Report Summary

  • 5

    Performance

    Renders faster than
    21% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 77

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

m.o2online.de

o2 | Mobilfunkanbieter für Handytarif, Smartphone & Internet

Page Load Speed

28.2 sec in total

First Response

414 ms

Resources Loaded

26.1 sec

Page Rendered

1.8 sec

m.o2online.de screenshot

About Website

Welcome to m.o2online.de homepage info - get ready to check M O2 Online best content for Germany right away, or after learning these important things about m.o2online.de

Dein Mobilfunkanbieter für ✓ günstige Handytarife ✓ Top-Smartphones ✓ Internet mobil & zu Hause ᐅ o2 Angebote entdecken.

Visit m.o2online.de

Key Findings

We analyzed M.o2online.de page load time and found that the first response time was 414 ms and then it took 27.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

m.o2online.de performance score

5

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

1/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value2,470 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.954

3/100

15%

TTI (Time to Interactive)

Value15.3 s

7/100

10%

Network Requests Diagram

m.o2online.de

414 ms

m.o2online.de

5755 ms

index.css

431 ms

g.gif

104 ms

o2-logo.gif

205 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 15% of them (10 requests) were addressed to the original M.o2online.de, 21% (14 requests) were made to Pixel.mathtag.com and 7% (5 requests) were made to Static2.o2.de. The less responsive or slowest element that took the longest time to load (19.6 sec) relates to the external source A.nexeps.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 104.8 kB (49%)

Content Size

216.0 kB

After Optimization

111.2 kB

In fact, the total size of M.o2online.de main page is 216.0 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. 15% of websites need less resources to load. Javascripts take 188.2 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 21.1 kB

  • Original 27.1 kB
  • After minification 26.4 kB
  • After compression 5.9 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 21.1 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 4 B

  • Original 730 B
  • After minification 726 B

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. M O2 Online images are well optimized though.

JavaScript Optimization

-44%

Potential reduce by 83.7 kB

  • Original 188.2 kB
  • After minification 188.0 kB
  • After compression 104.5 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 83.7 kB or 44% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (79%)

Requests Now

62

After Optimization

13

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of M O2 Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

m.o2online.de accessibility score

89

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

Links do not have a discernible name

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

m.o2online.de best practices score

77

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

High

Registers an unload listener

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

m.o2online.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

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise M.o2online.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 M.o2online.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 data is detected on the main page of M O2 Online. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: