4.9 sec in total
156 ms
4 sec
819 ms
Visit crf.org now to see the best up-to-date CRF content for South Korea and also check out these interesting facts you probably never knew about crf.org
The Cardiovascular Research Foundation (CRF) is an independent, academically focused nonprofit organization dedicated to improving the survival and quality of life for people with cardiovascular disea...
Visit crf.orgWe analyzed Crf.org page load time and found that the first response time was 156 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
crf.org performance score
name
value
score
weighting
Value4.8 s
12/100
10%
Value5.6 s
18/100
25%
Value5.7 s
51/100
10%
Value690 ms
43/100
30%
Value0
100/100
15%
Value11.6 s
18/100
10%
156 ms
2100 ms
227 ms
151 ms
153 ms
Our browser made a total of 106 requests to load all elements on the main page. We found that 80% of them (85 requests) were addressed to the original Crf.org, 4% (4 requests) were made to Google-analytics.com and 3% (3 requests) were made to Fast.fonts.net. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Crf.org.
Page size can be reduced by 1.0 MB (36%)
2.9 MB
1.9 MB
In fact, the total size of Crf.org main page is 2.9 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 1.6 MB which makes up the majority of the site volume.
Potential reduce by 83.7 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 14.6 kB, which is 15% 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 83.7 kB or 84% of the original size.
Potential reduce by 43.5 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. CRF images are well optimized though.
Potential reduce by 566.0 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 566.0 kB or 70% of the original size.
Potential reduce by 354.5 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. Crf.org needs all CSS files to be minified and compressed as it can save up to 354.5 kB or 89% of the original size.
Number of requests can be reduced by 55 (55%)
100
45
The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CRF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
crf.org
156 ms
www.crf.org
2100 ms
jquery.min.js
227 ms
jquery-migrate-1.2.1.min.js
151 ms
jquery.easing.1.3.js
153 ms
modernizr-2.6.2.min.js
154 ms
html5shiv.js
152 ms
respond.min.js
153 ms
responsive-tabs.js
222 ms
jquery-ui-1.10.4.custom.min.js
450 ms
bootstrap.min.js
256 ms
bootstrap.css
314 ms
animate.css
257 ms
global.css
295 ms
settings.css
298 ms
flexslider.css
297 ms
a4ac459a-8f72-483a-8793-1f5178c769c7.css
143 ms
font-awesome.min.css
44 ms
cycle.css
359 ms
global_conference.css
360 ms
home_site_crf.css
362 ms
global_site_crf.css
378 ms
global.js
381 ms
jquery.cycle2.min.js
431 ms
Swipe-cycle-fix.js
431 ms
home_site_crf.js
434 ms
smoothDivScroll.css
487 ms
jquery.mousewheel.min.js
488 ms
jquery.kinetic.min.js
502 ms
jquery.smoothdivscroll-1.3-min.js
503 ms
mod_meetings.css
506 ms
finder.css
505 ms
curvycorners.src.js
525 ms
transmenu.js
526 ms
gpt.js
18 ms
closearrow.png
82 ms
meeting-icon02.png
89 ms
meeting-icon05.png
82 ms
meeting-icon06.png
87 ms
meeting-icon07.png
82 ms
meeting-icon09.png
83 ms
CRF_LOGO_300x46.png
154 ms
CRF_LOGO_91x29.png
155 ms
CRF_LOGO_405x63.png
154 ms
skirball_circle01.png
446 ms
ctc_circle01.png
451 ms
cfe_circle01.png
450 ms
skirball-2-logo.png
287 ms
ctc-3-logo.png
285 ms
cfe-4-logo.png
285 ms
donateBtn.jpg
301 ms
crf-home-Skirball.png
371 ms
crf-home-clinic-trials.png
373 ms
crf-home-edu.png
446 ms
crf-home-tct.png
517 ms
crf-home-tctmd-new.png
521 ms
meetings-01_1.png
515 ms
blank-meetings-icon.png
517 ms
crf-meetings-icon.png
521 ms
MartinBLeon.png
521 ms
GreggWStone.png
587 ms
Jack_Lewin.png
589 ms
GarySMintz.png
661 ms
OriBenYehuda.png
591 ms
JuanFGranada.png
594 ms
GeorgeDDangas.png
595 ms
PhilippeGenereux.png
660 ms
Rebecca_Hahn.png
661 ms
GregLKaluza.png
664 ms
Ajay_Kirtane.png
668 ms
gtm.js
34 ms
AkikoMaehara.png
668 ms
pubads_impl_82.js
23 ms
1eaf27c0-f4de-4273-9f4c-1b3236ad2f3c.woff
37 ms
container.html
18 ms
RoxanaMehran.png
661 ms
Jim_Min.png
734 ms
search-icon.png
661 ms
expand-menu-icon.png
661 ms
collapse-menu-icon.png
666 ms
analytics.js
38 ms
conversion_async.js
40 ms
twitter-icon.png
639 ms
ads
132 ms
facebook-icon.png
660 ms
linkedin-icon.png
661 ms
ga.js
17 ms
collect
140 ms
116 ms
collect
92 ms
search-icon-sm.png
626 ms
CRFHeart
76 ms
__utm.gif
42 ms
6727461132055782606
78 ms
b993da84-c1f6-474a-8f00-8aa797b3de8f.woff
54 ms
x.gif
540 ms
whiteleft-off.gif
539 ms
osd.js
29 ms
CRF-homepage-news-slider_02.jpg
816 ms
skirball-2.jpg
584 ms
68 ms
ctc-3.jpg
657 ms
cfe-4.jpg
664 ms
donateBG.jpg
454 ms
meeting-back_00.jpg
752 ms
pd.js
4 ms
crf.org accessibility score
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
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
crf.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
crf.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Crf.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 Crf.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.
crf.org
Open Graph description is not detected on the main page of CRF. 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: