599 ms

1.gif

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91 ms

analytic.js

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90 ms

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a-ssl.ligatus.com

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44 ms

koelner_haie.gif

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582 ms

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585 ms

bg_nav.png

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583 ms

logo.png

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581 ms

bullet_menu.png

bullet_menu.png

595 ms

fktmenu_search.png

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651 ms

d2.ligatus.com

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655 ms

viewtracker-min.js

viewtracker-min.js

27 ms

pixel

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16 ms

cm.gif

cm.gif

87 ms

2.gif

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fktmenu_icon.png

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599 ms

fktmenu_center.png

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583 ms

fktmenu_left.png

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585 ms

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583 ms

koeln_christian_vom_hofe_und_vanessa_nolte.png

koeln_christian_vom_hofe_und_vanessa_nolte.png

612 ms

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koeln_christian_vom_hofe_und_vanessa_nolte.gif

649 ms

2.gif

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85 ms

bg_content.png

bg_content.png

596 ms

bg_fader_header_left.png

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585 ms

text.png

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582 ms

album.png

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605 ms

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649 ms

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88 ms

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581 ms

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581 ms

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605 ms

loupe.png

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648 ms

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hr_side.png

594 ms

bg_button_left.gif

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583 ms

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583 ms

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608 ms

hr_header_hp.png

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662 ms

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597 ms

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581 ms

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581 ms

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580 ms

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618 ms

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580 ms

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10 ms

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Ligatus-Logo.gif

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35 ms

pixel

pixel

39 ms

mtrcs_278674.js

mtrcs_278674.js

293 ms

aktionen_kuenstler_bg.png

aktionen_kuenstler_bg.png

462 ms

bg_kalender.png

bg_kalender.png

484 ms

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543 ms

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551 ms

count.js

count.js

25 ms

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2.gif

2.gif

91 ms

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mtrcs_278674.js

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9 ms

leader.html

leader.html

20 ms

tag.tr

tag.tr

545 ms

ftpagefold_v4.4.1.js

ftpagefold_v4.4.1.js

7 ms

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206 ms

ft.stat

ft.stat

45 ms

style.css

style.css

13 ms

html5API.js

html5API.js

16 ms

TweenLite.js

TweenLite.js

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EasePack.js

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CSSPlugin.js

CSSPlugin.js

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leaderScript.js

leaderScript.js

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bkg.jpg

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tag.tr

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style.css

style.css

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TweenLite.js

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EasePack.js

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CSSPlugin.js

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skyScript.js

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Accessibility Review

radio-koeln.de accessibility score

87

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

Image elements do not have [alt] attributes

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

radio-koeln.de 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

High

Missing source maps for large first-party JavaScript

SEO Factors

radio-koeln.de SEO score

85

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

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

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

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 Radio-koeln.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 Radio-koeln.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

radio-koeln.de

Open Graph description is not detected on the main page of Radio Koeln. 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: