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shodor.org screenshot

Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

shodor.org

Shodor: A National Resource for Computational Science Education

Page Load Speed

734 ms in total

First Response

169 ms

Resources Loaded

429 ms

Page Rendered

136 ms

shodor.org screenshot

About Website

Click here to check amazing Shodor content for United States. Otherwise, check out these important facts you probably never knew about shodor.org

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Key Findings

We analyzed Shodor.org page load time and found that the first response time was 169 ms and then it took 565 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

shodor.org performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.1 s

86/100

10%

Network Requests Diagram

shodor.org

169 ms

main.css

32 ms

toolkit.css

23 ms

xforms.css

29 ms

main.js

36 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 83% of them (24 requests) were addressed to the original Shodor.org, 7% (2 requests) were made to Google.com and 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (169 ms) belongs to the original domain Shodor.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 175.7 kB (51%)

Content Size

343.8 kB

After Optimization

168.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Shodor.org main page is 343.8 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. 20% of websites need less resources to load. Javascripts take 185.5 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 9.8 kB

  • Original 13.1 kB
  • After minification 12.3 kB
  • After compression 3.3 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 9.8 kB or 75% of the original size.

Image Optimization

-6%

Potential reduce by 6.7 kB

  • Original 106.6 kB
  • After minification 99.9 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. Shodor images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 129.0 kB

  • Original 185.5 kB
  • After minification 167.5 kB
  • After compression 56.5 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 129.0 kB or 70% of the original size.

CSS Optimization

-78%

Potential reduce by 30.2 kB

  • Original 38.7 kB
  • After minification 29.7 kB
  • After compression 8.5 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. Shodor.org needs all CSS files to be minified and compressed as it can save up to 30.2 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (44%)

Requests Now

27

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Shodor. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

shodor.org

shodor.org

169 ms

main.css

main.css

32 ms

toolkit.css

toolkit.css

23 ms

xforms.css

xforms.css

29 ms

main.js

main.js

36 ms

prototype.js

prototype.js

70 ms

scriptaculous.js

scriptaculous.js

28 ms

toolkit.js

toolkit.js

46 ms

headlines.js

headlines.js

45 ms

styles.css

styles.css

55 ms

content_css.css

content_css.css

149 ms

xforms.js

xforms.js

56 ms

brand

brand

21 ms

brand

brand

99 ms

effects.js

effects.js

54 ms

ga.js

ga.js

32 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

61 ms

BodyBackground.png

BodyBackground.png

55 ms

logoBaro.jpg

logoBaro.jpg

57 ms

mainNavButtons2.gif

mainNavButtons2.gif

54 ms

transforming.gif

transforming.gif

58 ms

welcome.gif

welcome.gif

61 ms

headlineNews.gif

headlineNews.gif

53 ms

3YWM3NGUyYWY1ODM0ODg1NjQ4YzAyOTU5YjBkMTY.gif

3YWM3NGUyYWY1ODM0ODg1NjQ4YzAyOTU5YjBkMTY.gif

93 ms

hYTkxNmM1YTZjMDYxZGZhYWY4M2EwODg0ZDZhYWI.gif

hYTkxNmM1YTZjMDYxZGZhYWY4M2EwODg0ZDZhYWI.gif

93 ms

zNmZlMWQ2YWMxYzk1M2M0YzZlM2E0ZWRlNzhkYWQ.gif

zNmZlMWQ2YWMxYzk1M2M0YzZlM2E0ZWRlNzhkYWQ.gif

84 ms

BottomBackground.gif

BottomBackground.gif

77 ms

BottomBarLogos.gif

BottomBarLogos.gif

86 ms

__utm.gif

__utm.gif

13 ms

Accessibility Review

shodor.org accessibility score

67

Accessibility Issues

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

shodor.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

shodor.org SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Shodor.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 Shodor.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

shodor.org

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