Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

callavista.de

Callavista - Einfach, flexibel und guenstig mit dem eigenen Handy, Festnetz oder via Internet telefonieren.

Page Load Speed

2 sec in total

First Response

563 ms

Resources Loaded

1.3 sec

Page Rendered

131 ms

callavista.de screenshot

About Website

Click here to check amazing Callavista content. Otherwise, check out these important facts you probably never knew about callavista.de

Einfach, flexibel und billiger telefonieren, ab 1 Cent/Min, vom eigenen Handy, Festnetz oder Internet. Kostenlos Videophonieren mit dem Callavista Phone.

Visit callavista.de

Key Findings

We analyzed Callavista.de page load time and found that the first response time was 563 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

callavista.de performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

callavista.de

563 ms

main.css

205 ms

jquery-1.3.2.js

496 ms

jquery.newsticker.js

203 ms

jcarousellite_1.0.1.js

204 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 58% of them (21 requests) were addressed to the original Callavista.de, 19% (7 requests) were made to Translate.googleapis.com and 11% (4 requests) were made to Gstatic.com. The less responsive or slowest element that took the longest time to load (563 ms) belongs to the original domain Callavista.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 143.9 kB (25%)

Content Size

568.0 kB

After Optimization

424.2 kB

In fact, the total size of Callavista.de main page is 568.0 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. 35% of websites need less resources to load. Javascripts take 317.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 27.2 kB

  • Original 34.4 kB
  • After minification 31.7 kB
  • After compression 7.2 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 27.2 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 158 B

  • Original 202.5 kB
  • After minification 202.3 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. Callavista images are well optimized though.

JavaScript Optimization

-34%

Potential reduce by 108.2 kB

  • Original 317.2 kB
  • After minification 268.3 kB
  • After compression 209.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 108.2 kB or 34% of the original size.

CSS Optimization

-59%

Potential reduce by 8.3 kB

  • Original 14.0 kB
  • After minification 12.1 kB
  • After compression 5.7 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. Callavista.de needs all CSS files to be minified and compressed as it can save up to 8.3 kB or 59% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (57%)

Requests Now

35

After Optimization

15

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Callavista. 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 as a result speed up the page load time.

Accessibility Review

callavista.de accessibility score

80

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

callavista.de best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

callavista.de SEO score

67

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Callavista.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Callavista.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 Callavista. 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: