Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

rundanafarber.org

Run With Us to Defy Cancer - Run for Dana-Farber

Page Load Speed

1.8 sec in total

First Response

299 ms

Resources Loaded

1.1 sec

Page Rendered

362 ms

rundanafarber.org screenshot

About Website

Visit rundanafarber.org now to see the best up-to-date Run Dana Farber content for United States and also check out these interesting facts you probably never knew about rundanafarber.org

Help defy cancer by joining thousands of runners, supporters, and volunteers raising money for Dana-Farber Cancer Institute with Run for Dana-Farber.

Visit rundanafarber.org

Key Findings

We analyzed Rundanafarber.org page load time and found that the first response time was 299 ms and then it took 1.5 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

rundanafarber.org performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value10.9 s

6/100

10%

TBT (Total Blocking Time)

Value1,860 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.351

31/100

15%

TTI (Time to Interactive)

Value21.1 s

1/100

10%

Network Requests Diagram

299 ms

yui-min.js

115 ms

modules.js

130 ms

utils.js

133 ms

obs_comp_rollup.js

133 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Rundanafarber.org, 11% (9 requests) were made to Fonts.gstatic.com and 5% (4 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (349 ms) relates to the external source Danafarber.jimmyfund.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 535.6 kB (32%)

Content Size

1.7 MB

After Optimization

1.1 MB

In fact, the total size of Rundanafarber.org main page is 1.7 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. 65% of websites need less resources to load. Images take 919.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 148.2 kB

  • Original 181.5 kB
  • After minification 165.0 kB
  • After compression 33.4 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 148.2 kB or 82% of the original size.

Image Optimization

-8%

Potential reduce by 77.1 kB

  • Original 919.6 kB
  • After minification 842.5 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. Run Dana Farber images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 290.6 kB

  • Original 478.6 kB
  • After minification 476.2 kB
  • After compression 188.0 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 290.6 kB or 61% of the original size.

CSS Optimization

-25%

Potential reduce by 19.7 kB

  • Original 77.5 kB
  • After minification 77.5 kB
  • After compression 57.8 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. Rundanafarber.org needs all CSS files to be minified and compressed as it can save up to 19.7 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (52%)

Requests Now

71

After Optimization

34

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Run Dana Farber. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

rundanafarber.org accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

rundanafarber.org best practices score

58

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

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

rundanafarber.org SEO score

85

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

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rundanafarber.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Rundanafarber.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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