Report Summary

  • 42

    Performance

    Renders faster than
    62% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

precisioncancermedicine.org

Precision Cancer Medicine and Profile at Dana-Farber | Dana-Farber Cancer Institute

Page Load Speed

3.2 sec in total

First Response

1.1 sec

Resources Loaded

1.5 sec

Page Rendered

639 ms

precisioncancermedicine.org screenshot

About Website

Click here to check amazing Precision Cancer Medicine content. Otherwise, check out these important facts you probably never knew about precisioncancermedicine.org

Dive into the details of the groundbreaking cancer research being conducted at Dana-Farber, a leader in cancer research and t

Visit precisioncancermedicine.org

Key Findings

We analyzed Precisioncancermedicine.org page load time and found that the first response time was 1.1 sec and then it took 2.2 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

precisioncancermedicine.org performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value8.0 s

21/100

10%

TBT (Total Blocking Time)

Value340 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value0.11

87/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

precisioncancermedicine.org

1063 ms

precision-cancer-medicine

23 ms

css

75 ms

css_JoP2le2SFV-p8ytbUbYLCj-HIp2HNASnqYGtvgf1sDM.css

39 ms

css_INqKuzJk40i4KgCwcAEyITx3UcFMBx5_eljuFk00x4s.css

26 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Precisioncancermedicine.org, 44% (15 requests) were made to Dfci.widen.net and 26% (9 requests) were made to Dana-farber.org. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Precisioncancermedicine.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (45%)

Content Size

2.5 MB

After Optimization

1.4 MB

In fact, the total size of Precisioncancermedicine.org main page is 2.5 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. Images take 918.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 206.3 kB

  • Original 253.1 kB
  • After minification 250.6 kB
  • After compression 46.9 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. 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 206.3 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 63.5 kB

  • Original 918.8 kB
  • After minification 855.3 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. Precision Cancer Medicine images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 68.8 kB

  • Original 464.0 kB
  • After minification 464.0 kB
  • After compression 395.3 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 68.8 kB or 15% of the original size.

CSS Optimization

-91%

Potential reduce by 781.3 kB

  • Original 857.2 kB
  • After minification 834.7 kB
  • After compression 75.9 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. Precisioncancermedicine.org needs all CSS files to be minified and compressed as it can save up to 781.3 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (33%)

Requests Now

30

After Optimization

20

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Precision Cancer Medicine. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

precisioncancermedicine.org accessibility score

77

Accessibility Issues

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

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 IDs are not unique

Best Practices

precisioncancermedicine.org best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

precisioncancermedicine.org SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Precisioncancermedicine.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 Precisioncancermedicine.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 data is detected on the main page of Precision Cancer Medicine. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: