Access telefonbuch.de. Adressauskunft für Deutschland: Ihr Telefon- & Adressbuch seit 1881

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

telefonbuch.de

327 ms

www.dastelefonbuch.de

255 ms

application_desktop_start-4980c18abd95f0e3cf33bdb4839bfb69.css

28 ms

cms_flexbox.css

529 ms

offer.css

665 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Telefonbuch.de, 33% (18 requests) were made to Medien.dastelefonbuch.de and 31% (17 requests) were made to Image.dastelefonbuch.de. The less responsive or slowest element that took the longest time to load (665 ms) relates to the external source Medien.dastelefonbuch.de.

Content Size

772.3 kB

After Optimization

609.9 kB

In fact, the total size of Telefonbuch.de main page is 772.3 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. 40% of websites need less resources to load. Images take 313.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 156.5 kB

Original 200.3 kB
After minification 179.7 kB
After compression 43.8 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 156.5 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 43 B

Original 313.7 kB
After minification 313.6 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. Telefon Buch images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 1.8 kB

Original 201.2 kB
After minification 201.2 kB
After compression 199.4 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

-7%

Potential reduce by 4.1 kB

Original 57.1 kB
After minification 57.1 kB
After compression 53.1 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. Telefonbuch.de has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Telefon Buch. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document doesn't use 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 Telefonbuch.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 Telefonbuch.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

telefonbuch.de

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Adressauskunft für Deutschland: Ihr Telefon- & Adressbuch seit 1881

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

telefonbuch.de

www.dastelefonbuch.de

application_desktop_start-4980c18abd95f0e3cf33bdb4839bfb69.css

cms_flexbox.css

offer.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

telefonbuch.de

www.dastelefonbuch.de

application_desktop_start-4980c18abd95f0e3cf33bdb4839bfb69.css

cms_flexbox.css

offer.css

tb_ladeanimation-f892ff65d22da0685ac71299c5331b52.js

42-f540009893b5e6a80d384697b17e40f7.js

localStorageHandler-73b27ca4c3a58f97e860881afa7586b7.js

loader.js

wa.js

style-2e53b4f9d37c6352d776d9b43e83e4a0.css

cmp.min.css

bundle_desktop_start_below_the_fold_new-e3ddb2edf1c2377f684e4d8ba493a20c.js

bundle.js

login-fa15f99cced5791eb1331b694a725ea6.svg

startstage_2.jpg

tsg_icon_newsletter_new-68e5d4b73325b3f56c21cf0edd01d51b.png

top-berlin.jpg

top-bochum.jpg

top-bremen.jpg

top-dortmund.jpg

top-dresden.jpg

top-duesseldorf.jpg

top-duisburg.jpg

top-essen.jpg

top-frankfurt-am-main.jpg

top-hamburg.jpg

top-hannover.jpg

top-koeln.jpg

top-leipzig.jpg

top-muenchen.jpg

top-nuernberg.jpg

top-stuttgart.jpg

TB_Start_ts1.jpg.webp

TB_Start_ts2.jpg.webp

TB_Start_Privateintrag.jpg.webp

benzin.jpg.webp

TB_Start_Firmeneintrag.jpg.webp

TB_Start_ts3.jpg.webp

TB_Start_ts4.jpg.webp

huawei.jpg.webp

TB_teaser_Apple.jpg.webp

TB_teaser_Google.jpg.webp