Tools & Wizards About Us
assemblathon.org screenshot

Report Summary

  • 73

    Performance

    Renders faster than
    82% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

assemblathon.org

The Assemblathon

Page Load Speed

773 ms in total

First Response

47 ms

Resources Loaded

641 ms

Page Rendered

85 ms

assemblathon.org screenshot

About Website

Visit assemblathon.org now to see the best up-to-date Assemblathon content and also check out these interesting facts you probably never knew about assemblathon.org

An offshoot of the Genome 10K project, and primarily organized by the UC Davis Genome Center, Assemblathons are contests to assess state-of-the-art methods in the field of genome assembly....

Visit assemblathon.org

Key Findings

We analyzed Assemblathon.org page load time and found that the first response time was 47 ms and then it took 726 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

assemblathon.org performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

76/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

42/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value300 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

Network Requests Diagram

assemblathon.org

47 ms

assemblathon.org

172 ms

pre_tumblelog.js

72 ms

index.build.css

76 ms

jquery.fancybox-1.3.1.css

75 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 7% of them (3 requests) were addressed to the original Assemblathon.org, 30% (13 requests) were made to Static.tumblr.com and 26% (11 requests) were made to Assets.tumblr.com. The less responsive or slowest element that took the longest time to load (224 ms) relates to the external source Px.srvcs.tumblr.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 164.4 kB (41%)

Content Size

396.8 kB

After Optimization

232.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Assemblathon.org main page is 396.8 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. 65% of websites need less resources to load. Javascripts take 147.2 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 91.0 kB

  • Original 119.0 kB
  • After minification 110.4 kB
  • After compression 28.0 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 91.0 kB or 76% of the original size.

Image Optimization

-58%

Potential reduce by 66.2 kB

  • Original 114.4 kB
  • After minification 48.2 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, Assemblathon needs image optimization as it can save up to 66.2 kB or 58% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 6.4 kB

  • Original 147.2 kB
  • After minification 147.2 kB
  • After compression 140.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-5%

Potential reduce by 754 B

  • Original 16.2 kB
  • After minification 16.2 kB
  • After compression 15.4 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. Assemblathon.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 22 (61%)

Requests Now

36

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Assemblathon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

assemblathon.org

assemblathon.org

47 ms

assemblathon.org

assemblathon.org

172 ms

pre_tumblelog.js

pre_tumblelog.js

72 ms

index.build.css

index.build.css

76 ms

jquery.fancybox-1.3.1.css

jquery.fancybox-1.3.1.css

75 ms

style.css

style.css

78 ms

modernizr.2.6.1.min.js

modernizr.2.6.1.min.js

82 ms

bilmur.min.js

bilmur.min.js

97 ms

tumblelog_post_message_queue.js

tumblelog_post_message_queue.js

77 ms

stylesheet.css

stylesheet.css

73 ms

tweets.js

tweets.js

36 ms

jquery.min.js

jquery.min.js

97 ms

script.js

script.js

107 ms

widgets.js

widgets.js

55 ms

plusone.js

plusone.js

126 ms

index.build.js

index.build.js

106 ms

tumblr_inline_p9ph04MEoB1rh4uu5_500.jpg

tumblr_inline_p9ph04MEoB1rh4uu5_500.jpg

210 ms

5cbd4b4d287f21a7674db2235c532a8c2ad12bac.jpg

5cbd4b4d287f21a7674db2235c532a8c2ad12bac.jpg

207 ms

avatar_9299fbe764ca_64.pnj

avatar_9299fbe764ca_64.pnj

207 ms

effector-sprite.png

effector-sprite.png

147 ms

tumblr_static_assemblathon_banner_940_px.png

tumblr_static_assemblathon_banner_940_px.png

203 ms

post_shadow.png

post_shadow.png

146 ms

photo_btns_med.png

photo_btns_med.png

174 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

167 ms

impixu

impixu

224 ms

g.gif

g.gif

149 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

114 ms

impixu

impixu

137 ms

analytics.html

analytics.html

64 ms

login_check.html

login_check.html

19 ms

post_shadow.png

post_shadow.png

57 ms

effector-sprite.png

effector-sprite.png

56 ms

topbar_bg.png

topbar_bg.png

53 ms

header_shadow.png

header_shadow.png

53 ms

g.gif

g.gif

73 ms

photo_btns_med.png

photo_btns_med.png

46 ms

consent

consent

92 ms

cs.js

cs.js

13 ms

header.build.js

header.build.js

3 ms

exceptions.js

exceptions.js

5 ms

index.build.js

index.build.js

7 ms

cdn.json

cdn.json

21 ms

g.gif

g.gif

5 ms

Accessibility Review

assemblathon.org accessibility score

61

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

<frame> or <iframe> elements do not have a title

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

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

assemblathon.org 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

assemblathon.org SEO score

91

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Assemblathon.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Assemblathon.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

assemblathon.org

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