Tools & Wizards About Us

Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

sciencedirect.com

ScienceDirect.com | Science, health and medical journals, full text articles and books.

Page Load Speed

936 ms in total

First Response

21 ms

Resources Loaded

504 ms

Page Rendered

411 ms

About Website

Click here to check amazing Science Direct content for China. Otherwise, check out these important facts you probably never knew about sciencedirect.com

ScienceDirect is the world's leading source for scientific, technical, and medical research. Explore journals, books and articles.

Visit sciencedirect.com

Key Findings

We analyzed Sciencedirect.com page load time and found that the first response time was 21 ms and then it took 915 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

sciencedirect.com performance score

0

Network Requests Diagram

sciencedirect.com

21 ms

www.sciencedirect.com

222 ms

client.css

91 ms

elsevier-non-solus-new-grey.svg

75 ms

confidence_in_research_logo.png

86 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 31% of them (4 requests) were addressed to the original Sciencedirect.com, 69% (9 requests) were made to Sdfestaticassets-us-east-1.sciencedirectassets.com. The less responsive or slowest element that took the longest time to load (222 ms) belongs to the original domain Sciencedirect.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 135.0 kB (6%)

Content Size

2.1 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sciencedirect.com main page is 2.1 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. 30% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 134.5 kB

  • Original 173.0 kB
  • After minification 172.9 kB
  • After compression 38.5 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 134.5 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 560 B

  • Original 1.4 MB
  • After minification 1.4 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. Science Direct images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 479.6 kB
  • After minification 479.6 kB
  • After compression 479.6 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

-0%

Potential reduce by 0 B

  • Original 12.8 kB
  • After minification 12.8 kB
  • After compression 12.8 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. Sciencedirect.com has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Direct. According to our analytics all requests are already optimized.

Network Requests Diagram

SEO Factors

sciencedirect.com SEO score

0

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 Sciencedirect.com 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 Sciencedirect.com 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

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