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railstutorial.com screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

railstutorial.com

Ruby on Rails Tutorial | Learn Enough to Be Dangerous

Page Load Speed

7.5 sec in total

First Response

231 ms

Resources Loaded

4.2 sec

Page Rendered

3 sec

railstutorial.com screenshot

About Website

Visit railstutorial.com now to see the best up-to-date Rails Tutorial content and also check out these interesting facts you probably never knew about railstutorial.com

Learn how to develop and deploy real, industrial-strength web applications with Ruby on Rails. This new 7th edition has been fully updated for Rails 7.Learn how to develop and deploy real, industrial-...

Visit railstutorial.com

Key Findings

We analyzed Railstutorial.com page load time and found that the first response time was 231 ms and then it took 7.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

railstutorial.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value14.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value26.1 s

0/100

25%

SI (Speed Index)

Value32.4 s

0/100

10%

TBT (Total Blocking Time)

Value12,610 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value58.6 s

0/100

10%

Network Requests Diagram

railstutorial.com

231 ms

www.railstutorial.org

1059 ms

nbl5sqs.js

144 ms

novo_le-d33e7afd19159aeabb1fdd24354c02f4283979a11fd8d7e3409d6c048ed9eaed.css

230 ms

checkout.js

82 ms

Our browser made a total of 131 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Railstutorial.com, 17% (22 requests) were made to Platform.twitter.com and 15% (20 requests) were made to Learnenough.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Softcover.s3.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 675.1 kB (15%)

Content Size

4.5 MB

After Optimization

3.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Railstutorial.com main page is 4.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 126.3 kB

  • Original 162.9 kB
  • After minification 161.5 kB
  • After compression 36.7 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 126.3 kB or 77% of the original size.

Image Optimization

-14%

Potential reduce by 214.2 kB

  • Original 1.5 MB
  • After minification 1.3 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 214.2 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-12%

Potential reduce by 334.6 kB

  • Original 2.7 MB
  • After minification 2.7 MB
  • After compression 2.4 MB

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 334.6 kB or 12% of the original size.

CSS Optimization

-0%

Potential reduce by 2 B

  • Original 104.8 kB
  • After minification 104.8 kB
  • After compression 104.8 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.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 45 (39%)

Requests Now

115

After Optimization

70

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 115 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 40 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

railstutorial.com

railstutorial.com

231 ms

www.railstutorial.org

www.railstutorial.org

1059 ms

nbl5sqs.js

nbl5sqs.js

144 ms

novo_le-d33e7afd19159aeabb1fdd24354c02f4283979a11fd8d7e3409d6c048ed9eaed.css

novo_le-d33e7afd19159aeabb1fdd24354c02f4283979a11fd8d7e3409d6c048ed9eaed.css

230 ms

checkout.js

checkout.js

82 ms

client.min.js

client.min.js

82 ms

paypal-checkout.min.js

paypal-checkout.min.js

81 ms

jquery-2.0.3.min.js

jquery-2.0.3.min.js

81 ms

jquery.formalize.min.js

jquery.formalize.min.js

72 ms

underscore-min.js

underscore-min.js

252 ms

92 ms

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105 ms

trackjs.js

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122 ms

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121 ms

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443 ms

js

js

102 ms

6713.js

6713.js

98 ms

api.js

api.js

99 ms

CKJS4.js

CKJS4.js

98 ms

loader.js

loader.js

20 ms

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871 ms

pptm.js

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388 ms

gtm.js

gtm.js

180 ms

gtm.js

gtm.js

447 ms

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939 ms

fbevents.js

fbevents.js

722 ms

cover-web.png

cover-web.png

1259 ms

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816 ms

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536 ms

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1105 ms

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1699 ms

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1697 ms

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1721 ms

mvc_detailed.png

mvc_detailed.png

1719 ms

live_status_feed.png

live_status_feed.png

1798 ms

DHH.jpg

DHH.jpg

1698 ms

JimmyWales.jpg

JimmyWales.jpg

1720 ms

payment-d6532f21f3d0117c7b88578c5666d2abf8598dc306db1198909969d73efb9de6.webp

payment-d6532f21f3d0117c7b88578c5666d2abf8598dc306db1198909969d73efb9de6.webp

87 ms

stripe-697e04c779dd1f74593ce93803987137493cffc44c593b5a73399025cf64820a.webp

stripe-697e04c779dd1f74593ce93803987137493cffc44c593b5a73399025cf64820a.webp

86 ms

cart_empty-d05104a77de6d5b902a3be3569c6c7ba841d8bcc2530593da0f69dd3764cdb43.webp

cart_empty-d05104a77de6d5b902a3be3569c6c7ba841d8bcc2530593da0f69dd3764cdb43.webp

86 ms

intro_video-thumbs-rails-b0a1feba6cd001bed52109077c0363f2c9d8f24c5dcba00dc038038288d0ab31.jpg

intro_video-thumbs-rails-b0a1feba6cd001bed52109077c0363f2c9d8f24c5dcba00dc038038288d0ab31.jpg

176 ms

icon_outline_book-675ea3f65592d62b33f30bd96896ac67fcf063a2353376fa234d89207279d770.png

icon_outline_book-675ea3f65592d62b33f30bd96896ac67fcf063a2353376fa234d89207279d770.png

442 ms

icon_outline_screencasts-62d5ecabad90751b6c41856f8011caa8b97c41ba284e45515b54ee3b7ca36d66.png

icon_outline_screencasts-62d5ecabad90751b6c41856f8011caa8b97c41ba284e45515b54ee3b7ca36d66.png

443 ms

icon_outline_course-cae685769eb102590970172d096917dd671617e1992b33e12cef4bba98e10197.png

icon_outline_course-cae685769eb102590970172d096917dd671617e1992b33e12cef4bba98e10197.png

443 ms

icon_checkout_course-532fff2c1925f0ba5f125de6d009164ca9f70a1f2911e89d6dfda51341e9299f.png

icon_checkout_course-532fff2c1925f0ba5f125de6d009164ca9f70a1f2911e89d6dfda51341e9299f.png

471 ms

blob1-316ecbf7d610e2bd1144d0ac73737010f6dbae631e572171f60440dc2c4558e9.svg

blob1-316ecbf7d610e2bd1144d0ac73737010f6dbae631e572171f60440dc2c4558e9.svg

533 ms

blob2-377ba99c5b0f43a0660362358697248e0f1b856a62a9bc4a0a5502efdc5175b5.svg

blob2-377ba99c5b0f43a0660362358697248e0f1b856a62a9bc4a0a5502efdc5175b5.svg

534 ms

scholarship_1.webp

scholarship_1.webp

951 ms

scholarship_17.webp

scholarship_17.webp

718 ms

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scholarship_3.webp

531 ms

scholarship_26.webp

scholarship_26.webp

1040 ms

scholarship_5.webp

scholarship_5.webp

951 ms

cover_rails-65c916f2ccb2a29ed86d81e752f13234b93254edf9e0cf1072edd7180767b21b.webp

cover_rails-65c916f2ccb2a29ed86d81e752f13234b93254edf9e0cf1072edd7180767b21b.webp

931 ms

logo_b-b5fd7dda9b14687b25e8bc4292bb027ff96b9da7e94ef5a4a2333c4da06c9afe.webp

logo_b-b5fd7dda9b14687b25e8bc4292bb027ff96b9da7e94ef5a4a2333c4da06c9afe.webp

932 ms

yourcourses_guide_subscribed-compressed-958e0facdb4d53ea70798819653ff9a690857f34a4c607a56c5ddc2057e178a3.jpg

yourcourses_guide_subscribed-compressed-958e0facdb4d53ea70798819653ff9a690857f34a4c607a56c5ddc2057e178a3.jpg

1040 ms

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b65522a6f3a6899705d119d7aa232a6d

1005 ms

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1041 ms

bg_blur2-3c509de689e389114d11c48c47edfc467b69616574ac70623199cb98bd132fbf.jpg

bg_blur2-3c509de689e389114d11c48c47edfc467b69616574ac70623199cb98bd132fbf.jpg

933 ms

js

js

494 ms

analytics.js

analytics.js

899 ms

js

js

488 ms

recaptcha__en.js

recaptcha__en.js

738 ms

vaqJMaceSU8

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1014 ms

ts

ts

1010 ms

jquery.min.js

jquery.min.js

806 ms

insight.min.js

insight.min.js

796 ms

pixel.js

pixel.js

789 ms

http:/

http:/

211 ms

widgets.js

widgets.js

914 ms

m-outer-3437aaddcdf6922d623e172c2d6f9278.html

m-outer-3437aaddcdf6922d623e172c2d6f9278.html

422 ms

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364 ms

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490 ms

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504 ms

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374 ms

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227 ms

js

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184 ms

inner-preview.html

inner-preview.html

222 ms

config

config

180 ms

rp.gif

rp.gif

209 ms

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100 ms

p.gif

p.gif

161 ms

www-player.css

www-player.css

89 ms

www-embed-player.js

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118 ms

base.js

base.js

170 ms

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107 ms

collect

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38 ms

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collect

collect

55 ms

settings

settings

447 ms

ga-audiences

ga-audiences

354 ms

ad_status.js

ad_status.js

420 ms

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102 ms

embed.js

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46 ms

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id

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215 ms

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27 ms

Create

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31 ms

GenerateIT

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26 ms

Tweet.html

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25 ms

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145 ms

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embed.Tweet.02ab0848482b3e69ec95.js

104 ms

Accessibility Review

railstutorial.com accessibility score

71

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

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

railstutorial.com best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

railstutorial.com SEO score

79

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Railstutorial.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 Railstutorial.com 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.com

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: