Access knigi-janzen.de. Knigi-janzen.de - Русские книги, CD, DVD в Германии и по всей Европе.

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value990 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.5 s

24/100

10%

knigi-janzen.de

398 ms

www.knigi-janzen.de

1093 ms

style.css

255 ms

screenkeys.css

257 ms

jquery-1.9.1.min.js

1142 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 88% of them (96 requests) were addressed to the original Knigi-janzen.de, 6% (7 requests) were made to Apis.google.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Knigi-janzen.de.

Content Size

716.2 kB

After Optimization

418.3 kB

In fact, the total size of Knigi-janzen.de main page is 716.2 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. Images take 376.0 kB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 186.0 kB

Original 200.1 kB
After minification 185.2 kB
After compression 14.1 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 186.0 kB or 93% of the original size.

Image Optimization

-9%

Potential reduce by 32.6 kB

Original 376.0 kB
After minification 343.4 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. Knigi Janzen images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 76.5 kB

Original 136.4 kB
After minification 133.6 kB
After compression 59.9 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 76.5 kB or 56% of the original size.

CSS Optimization

-73%

Potential reduce by 2.7 kB

Original 3.7 kB
After minification 3.1 kB
After compression 1.0 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. Knigi-janzen.de needs all CSS files to be minified and compressed as it can save up to 2.7 kB or 73% of the original size.

Requests Now

106

After Optimization

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Knigi Janzen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

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

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

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

RU
Language Claimed

RU
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Knigi-janzen.de can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Knigi-janzen.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

knigi-janzen.de

Open Graph description is not detected on the main page of Knigi Janzen. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Knigi-janzen.de - Русские книги, CD, DVD в Германии и по всей Европе.

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

knigi-janzen.de

www.knigi-janzen.de

style.css

screenkeys.css

jquery-1.9.1.min.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

knigi-janzen.de

www.knigi-janzen.de

style.css

screenkeys.css

jquery-1.9.1.min.js

screenkeys-1.0.1.js

screenkeysloc_ru_RU.js

logo.png

jan_trans.jpg

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