Tools & Wizards About Us
sierraoncology.com screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

sierraoncology.com

Home | GSK

Page Load Speed

19.4 sec in total

First Response

49 ms

Resources Loaded

6.5 sec

Page Rendered

12.9 sec

sierraoncology.com screenshot

About Website

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

At GSK, we unite science, technology and talent to get ahead of disease together

Visit sierraoncology.com

Key Findings

We analyzed Sierraoncology.com page load time and found that the first response time was 49 ms and then it took 19.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

sierraoncology.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value17.0 s

0/100

25%

SI (Speed Index)

Value14.7 s

1/100

10%

TBT (Total Blocking Time)

Value920 ms

30/100

30%

CLS (Cumulative Layout Shift)

Value0.02

100/100

15%

TTI (Time to Interactive)

Value22.6 s

1/100

10%

Network Requests Diagram

sierraoncology.com

49 ms

www.gsk.com

44 ms

91 ms

DependencyHandler.axd

34 ms

DependencyHandler.axd

128 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Sierraoncology.com, 95% (53 requests) were made to Gsk.com and 2% (1 request) were made to Tags.tiqcdn.com. The less responsive or slowest element that took the longest time to load (6.1 sec) relates to the external source Gsk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 283.9 kB (6%)

Content Size

4.6 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sierraoncology.com main page is 4.6 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. 80% 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 3.3 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 238.9 kB

  • Original 267.6 kB
  • After minification 140.0 kB
  • After compression 28.7 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 127.5 kB, which is 48% 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 238.9 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 45.0 kB

  • Original 3.3 MB
  • After minification 3.3 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. Sierraoncology images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 818.5 kB
  • After minification 818.5 kB
  • After compression 818.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 160.4 kB
  • After minification 160.4 kB
  • After compression 160.4 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. Sierraoncology.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (19%)

Requests Now

48

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sierraoncology. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

sierraoncology.com

sierraoncology.com

49 ms

www.gsk.com

www.gsk.com

44 ms

91 ms

DependencyHandler.axd

DependencyHandler.axd

34 ms

DependencyHandler.axd

DependencyHandler.axd

128 ms

utag.js

utag.js

126 ms

icon-switch-info.svg

icon-switch-info.svg

67 ms

icon-sprite.svg

icon-sprite.svg

67 ms

gif_logo_opt.gif

gif_logo_opt.gif

90 ms

icon-nav-arrow-down-white.svg

icon-nav-arrow-down-white.svg

85 ms

icon-nav-arrow-grey.svg

icon-nav-arrow-grey.svg

78 ms

gsk_tech_human_image_6k.jpg

gsk_tech_human_image_6k.jpg

81 ms

sddefault-2.jpg

sddefault-2.jpg

117 ms

vaccine-manufacturing-production-line-2.jpg

vaccine-manufacturing-production-line-2.jpg

117 ms

tony-16x9.jpg

tony-16x9.jpg

115 ms

web03-header-stvg_2_2022_port_5_hess_nav.jpg

web03-header-stvg_2_2022_port_5_hess_nav.jpg

89 ms

navthumb_stvg_03_2022_port_32_eagle_orange-1.jpg

navthumb_stvg_03_2022_port_32_eagle_orange-1.jpg

301 ms

web16-header-stvg_2_2022_port_13_hess_nav.jpg

web16-header-stvg_2_2022_port_13_hess_nav.jpg

120 ms

gsk_texture_fluid_03_a_cmyk_web-size_nav.jpg

gsk_texture_fluid_03_a_cmyk_web-size_nav.jpg

290 ms

ware_3_2022_prodassmb_28_hess_nav.jpeg

ware_3_2022_prodassmb_28_hess_nav.jpeg

295 ms

ware_3_2022_prodqc_14_hess.jpeg

ware_3_2022_prodqc_14_hess.jpeg

300 ms

up_10_2022_lab_023_hess_jpg.png

up_10_2022_lab_023_hess_jpg.png

299 ms

icon-external-white.svg

icon-external-white.svg

291 ms

pinch-left-mask.svg

pinch-left-mask.svg

291 ms

twist-right-mask.svg

twist-right-mask.svg

293 ms

patientinnaturerespisustainabilityshutterstock.jpg

patientinnaturerespisustainabilityshutterstock.jpg

304 ms

fold.svg

fold.svg

295 ms

icon-external-alt.svg

icon-external-alt.svg

296 ms

twist-mask.svg

twist-mask.svg

298 ms

viiv_nairobi029_24938.jpg

viiv_nairobi029_24938.jpg

302 ms

remission-update.jpg

remission-update.jpg

302 ms

stvg_4_2022_datacentre_17_hess_26942.jpg

stvg_4_2022_datacentre_17_hess_26942.jpg

302 ms

gettyimages-1301122401.jpg

gettyimages-1301122401.jpg

301 ms

gsk_lon_09_2023_patient_2_moran_2173.jpg

gsk_lon_09_2023_patient_2_moran_2173.jpg

311 ms

robot-arm.jpg

robot-arm.jpg

304 ms

web01-secondary-8-gsk_03_2022_port_8_eagle_light.jpg

web01-secondary-8-gsk_03_2022_port_8_eagle_light.jpg

307 ms

web01-secondary-9-gskh_2_2022_smtspc_37_hess.jpg

web01-secondary-9-gskh_2_2022_smtspc_37_hess.jpg

303 ms

web01-secondary-10-gskh_3_2022_port_33_hess.jpg

web01-secondary-10-gskh_3_2022_port_33_hess.jpg

305 ms

stvg_2_2022_smtlab_17_hess.jpg

stvg_2_2022_smtlab_17_hess.jpg

309 ms

pinch-white-bg-dark.svg

pinch-white-bg-dark.svg

307 ms

pinch-white-bg.svg

pinch-white-bg.svg

301 ms

web14-header-hct_5328.jpg

web14-header-hct_5328.jpg

251 ms

web15-header-gsk_rix_24_10_18_p_d2_s1_128.jpg

web15-header-gsk_rix_24_10_18_p_d2_s1_128.jpg

246 ms

rainbow-gsk-irvine.jpg

rainbow-gsk-irvine.jpg

6052 ms

web16-header-stvg_2_2022_port_13_hess.jpg

web16-header-stvg_2_2022_port_13_hess.jpg

235 ms

ware_3_2022_prodqc_38_hess-1.jpg

ware_3_2022_prodqc_38_hess-1.jpg

232 ms

ware_3_2022_prodqc_21_hess-1.jpg

ware_3_2022_prodqc_21_hess-1.jpg

229 ms

icon-continue.svg

icon-continue.svg

225 ms

back-to-to-arrow.svg

back-to-to-arrow.svg

225 ms

gsk-logo.png

gsk-logo.png

200 ms

icon-rss-white.svg

icon-rss-white.svg

200 ms

GSK-Regular.woff

GSK-Regular.woff

5802 ms

GSK-Light.woff

GSK-Light.woff

29 ms

GSK-Bold.woff

GSK-Bold.woff

30 ms

icomoon.woff

icomoon.woff

31 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

4 ms

Accessibility Review

sierraoncology.com accessibility score

94

Accessibility Issues

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.

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

Low

No form fields have multiple labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

sierraoncology.com best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

sierraoncology.com SEO score

79

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

High

robots.txt is not valid

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

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 Sierraoncology.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 Sierraoncology.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

sierraoncology.com

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