Tools & Wizards About Us

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

nummer-index.de

Nummer-Index.de | Anrufer Rückverfolgung durch Telefonnummern Bewertungen

Page Load Speed

4.9 sec in total

First Response

363 ms

Resources Loaded

4.4 sec

Page Rendered

129 ms

About Website

Visit nummer-index.de now to see the best up-to-date Nummer Index content for Germany and also check out these interesting facts you probably never knew about nummer-index.de

Mit dem Telefonbuch von Nummer-Index Anrufer anhand der Telefonnummer rückverfolgen. Dank Inverssuche für Rufnummern aus Deutschland immer wissen, wer gerade angerufen hat.

Visit nummer-index.de

Key Findings

We analyzed Nummer-index.de page load time and found that the first response time was 363 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

nummer-index.de performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

0/100

25%

SI (Speed Index)

Value8.8 s

15/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

nummer-index.de

363 ms

www.nummer-index.de

3502 ms

analytics.js

28 ms

tracker.js

49 ms

bootstrap.min.css

69 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 25% of them (4 requests) were addressed to the original Nummer-index.de, 25% (4 requests) were made to Maxcdn.bootstrapcdn.com and 13% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.5 sec) belongs to the original domain Nummer-index.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 46.2 kB (30%)

Content Size

154.3 kB

After Optimization

108.1 kB

  • HTML
  • JavaScript

In fact, the total size of Nummer-index.de main page is 154.3 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. 25% of websites need less resources to load. Javascripts take 95.1 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 46.1 kB

  • Original 59.2 kB
  • After minification 53.0 kB
  • After compression 13.1 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 46.1 kB or 78% of the original size.

JavaScript Optimization

-0%

Potential reduce by 86 B

  • Original 95.1 kB
  • After minification 95.1 kB
  • After compression 95.0 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 5 (45%)

Requests Now

11

After Optimization

6

  • AJAX
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nummer Index. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nummer-index.de accessibility score

84

Accessibility Issues

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

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

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

nummer-index.de best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the geolocation permission on page load

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

Page has valid source maps

SEO Factors

nummer-index.de SEO score

93

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

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nummer-index.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it does not match the claimed English language. Our system also found out that Nummer-index.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

Open Graph description is not detected on the main page of Nummer Index. 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: