Tools & Wizards About Us
rubykaigi.org screenshot

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 85

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

rubykaigi.org

RubyKaigi 2024 - RubyKaigi 2024

Page Load Speed

1.6 sec in total

First Response

192 ms

Resources Loaded

634 ms

Page Rendered

799 ms

rubykaigi.org screenshot

About Website

Visit rubykaigi.org now to see the best up-to-date Ruby Kaigi content for United States and also check out these interesting facts you probably never knew about rubykaigi.org

RubyKaigi 2024, #rubykaigi

Visit rubykaigi.org

Key Findings

We analyzed Rubykaigi.org page load time and found that the first response time was 192 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

rubykaigi.org performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

80/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

28/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.343

33/100

15%

TTI (Time to Interactive)

Value2.2 s

99/100

10%

Network Requests Diagram

rubykaigi.org

192 ms

2015

31 ms

jquery-2.0.3.min.js

29 ms

css

49 ms

all.js

49 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 84% of them (58 requests) were addressed to the original Rubykaigi.org, 7% (5 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (225 ms) belongs to the original domain Rubykaigi.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (65%)

Content Size

1.7 MB

After Optimization

616.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rubykaigi.org main page is 1.7 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. 65% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 16.6 kB

  • Original 19.9 kB
  • After minification 16.1 kB
  • After compression 3.4 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 3.9 kB, which is 19% 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 16.6 kB or 83% of the original size.

Image Optimization

-62%

Potential reduce by 854.3 kB

  • Original 1.4 MB
  • After minification 518.2 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, Ruby Kaigi needs image optimization as it can save up to 854.3 kB or 62% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 92.7 kB

  • Original 153.0 kB
  • After minification 149.3 kB
  • After compression 60.2 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 92.7 kB or 61% of the original size.

CSS Optimization

-82%

Potential reduce by 158.7 kB

  • Original 193.7 kB
  • After minification 193.0 kB
  • After compression 35.0 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. Rubykaigi.org needs all CSS files to be minified and compressed as it can save up to 158.7 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (5%)

Requests Now

61

After Optimization

58

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ruby Kaigi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rubykaigi.org

rubykaigi.org

192 ms

2015

2015

31 ms

jquery-2.0.3.min.js

jquery-2.0.3.min.js

29 ms

css

css

49 ms

all.js

all.js

49 ms

all.css

all.css

84 ms

logo-header.svg

logo-header.svg

194 ms

logo.svg

logo.svg

191 ms

sushidot_maguro.png

sushidot_maguro.png

195 ms

cookpad.png

cookpad.png

196 ms

moneyforward.png

moneyforward.png

199 ms

pixiv.png

pixiv.png

198 ms

speee.png

speee.png

199 ms

mwed.png

mwed.png

204 ms

tabelog.png

tabelog.png

201 ms

dwango.png

dwango.png

201 ms

recruit_mp.png

recruit_mp.png

199 ms

xflag.png

xflag.png

204 ms

aiming.png

aiming.png

205 ms

akatsuki.png

akatsuki.png

208 ms

wantedly.png

wantedly.png

207 ms

esm.png

esm.png

208 ms

dena.png

dena.png

211 ms

bitjourney.png

bitjourney.png

214 ms

goodpatch.png

goodpatch.png

211 ms

webpay.png

webpay.png

212 ms

pepabo.png

pepabo.png

214 ms

fastly.png

fastly.png

214 ms

degica.png

degica.png

216 ms

grooves.png

grooves.png

217 ms

enigmo.png

enigmo.png

217 ms

mediweb.png

mediweb.png

219 ms

github.png

github.png

218 ms

pivotal.png

pivotal.png

225 ms

travis.png

travis.png

220 ms

gree.png

gree.png

218 ms

clearcode.png

clearcode.png

220 ms

spicelife.png

spicelife.png

218 ms

everyleaf.png

everyleaf.png

223 ms

agileware.png

agileware.png

220 ms

beenos.png

beenos.png

221 ms

ga.js

ga.js

172 ms

http%3A%2F%2Frubykaigi.org%2F2015

http%3A%2F%2Frubykaigi.org%2F2015

111 ms

7XUFZ5tgS-tD6QamInJTcZ_o9VAbKgK36i-4snuAuCM.woff

7XUFZ5tgS-tD6QamInJTcZ_o9VAbKgK36i-4snuAuCM.woff

76 ms

anMUvcNT0H1YN4FII8wpr1uKlGE8-OjkUKWan_M3D6s.woff

anMUvcNT0H1YN4FII8wpr1uKlGE8-OjkUKWan_M3D6s.woff

80 ms

anMUvcNT0H1YN4FII8wpr-K9kSItTeDn2USN0q77Oh4.woff

anMUvcNT0H1YN4FII8wpr-K9kSItTeDn2USN0q77Oh4.woff

106 ms

anMUvcNT0H1YN4FII8wprx3QmhlKDgQgT1VN2Ed1WFo.woff

anMUvcNT0H1YN4FII8wprx3QmhlKDgQgT1VN2Ed1WFo.woff

107 ms

anMUvcNT0H1YN4FII8wpr_5rZpfU3XI-FvUPGDRT0xY.woff

anMUvcNT0H1YN4FII8wpr_5rZpfU3XI-FvUPGDRT0xY.woff

106 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

105 ms

rakuten.png

rakuten.png

72 ms

ailand.png

ailand.png

66 ms

salesforce.png

salesforce.png

68 ms

engineyard.png

engineyard.png

66 ms

crevo.png

crevo.png

64 ms

doorkeeper.png

doorkeeper.png

92 ms

esa.png

esa.png

93 ms

misoca.png

misoca.png

135 ms

sushi_on_rails.png

sushi_on_rails.png

90 ms

88x31.png

88x31.png

104 ms

baran.png

baran.png

88 ms

sushidot_ikura.png

sushidot_ikura.png

102 ms

sushidot_toro.png

sushidot_toro.png

123 ms

sushidot_ebi.png

sushidot_ebi.png

122 ms

sushidot_uni.png

sushidot_uni.png

100 ms

sushidot_saba.png

sushidot_saba.png

97 ms

sushidot_anago.png

sushidot_anago.png

119 ms

sushidot_ika.png

sushidot_ika.png

119 ms

sushidot_tamago.png

sushidot_tamago.png

117 ms

__utm.gif

__utm.gif

75 ms

Accessibility Review

rubykaigi.org accessibility score

92

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

rubykaigi.org best practices score

85

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

rubykaigi.org SEO score

100

Search Engine Optimization Advices

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 Rubykaigi.org 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 Rubykaigi.org 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

rubykaigi.org

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