Tools & Wizards About Us
cancertrials.nci.nih.gov screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

cancertrials.nci.nih.gov

Clinical Trials Information for Patients and Caregivers - NCI

Page Load Speed

2.2 sec in total

First Response

116 ms

Resources Loaded

1.3 sec

Page Rendered

744 ms

cancertrials.nci.nih.gov screenshot

About Website

Visit cancertrials.nci.nih.gov now to see the best up-to-date Cancer Trials NCI Nih content for China and also check out these interesting facts you probably never knew about cancertrials.nci.nih.gov

Explains clinical trials, including what they are, why they are important, things to think about when deciding to take part, and questions to ask your doctor.

Visit cancertrials.nci.nih.gov

Key Findings

We analyzed Cancertrials.nci.nih.gov page load time and found that the first response time was 116 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

cancertrials.nci.nih.gov performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value3.9 s

82/100

10%

TBT (Total Blocking Time)

Value640 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0.053

98/100

15%

TTI (Time to Interactive)

Value7.5 s

48/100

10%

Network Requests Diagram

116 ms

clinical-trials

49 ms

launch-5f2a5357bf66.min.js

111 ms

css

326 ms

css_JQyZ9StD4-4I5jikYtL8icbvn1b-f6xMTWUzpXDhKlc.css

19 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Cancertrials.nci.nih.gov, 14% (4 requests) were made to Assets.adobedtm.com and 7% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (365 ms) relates to the external source Cancer.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 119.7 kB (24%)

Content Size

492.8 kB

After Optimization

373.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cancertrials.nci.nih.gov main page is 492.8 kB. 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. Images take 300.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 100.6 kB

  • Original 123.5 kB
  • After minification 102.8 kB
  • After compression 22.9 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 20.7 kB, which is 17% 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 100.6 kB or 81% of the original size.

Image Optimization

-4%

Potential reduce by 11.4 kB

  • Original 300.2 kB
  • After minification 288.7 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. Cancer Trials NCI Nih images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 2.5 kB

  • Original 19.0 kB
  • After minification 18.8 kB
  • After compression 16.5 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 2.5 kB or 13% of the original size.

CSS Optimization

-10%

Potential reduce by 5.1 kB

  • Original 50.1 kB
  • After minification 50.0 kB
  • After compression 45.0 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. Cancertrials.nci.nih.gov has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (43%)

Requests Now

23

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cancer Trials NCI Nih. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

116 ms

clinical-trials

clinical-trials

49 ms

launch-5f2a5357bf66.min.js

launch-5f2a5357bf66.min.js

111 ms

css

css

326 ms

css_JQyZ9StD4-4I5jikYtL8icbvn1b-f6xMTWUzpXDhKlc.css

css_JQyZ9StD4-4I5jikYtL8icbvn1b-f6xMTWUzpXDhKlc.css

19 ms

Common.css

Common.css

26 ms

Minilanding.css

Minilanding.css

18 ms

js_Ze7iuVYYvaNC2iWmS0y3TIxKx1Oc0Lk1t6DqW16KLyM.js

js_Ze7iuVYYvaNC2iWmS0y3TIxKx1Oc0Lk1t6DqW16KLyM.js

95 ms

Common.js

Common.js

94 ms

Minilanding.js

Minilanding.js

58 ms

AppMeasurement.min.js

AppMeasurement.min.js

307 ms

AppMeasurement_Module_ActivityMap.min.js

AppMeasurement_Module_ActivityMap.min.js

308 ms

nci-logo-full.svg

nci-logo-full.svg

188 ms

spanish-clinical-trials-banner.jpg

spanish-clinical-trials-banner.jpg

170 ms

find-clinical-trial-blue-thumb.jpg

find-clinical-trial-blue-thumb.jpg

165 ms

iStock-1055095272.jpg

iStock-1055095272.jpg

170 ms

reviewing-bills-feature-card.jpg

reviewing-bills-feature-card.jpg

354 ms

teenager-and-family-visiting-doctor-wide.jpg

teenager-and-family-visiting-doctor-wide.jpg

355 ms

signing-paper-thumb.jpg

signing-paper-thumb.jpg

352 ms

female-dr-comforting-patient-article.jpg

female-dr-comforting-patient-article.jpg

351 ms

male-doctor-female-patient-thumb.jpg

male-doctor-female-patient-thumb.jpg

352 ms

Clinical%20Trials_Promo_Image_4x3_English.png

Clinical%20Trials_Promo_Image_4x3_English.png

365 ms

svg-sprite-593ecf95.svg

svg-sprite-593ecf95.svg

223 ms

Montserrat-regular.woff

Montserrat-regular.woff

29 ms

Montserrat-700.woff

Montserrat-700.woff

28 ms

o-0IIpQlx3QUlC5A4PNr5TRGSf6M7Q.woff

o-0IIpQlx3QUlC5A4PNr5TRGSf6M7Q.woff

80 ms

o-0NIpQlx3QUlC5A4PNjXhFVZNyHx2pqPA.woff

o-0NIpQlx3QUlC5A4PNjXhFVZNyHx2pqPA.woff

80 ms

4407.js

4407.js

158 ms

RC9956e3e85e694dfeafb5d0e9bc882f46-source.min.js

RC9956e3e85e694dfeafb5d0e9bc882f46-source.min.js

58 ms

Accessibility Review

cancertrials.nci.nih.gov accessibility score

99

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

cancertrials.nci.nih.gov 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

cancertrials.nci.nih.gov SEO score

100

Search Engine Optimization Advices

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 Cancertrials.nci.nih.gov 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 Cancertrials.nci.nih.gov 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

cancertrials.nci.nih.gov

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