Report Summary

  • 57

    Performance

    Renders faster than
    75% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

ophsource.org

Medicine. Books, Journals, Solutions & More - Elsevier

Page Load Speed

4.2 sec in total

First Response

251 ms

Resources Loaded

3.7 sec

Page Rendered

228 ms

ophsource.org screenshot

About Website

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

Discover our Medicine Books, eBooks, Journals, and Solutions. Build expertise and make better decisions!

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Key Findings

We analyzed Ophsource.org page load time and found that the first response time was 251 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

ophsource.org performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value7.7 s

45/100

10%

Network Requests Diagram

ophsource.org

251 ms

getSharedSiteSession

523 ms

getSharedSiteSession

216 ms

consumeSharedSessionAction

145 ms

consumeSharedSessionAction

141 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 54% of them (49 requests) were addressed to the original Ophsource.org, 9% (8 requests) were made to Covers.elsevier.com and 3% (3 requests) were made to Securepubads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Ophsource.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 774.7 kB (57%)

Content Size

1.4 MB

After Optimization

591.9 kB

In fact, the total size of Ophsource.org main page is 1.4 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. 45% of websites need less resources to load. Javascripts take 952.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 149.8 kB

  • Original 193.1 kB
  • After minification 159.0 kB
  • After compression 43.3 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. This page needs HTML code to be minified as it can gain 34.1 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 149.8 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 3.5 kB

  • Original 213.1 kB
  • After minification 209.6 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. Ophsource images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 615.3 kB

  • Original 952.9 kB
  • After minification 949.7 kB
  • After compression 337.5 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 615.3 kB or 65% of the original size.

CSS Optimization

-81%

Potential reduce by 6.0 kB

  • Original 7.4 kB
  • After minification 7.4 kB
  • After compression 1.4 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. Ophsource.org needs all CSS files to be minified and compressed as it can save up to 6.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (48%)

Requests Now

77

After Optimization

40

The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ophsource. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

ophsource.org accessibility score

91

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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.

Best Practices

ophsource.org best practices score

83

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

Page has valid source maps

SEO Factors

ophsource.org SEO score

85

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

Links do not have descriptive text

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 Ophsource.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 Ophsource.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

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