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Report Summary

About Website

Welcome to siv.isifedu.com homepage info - get ready to check Siv Isifedu best content for Russia right away, or after learning these important things about siv.isifedu.com

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name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

siv.isifedu.com

213 ms

ww25.siv.isifedu.com

78 ms

byZXaUQGl.js

3 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that 33% of them (1 request) were addressed to the original Siv.isifedu.com, 67% (2 requests) were made to Ww25.siv.isifedu.com. The less responsive or slowest element that took the longest time to load (213 ms) belongs to the original domain Siv.isifedu.com.

Content Size

489.4 kB

After Optimization

160.1 kB

In fact, the total size of Siv.isifedu.com main page is 489.4 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. Only 5% of websites need less resources to load. Javascripts take 288.8 kB which makes up the majority of the site volume.

HTML Optimization

-29%

Potential reduce by 346 B

Original 1.2 kB
After minification 1.2 kB
After compression 837 B

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 346 B or 29% of the original size.

Image Optimization

-3%

Potential reduce by 2.2 kB

Original 71.5 kB
After minification 69.3 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. Siv Isifedu images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 213.7 kB

Original 288.8 kB
After minification 225.3 kB
After compression 75.1 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 213.7 kB or 74% of the original size.

CSS Optimization

-88%

Potential reduce by 113.1 kB

Original 127.9 kB
After minification 97.0 kB
After compression 14.8 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. Siv.isifedu.com needs all CSS files to be minified and compressed as it can save up to 113.1 kB or 88% of the original size.

Requests Now

After Optimization

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Siv Isifedu. According to our analytics all requests are already optimized.

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

<frame> or <iframe> elements do not have a title

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Page is blocked from indexing

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 doesn't use legible font sizes

Language and Encoding

Language Detected

N/A
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Siv.isifedu.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Siv.isifedu.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

siv.isifedu.com

Open Graph description is not detected on the main page of Siv Isifedu. 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: