Access janssenbiotech.com. Collaborating for a Healthier World

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value22.3 s

0/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value1,210 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.584

11/100

15%

TTI (Time to Interactive)

Value16.3 s

5/100

10%

janssenbiotech.com

178 ms

1316 ms

otSDKStub.js

37 ms

system.base.css

22 ms

system.menus.theme.css

32 ms

Our browser made a total of 113 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Janssenbiotech.com, 92% (104 requests) were made to Janssen.com and 3% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Janssen.com.

Content Size

10.7 MB

After Optimization

10.6 MB

In fact, the total size of Janssenbiotech.com main page is 10.7 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. Only a small number of websites need less resources to load. Images take 10.2 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 88.2 kB

Original 121.7 kB
After minification 121.6 kB
After compression 33.5 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 88.2 kB or 72% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 10.2 MB
After minification 10.2 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. Janssen Biotech images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 38.6 kB

Original 307.1 kB
After minification 307.0 kB
After compression 268.5 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 38.6 kB or 13% of the original size.

CSS Optimization

-0%

Potential reduce by 194 B

Original 103.2 kB
After minification 103.2 kB
After compression 103.0 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. Janssenbiotech.com has all CSS files already compressed.

Requests Now

104

After Optimization

The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Janssen Biotech. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 51 to 1 for JavaScripts and from 27 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

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/).

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 Janssenbiotech.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 Janssenbiotech.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

janssenbiotech.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Collaborating for a Healthier World | Janssen United States

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

janssenbiotech.com

otSDKStub.js

system.base.css

system.menus.theme.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

janssenbiotech.com

otSDKStub.js

system.base.css

system.menus.theme.css

system.messages.theme.css

system.theme.css

date.css

aggregator.theme.css

datepicker.1.7.css

comment.theme.css

node.css

field.theme.css

extlink.css

search.theme.css

views.css

user.base.css

user.theme.css

ckeditor.css

janssen_features.css

janssen_latam.css

ctools.css

janssen-menu.css

janssen-covidpthcp.css

panels.css

take_over.css

templates.css

screen.css

jquery.min.js

jquery-extend-3.4.0.js

jquery-html-prefilter-3.5.0-backport.js

jquery.once.js

flags.js

drupal.js

no-js.js

jquery.cookie.js

appscroll.js

BrightcoveExperiences.js

imagesloaded.pkgd.min.js

modernizr.custom.74127.js

purl.js

underscore-min.js

4a26b1b2-8de1-4567-bb3a-ea4e47ff41e4.json

extlink.js

janssne_local_tweeks.js