Tools & Wizards About Us
english15.com screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

english15.com

欧易中国（okx） - okx官网正版

Page Load Speed

2.3 sec in total

First Response

520 ms

Resources Loaded

1.6 sec

Page Rendered

199 ms

english15.com screenshot

About Website

Visit english15.com now to see the best up-to-date English 15 content for Ukraine and also check out these interesting facts you probably never knew about english15.com

Изучение английского языка онлайн на сайте English15. Подробное изложение грамматики, описание методик изучения, онлайн тесты, литература и учебные пособия, аудиокниги и фильмы на английском. Английск...

Visit english15.com

Key Findings

We analyzed English15.com page load time and found that the first response time was 520 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

english15.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value1,240 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

english15.com

520 ms

3367eff92dcb.css

150 ms

jquery.min.js

34 ms

op_vk.js

269 ms

jquery.cookie.js

277 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 86% of them (19 requests) were addressed to the original English15.com, 5% (1 request) were made to Ajax.googleapis.com and 5% (1 request) were made to Userapi.com. The less responsive or slowest element that took the longest time to load (821 ms) belongs to the original domain English15.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 86.4 kB (25%)

Content Size

345.5 kB

After Optimization

259.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of English15.com main page is 345.5 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. 20% of websites need less resources to load. Images take 211.8 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 6.1 kB

  • Original 8.8 kB
  • After minification 7.9 kB
  • After compression 2.8 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. This page needs HTML code to be minified as it can gain 962 B, which is 11% of the original size. 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 69% of the original size.

Image Optimization

-4%

Potential reduce by 7.8 kB

  • Original 211.8 kB
  • After minification 204.0 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. English 15 images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 61.0 kB

  • Original 110.5 kB
  • After minification 87.1 kB
  • After compression 49.5 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 61.0 kB or 55% of the original size.

CSS Optimization

-80%

Potential reduce by 11.5 kB

  • Original 14.5 kB
  • After minification 10.2 kB
  • After compression 2.9 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. English15.com needs all CSS files to be minified and compressed as it can save up to 11.5 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (19%)

Requests Now

21

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of English 15. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

english15.com

english15.com

520 ms

3367eff92dcb.css

3367eff92dcb.css

150 ms

jquery.min.js

jquery.min.js

34 ms

op_vk.js

op_vk.js

269 ms

jquery.cookie.js

jquery.cookie.js

277 ms

my.css

my.css

283 ms

openapi.js

openapi.js

387 ms

cloud.png

cloud.png

144 ms

logo_main.png

logo_main.png

142 ms

signup.png

signup.png

138 ms

3dots.png

3dots.png

147 ms

top_base_artistic.jpg

top_base_artistic.jpg

392 ms

people.jpg

people.jpg

821 ms

btn-signup.png

btn-signup.png

270 ms

peoples.png

peoples.png

416 ms

vk-like.jpg

vk-like.jpg

279 ms

0dcf7a01.jpg

0dcf7a01.jpg

280 ms

0818ccf3.jpg

0818ccf3.jpg

407 ms

2d1bafff.jpg

2d1bafff.jpg

443 ms

06920871.jpg

06920871.jpg

435 ms

logo443.gif

logo443.gif

523 ms

59272

59272

155 ms

Accessibility Review

english15.com accessibility score

56

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

Links do not have a discernible name

Best Practices

english15.com best practices score

58

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

english15.com SEO score

62

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

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise English15.com can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 English15.com 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

english15.com

Open Graph description is not detected on the main page of English 15. 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: