Access blue-deals.de. o2 | Mobilfunkanbieter für Handytarif, Smartphone & Internet

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value13.5 s

2/100

10%

TBT (Total Blocking Time)

Value6,160 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.056

98/100

15%

TTI (Time to Interactive)

Value15.3 s

7/100

10%

blue-deals.de

391 ms

www.o2online.de

99 ms

www.o2online.de

841 ms

loader.js

26 ms

install.js

197 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Blue-deals.de, 58% (49 requests) were made to Static2.o9.de and 21% (18 requests) were made to Library.telefonica.de. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Static2.o9.de.

Content Size

576.6 kB

After Optimization

393.1 kB

In fact, the total size of Blue-deals.de main page is 576.6 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. 60% of websites need less resources to load. Javascripts take 364.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 182.4 kB

Original 211.2 kB
After minification 207.8 kB
After compression 28.8 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 182.4 kB or 86% of the original size.

Image Optimization

-7%

Potential reduce by 35 B

Original 522 B
After minification 487 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. Blue Deals images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.0 kB

Original 364.8 kB
After minification 364.8 kB
After compression 363.8 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. This website has mostly compressed JavaScripts.

Requests Now

After Optimization

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blue Deals. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-*] attributes do not match their roles

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 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 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

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

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 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 Blue-deals.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 Blue-deals.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

blue-deals.de

Open Graph data is detected on the main page of Blue Deals. 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

o2 | Mobilfunkanbieter für Handytarif, Smartphone & Internet

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

blue-deals.de

www.o2online.de

www.o2online.de

loader.js

install.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

blue-deals.de

www.o2online.de

www.o2online.de

loader.js

install.js

bundle.css

sha256.min.js

adspace-trbo.js

trbo_12897_06a204cf5064fdf6e30c998bdf5f0f6b.js

alert-tracking-js-code

bundle.js

bundle.js

bundle.js

bundle.js

bundle.js

bundle.js

bundle_legacy.js

product-code-teaser-standard-occl-css

bundle.js

bundle.js

bundle.js

bundle.js

vertrag-kuendigen-js-code

bundle.js

bundle.js

bundle.js

languages.json

de.json

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