Tools & Wizards About Us

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

asergeev.com

Sergeev's Home Page

Page Load Speed

340 ms in total

First Response

56 ms

Resources Loaded

205 ms

Page Rendered

79 ms

About Website

Visit asergeev.com now to see the best up-to-date A Sergeev content for United States and also check out these interesting facts you probably never knew about asergeev.com

Developing quantum-mechanical perturbation theory for atomic and molecular problems. Many related documents, articles and pictures are available.

Visit asergeev.com

Key Findings

We analyzed Asergeev.com page load time and found that the first response time was 56 ms and then it took 284 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

asergeev.com performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

82/100

25%

SI (Speed Index)

Value2.3 s

98/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

Network Requests Diagram

asergeev.com

56 ms

asergeev.com

28 ms

www.asergeev.com

64 ms

ga.js

20 ms

email1.gif

17 ms

Our browser made a total of 8 requests to load all elements on the main page. We found that 75% of them (6 requests) were addressed to the original Asergeev.com, 25% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (64 ms) belongs to the original domain Asergeev.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.2 kB (24%)

Content Size

26.2 kB

After Optimization

20.0 kB

  • HTML
  • JavaScript

In fact, the total size of Asergeev.com main page is 26.2 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 17.2 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 6.1 kB

  • Original 9.0 kB
  • After minification 8.9 kB
  • After compression 2.9 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 6.1 kB or 68% of the original size.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • JavaScript

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of A Sergeev. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

asergeev.com accessibility score

68

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

Form elements do not have associated labels

Best Practices

asergeev.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

asergeev.com SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Asergeev.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Asergeev.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of A Sergeev. 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: