Tools & Wizards About Us
regeneron.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

regeneron.com

Regeneron Pharmaceuticals: Delivering Life-transforming Medicines

Page Load Speed

1.5 sec in total

First Response

114 ms

Resources Loaded

631 ms

Page Rendered

759 ms

regeneron.com screenshot

About Website

Visit regeneron.com now to see the best up-to-date Regeneron content for United States and also check out these interesting facts you probably never knew about regeneron.com

Regeneron (NASDAQ: REGN) is a leading biotechnology company using the power of science to bring new medicines to patients in need. Learn more.

Visit regeneron.com

Key Findings

We analyzed Regeneron.com page load time and found that the first response time was 114 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

regeneron.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value950 ms

29/100

30%

CLS (Cumulative Layout Shift)

Value0.074

95/100

15%

TTI (Time to Interactive)

Value15.3 s

7/100

10%

Network Requests Diagram

regeneron.com

114 ms

www.regeneron.com

86 ms

gtm.js

160 ms

css2

110 ms

css

61 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 67% of them (49 requests) were addressed to the original Regeneron.com, 18% (13 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Player.vimeo.com. The less responsive or slowest element that took the longest time to load (390 ms) belongs to the original domain Regeneron.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 214.8 kB (16%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Regeneron.com main page is 1.3 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. 75% 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. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 85.6 kB

  • Original 102.4 kB
  • After minification 102.4 kB
  • After compression 16.8 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 85.6 kB or 84% of the original size.

Image Optimization

-11%

Potential reduce by 128.3 kB

  • Original 1.2 MB
  • After minification 1.1 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. Obviously, Regeneron needs image optimization as it can save up to 128.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-9%

Potential reduce by 921 B

  • Original 10.6 kB
  • After minification 10.6 kB
  • After compression 9.7 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.

Requests Breakdown

Number of requests can be reduced by 22 (38%)

Requests Now

58

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Regeneron. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

regeneron.com

regeneron.com

114 ms

www.regeneron.com

www.regeneron.com

86 ms

gtm.js

gtm.js

160 ms

css2

css2

110 ms

css

css

61 ms

318249556

318249556

292 ms

555739948

555739948

203 ms

735435161

735435161

296 ms

styles

styles

98 ms

jquery

jquery

96 ms

jquery-unobtrusive-ajax

jquery-unobtrusive-ajax

95 ms

scripts

scripts

95 ms

popper.min.js

popper.min.js

140 ms

bootstrap.min.js

bootstrap.min.js

170 ms

jquery.validate.min.js

jquery.validate.min.js

144 ms

jquery.validate.unobtrusive.min.js

jquery.validate.unobtrusive.min.js

144 ms

jquery.unobtrusive-ajax.min.js

jquery.unobtrusive-ajax.min.js

191 ms

atleastonecheckbox.js

atleastonecheckbox.js

168 ms

scripts

scripts

188 ms

api.ipify.org

api.ipify.org

188 ms

REGENERON-logo-white.svg

REGENERON-logo-white.svg

188 ms

icon-LinkedIn-white.svg

icon-LinkedIn-white.svg

187 ms

icon_instagram.png

icon_instagram.png

183 ms

icon-Facebook-white.svg

icon-Facebook-white.svg

184 ms

icon-YouTube-white.svg

icon-YouTube-white.svg

224 ms

icon-x-white.svg

icon-x-white.svg

220 ms

attachment.aspx

attachment.aspx

221 ms

callout-arrow.png

callout-arrow.png

223 ms

cancer-care.png

cancer-care.png

224 ms

attachment.aspx

attachment.aspx

218 ms

home-scientist-m.png

home-scientist-m.png

310 ms

home-pipeline-m.png

home-pipeline-m.png

310 ms

home-scientist-video-m.png

home-scientist-video-m.png

308 ms

home-complex-mysteries1.png

home-complex-mysteries1.png

340 ms

home-scientist-video.png

home-scientist-video.png

347 ms

icon_med-pros.png

icon_med-pros.png

309 ms

home-cta-improving-lives.png

home-cta-improving-lives.png

346 ms

home-cta-integrity-excellence.png

home-cta-integrity-excellence.png

347 ms

home-cta-sustainable-communities.png

home-cta-sustainable-communities.png

339 ms

icon-pandemic-speed.svg

icon-pandemic-speed.svg

342 ms

icon-heros.svg

icon-heros.svg

390 ms

home-join-our-team.png

home-join-our-team.png

385 ms

REGENERON-logo-footer.svg

REGENERON-logo-footer.svg

387 ms

home-complex-mysteries-trans-bg.png

home-complex-mysteries-trans-bg.png

260 ms

home-doing-well-bg.png

home-doing-well-bg.png

273 ms

home-join-team-bg.png

home-join-team-bg.png

270 ms

icon-arrow-white.svg

icon-arrow-white.svg

267 ms

icon-arrow-blue.svg

icon-arrow-blue.svg

270 ms

icon-arrow-white.svg

icon-arrow-white.svg

276 ms

cta-bg.png

cta-bg.png

275 ms

KFOkCnqEu92Fr1Mu52xM.woff

KFOkCnqEu92Fr1Mu52xM.woff

63 ms

KFOjCnqEu92Fr1Mu51S7ABc-.woff

KFOjCnqEu92Fr1Mu51S7ABc-.woff

93 ms

KFOjCnqEu92Fr1Mu51TjARc-.woff

KFOjCnqEu92Fr1Mu51TjARc-.woff

152 ms

KFOiCnqEu92Fr1Mu51QrIzQ.woff

KFOiCnqEu92Fr1Mu51QrIzQ.woff

152 ms

KFOjCnqEu92Fr1Mu51TzBhc-.woff

KFOjCnqEu92Fr1Mu51TzBhc-.woff

152 ms

KFOmCnqEu92Fr1Me5g.woff

KFOmCnqEu92Fr1Me5g.woff

152 ms

KFOlCnqEu92Fr1MmEU9vAA.woff

KFOlCnqEu92Fr1MmEU9vAA.woff

151 ms

KFOlCnqEu92Fr1MmSU5vAA.woff

KFOlCnqEu92Fr1MmSU5vAA.woff

150 ms

KFOkCnqEu92Fr1MmgWxM.woff

KFOkCnqEu92Fr1MmgWxM.woff

177 ms

KFOlCnqEu92Fr1MmWUlvAA.woff

KFOlCnqEu92Fr1MmWUlvAA.woff

180 ms

oam_dl-button.png

oam_dl-button.png

275 ms

btn-arrow-white.svg

btn-arrow-white.svg

269 ms

icon_cta-caret.svg

icon_cta-caret.svg

271 ms

btn-download.svg

btn-download.svg

243 ms

btn-arrow-white.svg

btn-arrow-white.svg

230 ms

icon-arrow-rubine.svg

icon-arrow-rubine.svg

232 ms

icon-download-rubine.svg

icon-download-rubine.svg

238 ms

1148435171-2c6ccbf6de9fb809450e2b0880fc9fd03aec3de5c838b9b822df1a930ba9d023-d

1148435171-2c6ccbf6de9fb809450e2b0880fc9fd03aec3de5c838b9b822df1a930ba9d023-d

150 ms

762375912-f49c6d94dde0d2ad8420159c291f78be1e5381961b1c252ddfe30dd22418e6a2-d

762375912-f49c6d94dde0d2ad8420159c291f78be1e5381961b1c252ddfe30dd22418e6a2-d

147 ms

1479927332-3526d1fae943ae48c279c0a5963ae1b1d5780c5fbcf32779ec902b8eb61ba3ef-d

1479927332-3526d1fae943ae48c279c0a5963ae1b1d5780c5fbcf32779ec902b8eb61ba3ef-d

109 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyXsovBK.woff

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyXsovBK.woff

61 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyovBK.woff

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyovBK.woff

62 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpfBK.woff

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpfBK.woff

59 ms

Accessibility Review

regeneron.com accessibility score

60

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

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

High

ARIA IDs are not unique

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

Image elements do not have [alt] attributes

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

Best Practices

regeneron.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

regeneron.com SEO score

90

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

Image elements do not have [alt] attributes

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 Regeneron.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 Regeneron.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

regeneron.com

Open Graph data is detected on the main page of Regeneron. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: