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Report Summary

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    Performance

  • 0

    Accessibility

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    Best Practices

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    SEO

online.stanford.edu

Home | Learning for a Lifetime | Stanford Online

Page Load Speed

11.1 sec in total

First Response

920 ms

Resources Loaded

9.8 sec

Page Rendered

284 ms

online.stanford.edu screenshot

About Website

Welcome to online.stanford.edu homepage info - get ready to check Online Stanford best content for United States right away, or after learning these important things about online.stanford.edu

Stanford Online offers learning opportunities via free online courses, online degrees, grad and professional certificates, e-learning, and open courses.

Visit online.stanford.edu

Key Findings

We analyzed Online.stanford.edu page load time and found that the first response time was 920 ms and then it took 10.1 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

online.stanford.edu performance score

0

Network Requests Diagram

online.stanford.edu

920 ms

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334 ms

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350 ms

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344 ms

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336 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 72% of them (41 requests) were addressed to the original Online.stanford.edu, 4% (2 requests) were made to Ajax.googleapis.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (7.9 sec) relates to the external source Web.stanford.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 667.1 kB (25%)

Content Size

2.7 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Online.stanford.edu main page is 2.7 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. 50% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 38.2 kB

  • Original 49.1 kB
  • After minification 46.2 kB
  • After compression 10.9 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. 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 38.2 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 23.8 kB

  • Original 1.8 MB
  • After minification 1.8 MB

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. Online Stanford images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 273.4 kB

  • Original 423.9 kB
  • After minification 378.6 kB
  • After compression 150.5 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 273.4 kB or 64% of the original size.

CSS Optimization

-83%

Potential reduce by 331.7 kB

  • Original 401.3 kB
  • After minification 397.0 kB
  • After compression 69.6 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. Online.stanford.edu needs all CSS files to be minified and compressed as it can save up to 331.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (43%)

Requests Now

54

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Online Stanford. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

online.stanford.edu

online.stanford.edu

920 ms

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334 ms

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350 ms

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344 ms

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336 ms

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css

24 ms

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338 ms

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347 ms

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663 ms

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31 ms

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682 ms

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54 ms

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700 ms

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699 ms

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702 ms

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699 ms

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997 ms

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1045 ms

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5 ms

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12 ms

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175 ms

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266 ms

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345 ms

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342 ms

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345 ms

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348 ms

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12 ms

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55 ms

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80 ms

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2694 ms

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27 ms

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30 ms

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335 ms

SEO Factors

online.stanford.edu SEO score

0

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Online.stanford.edu can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Online.stanford.edu 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

online.stanford.edu

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