6 sec in total
387 ms
4.7 sec
910 ms
Welcome to portal.o2online.de homepage info - get ready to check Portal O2 Online best content for Germany right away, or after learning these important things about portal.o2online.de
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Visit portal.o2online.deWe analyzed Portal.o2online.de page load time and found that the first response time was 387 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
portal.o2online.de performance score
name
value
score
weighting
Value3.8 s
26/100
10%
Value15.9 s
0/100
25%
Value11.0 s
6/100
10%
Value2,660 ms
4/100
30%
Value0.091
92/100
15%
Value15.3 s
7/100
10%
387 ms
871 ms
994 ms
319 ms
198 ms
Our browser made a total of 71 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Portal.o2online.de, 69% (49 requests) were made to Static2.o9.de and 10% (7 requests) were made to Static.o9.de. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Library.telefonica.de.
Page size can be reduced by 157.8 kB (42%)
379.7 kB
221.9 kB
In fact, the total size of Portal.o2online.de main page is 379.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. HTML takes 183.6 kB which makes up the majority of the site volume.
Potential reduce by 150.3 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 150.3 kB or 82% of the original size.
Potential reduce by 19 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. Portal O2 Online images are well optimized though.
Potential reduce by 500 B
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.
Potential reduce by 7.0 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. Portal.o2online.de has all CSS files already compressed.
Number of requests can be reduced by 12 (18%)
66
54
The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Portal 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 13 to 1 for JavaScripts and as a result speed up the page load time.
portal.o2online.de
387 ms
www.o2online.de
871 ms
loader.js
994 ms
adspace-trbo.js
319 ms
trbo_12897_06a204cf5064fdf6e30c998bdf5f0f6b.js
198 ms
main.css
382 ms
lottie.js
308 ms
bundle.css
942 ms
vendors.js
1458 ms
bundle.js
1458 ms
routingwidget-js
282 ms
vertrag-kuendigen-js-code
279 ms
jquery-2.1.1.min.js
294 ms
webapp.js
674 ms
app.min.js
689 ms
gtm.js
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portal.o2online.de accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
portal.o2online.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
portal.o2online.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Portal.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 Portal.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.
portal.o2online.de
Open Graph data is detected on the main page of Portal O2 Online. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: