Tools & Wizards About Us

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 48

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

doclecture.net

Lectures for learning

Page Load Speed

25 sec in total

First Response

409 ms

Resources Loaded

24.6 sec

Page Rendered

88 ms

About Website

Visit doclecture.net now to see the best up-to-date Doclecture content for Russia and also check out these interesting facts you probably never knew about doclecture.net

Lectures for learning — the portal lecture materials of different items needed for each student

Visit doclecture.net

Key Findings

We analyzed Doclecture.net page load time and found that the first response time was 409 ms and then it took 24.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

doclecture.net performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

82/100

25%

SI (Speed Index)

Value19.2 s

0/100

10%

TBT (Total Blocking Time)

Value5,380 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value37.5 s

0/100

10%

Network Requests Diagram

doclecture.net

409 ms

doclecture.net

506 ms

style.css

122 ms

cnt.share.js

689 ms

share.js

1050 ms

Our browser made a total of 196 requests to load all elements on the main page. We found that 4% of them (7 requests) were addressed to the original Doclecture.net, 18% (36 requests) were made to Ae-pic-a1.aliexpress-media.com and 15% (29 requests) were made to Ae01.alicdn.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Hotels.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 937.8 kB (57%)

Content Size

1.7 MB

After Optimization

718.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Doclecture.net main page is 1.7 MB. 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 a small number of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 16.2 kB

  • Original 21.6 kB
  • After minification 21.4 kB
  • After compression 5.5 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 16.2 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 504 B

  • Original 17.2 kB
  • After minification 16.7 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. Doclecture images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 617.8 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 633.1 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 617.8 kB or 49% of the original size.

CSS Optimization

-83%

Potential reduce by 303.3 kB

  • Original 366.7 kB
  • After minification 366.6 kB
  • After compression 63.4 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. Doclecture.net needs all CSS files to be minified and compressed as it can save up to 303.3 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (26%)

Requests Now

153

After Optimization

113

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 153 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doclecture. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

doclecture.net accessibility score

48

Accessibility Issues

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

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Best Practices

doclecture.net 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

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

doclecture.net 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

    EN

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Doclecture.net 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 Doclecture.net main page’s claimed encoding is windows-1251. 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 Doclecture. 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: