3.1 sec in total
216 ms
1.7 sec
1.3 sec
Click here to check amazing Rails Tutorial content for Japan. Otherwise, check out these important facts you probably never knew about railstutorial.jp
SNS開発やWebサイト制作が学べる大型チュートリアル。作りながら学ぶのが特徴で、電子書籍や解説動画、質問対応、社員研修、教材利用にも対応しています。
Visit railstutorial.jpWe analyzed Railstutorial.jp page load time and found that the first response time was 216 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
railstutorial.jp performance score
name
value
score
weighting
Value4.5 s
14/100
10%
Value6.0 s
13/100
25%
Value9.6 s
11/100
10%
Value3,240 ms
2/100
30%
Value0.013
100/100
15%
Value18.8 s
3/100
10%
216 ms
91 ms
106 ms
29 ms
134 ms
Our browser made a total of 73 requests to load all elements on the main page. We found that 37% of them (27 requests) were addressed to the original Railstutorial.jp, 16% (12 requests) were made to Public.slidesharecdn.com and 7% (5 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (545 ms) belongs to the original domain Railstutorial.jp.
Page size can be reduced by 436.6 kB (52%)
831.8 kB
395.2 kB
In fact, the total size of Railstutorial.jp main page is 831.8 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. 70% of websites need less resources to load. Javascripts take 348.7 kB which makes up the majority of the site volume.
Potential reduce by 87.1 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 87.1 kB or 79% of the original size.
Potential reduce by 25.9 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. Obviously, Rails Tutorial needs image optimization as it can save up to 25.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 211.9 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 211.9 kB or 61% of the original size.
Potential reduce by 111.7 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.jp needs all CSS files to be minified and compressed as it can save up to 111.7 kB or 76% of the original size.
Number of requests can be reduced by 35 (49%)
71
36
The browser has sent 71 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 19 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
railstutorial.jp
216 ms
pygments.css
91 ms
softcover.css
106 ms
custom.css
29 ms
screen.css
134 ms
MathJax.js
15 ms
bookmark_button.js
486 ms
analytics.js
66 ms
mixpanel-2.2.min.js
67 ms
TeX-AMS_HTML.js
50 ms
dTTiiBKIo80sNs
345 ms
sdk.js
304 ms
widgets.js
21 ms
background.png
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book_header.png
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logo.png
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title.png
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author.png
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book_menu.png
306 ms
sb_button_up.png
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sb_button_prev-ba223c8d9bceb768c3e503906bd5876e.png
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sb_button_next-2018f09b6d56ec04ec43bfb0cf53741a.png
304 ms
help-icon24x24.png
316 ms
email-icon24x24.png
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twitter-icon24x24.png
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github-icon24x24.png
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report_button.png
393 ms
railsguides.png
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railsseminar.jpg
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book_top.png
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book_bg.png
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yasslab_logo.png
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railscp_bronze_logo.png
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book_bottom.png
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button-only@2x.png
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collect
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button.831500944bc3eb7ea5276ccdc3f71d2e.js
126 ms
combined_jquery.js
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global.js
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combined_li_tracking.js
87 ms
font-awesome.css
86 ms
combined_presentation.css
126 ms
combined_player_presentation.js
135 ms
combined_old_embed.js
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xd_arbiter.php
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combined_base.js
131 ms
ga.js
122 ms
beacon.js
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rails-3-1-638.jpg
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lead-form
249 ms
1x1.gif
103 ms
logo_embed_100x20_v1.png
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fontawesome-webfont.woff
103 ms
icons.svg
101 ms
tweet_button.6a78875565a912489e9aef879c881358.ja.html
79 ms
print.css
89 ms
__utm.gif
107 ms
status
96 ms
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102 ms
reset.css
58 ms
entry-button.css
59 ms
bbtn-l_v3.png
11 ms
nr-885.min.js
31 ms
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jot
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like.php
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railstutorial.jp accessibility score
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
<frame> or <iframe> elements do not have a title
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
railstutorial.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
railstutorial.jp SEO score
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
Document uses legible font sizes
Tap targets are not sized appropriately
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Railstutorial.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Railstutorial.jp 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.
railstutorial.jp
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: