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studydatascience.org screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 46

    SEO

    Google-friendlier than
    18% of websites

studydatascience.org

Top Destination for Data Science Careers and Education | StudyDataScience

Page Load Speed

11.7 sec in total

First Response

2.4 sec

Resources Loaded

8.8 sec

Page Rendered

489 ms

studydatascience.org screenshot

About Website

Click here to check amazing Study Data Science content. Otherwise, check out these important facts you probably never knew about studydatascience.org

Study Data Science is the number-one destination for data science careers, education, job training, and professional organizations.

Visit studydatascience.org

Key Findings

We analyzed Studydatascience.org page load time and found that the first response time was 2.4 sec and then it took 9.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

studydatascience.org performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value13.0 s

2/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.0 s

76/100

10%

Network Requests Diagram

studydatascience.org

2405 ms

studydatascience.org

4105 ms

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48 ms

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50 ms

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51 ms

Our browser made a total of 124 requests to load all elements on the main page. We found that 80% of them (99 requests) were addressed to the original Studydatascience.org, 9% (11 requests) were made to Fonts.gstatic.com and 2% (3 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (4.1 sec) belongs to the original domain Studydatascience.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 345.3 kB (22%)

Content Size

1.5 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Studydatascience.org main page is 1.5 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. 80% 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 612.2 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 246.0 kB

  • Original 289.0 kB
  • After minification 282.3 kB
  • After compression 43.0 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 246.0 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 452.4 kB
  • After minification 452.4 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. Study Data Science images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 96.1 kB

  • Original 612.2 kB
  • After minification 612.2 kB
  • After compression 516.2 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 96.1 kB or 16% of the original size.

CSS Optimization

-2%

Potential reduce by 3.2 kB

  • Original 186.5 kB
  • After minification 186.0 kB
  • After compression 183.3 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. Studydatascience.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 100 (96%)

Requests Now

104

After Optimization

4

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Study Data Science. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 68 to 1 for JavaScripts and from 34 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

studydatascience.org

studydatascience.org

2405 ms

studydatascience.org

studydatascience.org

4105 ms

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48 ms

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Accessibility Review

studydatascience.org accessibility score

79

Accessibility Issues

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

Buttons do not have an accessible name

High

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

studydatascience.org best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

studydatascience.org SEO score

46

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

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

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

    EN

  • Encoding

    UTF-8

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

studydatascience.org

Open Graph description is not detected on the main page of Study Data Science. 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: