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daf-rs.com screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

daf-rs.com

德语培训_南京|北京德语培训班_北京莱茵春天德语学校/学习班/课程/学习培训班

Page Load Speed

27.1 sec in total

First Response

3.8 sec

Resources Loaded

22.7 sec

Page Rendered

608 ms

daf-rs.com screenshot

About Website

Visit daf-rs.com now to see the best up-to-date Daf Rs content for Germany and also check out these interesting facts you probably never knew about daf-rs.com

北京莱茵春天德语学校，全国顶级德语培训机构，17年德语培训经验（德语培训,德语培训班,德语学校,北京德语培训/德语学习,南京莱茵春天德语培训,北京莱茵春天德语学校,南京德语学习班,南京德语学习培训,南京莱茵春天），莱茵春天德福培训人数以及德福成绩更是超过其他强劲竞争对手傲居全国首位!莱茵春天德语是戴姆勒,宝马,大众,蒂森克虏伯,Siemens等著名企业员工德语培训指定机构。报名咨询电话：010-5...

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Key Findings

We analyzed Daf-rs.com page load time and found that the first response time was 3.8 sec and then it took 23.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

daf-rs.com performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value15.3 s

1/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value11.7 s

17/100

10%

Network Requests Diagram

daf-rs.com

3810 ms

public.css

621 ms

style.css

1501 ms

jquery.js

4107 ms

public.js

947 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that all of those requests were addressed to Daf-rs.com and no external sources were called. The less responsive or slowest element that took the longest time to load (14.7 sec) belongs to the original domain Daf-rs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 112.1 kB (67%)

Content Size

167.0 kB

After Optimization

54.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Daf-rs.com main page is 167.0 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 92.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 28.3 kB

  • Original 37.9 kB
  • After minification 36.3 kB
  • After compression 9.5 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 28.3 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 16.3 kB
  • After minification 16.3 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. Daf Rs images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 67.6 kB

  • Original 92.9 kB
  • After minification 90.9 kB
  • After compression 25.3 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 67.6 kB or 73% of the original size.

CSS Optimization

-81%

Potential reduce by 16.2 kB

  • Original 19.9 kB
  • After minification 16.7 kB
  • After compression 3.8 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. Daf-rs.com needs all CSS files to be minified and compressed as it can save up to 16.2 kB or 81% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

21

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Daf Rs. According to our analytics all requests are already optimized.

Network Requests Diagram

daf-rs.com

daf-rs.com

3810 ms

public.css

public.css

621 ms

style.css

style.css

1501 ms

jquery.js

jquery.js

4107 ms

public.js

public.js

947 ms

20151191417439601521.jpg

20151191417439601521.jpg

4423 ms

bg5.png

bg5.png

1393 ms

icon1.png

icon1.png

1052 ms

tit1.png

tit1.png

14683 ms

bgjt.png

bgjt.png

742 ms

2015119141861446062.jpg

2015119141861446062.jpg

6050 ms

icon2.png

icon2.png

1422 ms

tit2.png

tit2.png

3792 ms

20151191418156187996.jpg

20151191418156187996.jpg

11907 ms

icon3.png

icon3.png

5666 ms

tit3.png

tit3.png

4709 ms

20151191418245886456.jpg

20151191418245886456.jpg

8619 ms

icon4.png

icon4.png

8289 ms

tit4.png

tit4.png

6438 ms

item5.png

item5.png

7676 ms

logo2.png

logo2.png

9438 ms

sjr.png

sjr.png

9125 ms

Accessibility Review

daf-rs.com accessibility score

53

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.

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

Form elements do not have associated labels

High

Links do not have a discernible name

High

<object> elements do not have alternate text

Best Practices

daf-rs.com best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

daf-rs.com SEO score

54

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

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Daf-rs.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Daf-rs.com 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

daf-rs.com

Open Graph description is not detected on the main page of Daf Rs. 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: