1 sec in total
98 ms
385 ms
560 ms
Click here to check amazing Sickle Cell Disease content for India. Otherwise, check out these important facts you probably never knew about sicklecelldisease.org
Official website of Sickle Cell Disease Association of America Inc. Sickle cell disease is an inherited blood disorder that affects red blood cells.
Visit sicklecelldisease.orgWe analyzed Sicklecelldisease.org page load time and found that the first response time was 98 ms and then it took 945 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster. This domain responded with an error, which can significantly jeopardize Sicklecelldisease.org rating and web reputation
sicklecelldisease.org performance score
name
value
score
weighting
Value9.1 s
0/100
10%
Value44.5 s
0/100
25%
Value19.9 s
0/100
10%
Value1,260 ms
19/100
30%
Value0.583
11/100
15%
Value34.7 s
0/100
10%
98 ms
18 ms
31 ms
22 ms
12 ms
Our browser made a total of 90 requests to load all elements on the main page. We found that 94% of them (85 requests) were addressed to the original Sicklecelldisease.org, 3% (3 requests) were made to Google-analytics.com and 2% (2 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (196 ms) belongs to the original domain Sicklecelldisease.org.
Page size can be reduced by 699.2 kB (20%)
3.5 MB
2.8 MB
In fact, the total size of Sicklecelldisease.org main page is 3.5 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. 70% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.
Potential reduce by 35.6 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 35.6 kB or 83% of the original size.
Potential reduce by 437.3 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. Obviously, Sickle Cell Disease needs image optimization as it can save up to 437.3 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 203.4 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 203.4 kB or 73% of the original size.
Potential reduce by 22.8 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. Sicklecelldisease.org needs all CSS files to be minified and compressed as it can save up to 22.8 kB or 82% of the original size.
Number of requests can be reduced by 18 (20%)
88
70
The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sickle Cell Disease. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and as a result speed up the page load time.
sicklecelldisease.org
98 ms
styles.css
18 ms
jquery.min.js
31 ms
jquery.cycle2.min.js
22 ms
scripts.js
12 ms
shadowbox.css
14 ms
shadowbox.js
24 ms
jquery.js
51 ms
thickbox.js
51 ms
thickbox.css
23 ms
jquery.min.js
38 ms
sizzle.js
18 ms
shadowbox-en.js
7 ms
shadowbox-img.js
12 ms
shadowbox-html.js
8 ms
shadowbox-iframe.js
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shadowbox-qt.js
10 ms
shadowbox-wmp.js
13 ms
swfobject.js
16 ms
shadowbox-swf.js
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shadowbox-flv.js
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shadowbox-jquery.js
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whohoo.jpg
196 ms
ga.js
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Dr.%20Whitten.jpg
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Save%20the%20Date%20(2).jpg
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Gene2.jpg
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app-ad-1SMALL-website.jpg
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SMALL%20_SCT-tool-box-hi.jpg
49 ms
Convention_Reg_forWebsite.jpg
72 ms
SCDAI-forWebsite2.jpg
66 ms
bg.jpg
36 ms
logo-scdaa.jpg
40 ms
bg-newsletter-signup.jpg
11 ms
btn-newsletter-join.jpg
36 ms
nav-left-donate.jpg
38 ms
img-donate-callout-223.jpg
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nav-left-about-scdaa.jpg
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novartis-logo.jpg
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2015App-featured-slider.jpg
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EOY-giving-scream%204%20website-01.jpg
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CARS-featured-slider.jpg
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Nelson-Mandela-Greatness-Donate.jpg
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feat-member.jpg
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btn-watch-video.png
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nav-footer-bg.jpg
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nav-footer-div-line.jpg
46 ms
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loadingAnimation.gif
47 ms
sicklecelldisease.org accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
sicklecelldisease.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
sicklecelldisease.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sicklecelldisease.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 Sicklecelldisease.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.
sicklecelldisease.org
Open Graph description is not detected on the main page of Sickle Cell Disease. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: