Tools & Wizards About Us
rvm.io screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

rvm.io

RVM: Ruby Version Manager - RVM Ruby Version Manager - Documentation

Page Load Speed

1.2 sec in total

First Response

61 ms

Resources Loaded

380 ms

Page Rendered

802 ms

rvm.io screenshot

About Website

Click here to check amazing RVM content for United States. Otherwise, check out these important facts you probably never knew about rvm.io

Visit rvm.io

Key Findings

We analyzed Rvm.io page load time and found that the first response time was 61 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

rvm.io performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

52/100

25%

SI (Speed Index)

Value2.3 s

99/100

10%

TBT (Total Blocking Time)

Value280 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

rvm.io

61 ms

screen.css

19 ms

carbon.js

32 ms

jsapi

43 ms

jsapi

58 ms

Our browser made a total of 24 requests to load all elements on the main page. We found that 38% of them (9 requests) were addressed to the original Rvm.io, 13% (3 requests) were made to Img.shields.io and 13% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (154 ms) relates to the external source Srv.carbonads.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 70.7 kB (17%)

Content Size

414.7 kB

After Optimization

344.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rvm.io main page is 414.7 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 315.9 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 16.3 kB

  • Original 22.2 kB
  • After minification 17.4 kB
  • After compression 5.9 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 4.8 kB, which is 22% 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 16.3 kB or 73% of the original size.

Image Optimization

-2%

Potential reduce by 5.6 kB

  • Original 315.9 kB
  • After minification 310.3 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. RVM images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 36.8 kB

  • Original 61.3 kB
  • After minification 61.3 kB
  • After compression 24.5 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 36.8 kB or 60% of the original size.

CSS Optimization

-78%

Potential reduce by 12.0 kB

  • Original 15.3 kB
  • After minification 15.2 kB
  • After compression 3.3 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. Rvm.io needs all CSS files to be minified and compressed as it can save up to 12.0 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (59%)

Requests Now

22

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RVM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rvm.io

rvm.io

61 ms

screen.css

screen.css

19 ms

carbon.js

carbon.js

32 ms

jsapi

jsapi

43 ms

jsapi

jsapi

58 ms

site.js

site.js

25 ms

logo.png

logo.png

31 ms

linode_logo_gray.png

linode_logo_gray.png

32 ms

fastly_logo-01.png

fastly_logo-01.png

62 ms

rvm-logo-all-happy.png

rvm-logo-all-happy.png

66 ms

bottom-gradient.gif

bottom-gradient.gif

15 ms

bgtex.jpg

bgtex.jpg

15 ms

C6AILKT.json

C6AILKT.json

154 ms

jquery.min.js

jquery.min.js

91 ms

jquery-ui.min.js

jquery-ui.min.js

140 ms

donate-$5-brightgreen.svg

donate-$5-brightgreen.svg

136 ms

donate-$100-brightgreen.svg

donate-$100-brightgreen.svg

131 ms

donate-$20-brightgreen.svg

donate-$20-brightgreen.svg

131 ms

27508

27508

120 ms

analytics.js

analytics.js

35 ms

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

31 ms

collect

collect

16 ms

collect

collect

33 ms

pix

pix

19 ms

Accessibility Review

rvm.io accessibility score

95

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

Best Practices

rvm.io 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

High

Browser errors were logged to the console

SEO Factors

rvm.io SEO score

58

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

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 Rvm.io 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 Rvm.io 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

rvm.io

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