Tools & Wizards About Us
railstutorial.ru screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

railstutorial.ru

Перевод Ruby on Rails Tutorial: Изучение Rails на Примерах | Ruby on Rails 3 Tutorial book and screencasts | by Michael Hartl

Page Load Speed

6.6 sec in total

First Response

169 ms

Resources Loaded

2.2 sec

Page Rendered

4.2 sec

railstutorial.ru screenshot

About Website

Click here to check amazing Rails Tutorial content for Russia. Otherwise, check out these important facts you probably never knew about railstutorial.ru

Перевод Ruby on Rails Tutorial: Изучение Rails на Примерах by Michael Hartl

Visit railstutorial.ru

Key Findings

We analyzed Railstutorial.ru page load time and found that the first response time was 169 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

railstutorial.ru performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

94/100

25%

SI (Speed Index)

Value3.3 s

90/100

10%

TBT (Total Blocking Time)

Value740 ms

40/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

railstutorial.ru

169 ms

railstutorial.ru

799 ms

polytexnic.css

26 ms

pygments.css

25 ms

screen.css

31 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 81% of them (35 requests) were addressed to the original Railstutorial.ru, 5% (2 requests) were made to Media.reformal.ru and 2% (1 request) were made to Cdn.admitad-connect.com. The less responsive or slowest element that took the longest time to load (906 ms) belongs to the original domain Railstutorial.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 404.3 kB (25%)

Content Size

1.6 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Railstutorial.ru main page is 1.6 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. 30% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 193.2 kB

  • Original 252.3 kB
  • After minification 251.4 kB
  • After compression 59.1 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 193.2 kB or 77% of the original size.

Image Optimization

-16%

Potential reduce by 210.3 kB

  • Original 1.3 MB
  • After minification 1.1 MB

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. Obviously, Rails Tutorial needs image optimization as it can save up to 210.3 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 17 B

  • Original 655 B
  • After minification 655 B
  • After compression 638 B

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.

CSS Optimization

-11%

Potential reduce by 856 B

  • Original 8.1 kB
  • After minification 8.1 kB
  • After compression 7.2 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. Railstutorial.ru needs all CSS files to be minified and compressed as it can save up to 856 B or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (41%)

Requests Now

41

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rails Tutorial. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

railstutorial.ru

railstutorial.ru

169 ms

railstutorial.ru

railstutorial.ru

799 ms

polytexnic.css

polytexnic.css

26 ms

pygments.css

pygments.css

25 ms

screen.css

screen.css

31 ms

custom.css

custom.css

36 ms

jquery-1.6.2.min.js

jquery-1.6.2.min.js

34 ms

show_origin.js

show_origin.js

57 ms

railstutorial.css

railstutorial.css

56 ms

background.png

background.png

15 ms

book_header.png

book_header.png

12 ms

logo.png

logo.png

12 ms

title.png

title.png

448 ms

author.png

author.png

15 ms

book_menu.png

book_menu.png

19 ms

sb_button_up.png

sb_button_up.png

24 ms

sb_button_prev.png

sb_button_prev.png

22 ms

sb_button_next.png

sb_button_next.png

25 ms

sb_button_buy_screencasts_red.png

sb_button_buy_screencasts_red.png

40 ms

book_top.png

book_top.png

32 ms

book_bg.png

book_bg.png

43 ms

editor_shell.png

editor_shell.png

18 ms

directory_structure_rails_4_0.png

directory_structure_rails_4_0.png

15 ms

240x400wm.343f.jpg

240x400wm.343f.jpg

98 ms

riding_rails_4_0.png

riding_rails_4_0.png

19 ms

riding_rails_environment_4_0.png

riding_rails_environment_4_0.png

897 ms

mvc_schematic.png

mvc_schematic.png

599 ms

create_first_repository_4_0.png

create_first_repository_4_0.png

906 ms

github_repository_page_4_0.png

github_repository_page_4_0.png

19 ms

rails_readme_4_0.png

rails_readme_4_0.png

714 ms

orphus.js

orphus.js

465 ms

new_readme_4_0.png

new_readme_4_0.png

213 ms

heroku_app_4_0.png

heroku_app_4_0.png

228 ms

heroku_info_4_0.png

heroku_info_4_0.png

241 ms

book_bottom.png

book_bottom.png

253 ms

email-decode.min.js

email-decode.min.js

247 ms

reformal.js

reformal.js

422 ms

tag.js

tag.js

54 ms

advert.gif

advert.gif

582 ms

tab.png

tab.png

489 ms

st.php

st.php

358 ms

36662%7CaHR0cHM6Ly9yYWlsc3R1dG9yaWFsLnJ1Lw==%7C%7C53896

36662%7CaHR0cHM6Ly9yYWlsc3R1dG9yaWFsLnJ1Lw==%7C%7C53896

357 ms

gl.png

gl.png

88 ms

Accessibility Review

railstutorial.ru accessibility score

75

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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

railstutorial.ru best practices score

67

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

SEO Factors

railstutorial.ru SEO score

86

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

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Railstutorial.ru 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 Railstutorial.ru 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

railstutorial.ru

Open Graph data is detected on the main page of Rails Tutorial. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: