2 sec in total
119 ms
1.3 sec
512 ms
Visit cpr.heart.org now to see the best up-to-date CPR Heart content for United States and also check out these interesting facts you probably never knew about cpr.heart.org
First Aid, CPR & Emergency Cardiovascular Care (ECC). Learn more about resuscitation science, training in your community or organization, and other CPR programs.
Visit cpr.heart.orgWe analyzed Cpr.heart.org page load time and found that the first response time was 119 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
cpr.heart.org performance score
name
value
score
weighting
Value3.2 s
44/100
10%
Value7.6 s
4/100
25%
Value8.2 s
20/100
10%
Value2,220 ms
6/100
30%
Value0
100/100
15%
Value18.3 s
3/100
10%
119 ms
397 ms
32 ms
110 ms
15 ms
Our browser made a total of 69 requests to load all elements on the main page. We found that 14% of them (10 requests) were addressed to the original Cpr.heart.org, 70% (48 requests) were made to Static.heart.org and 6% (4 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (438 ms) relates to the external source Static.heart.org.
Page size can be reduced by 1.7 MB (40%)
4.1 MB
2.4 MB
In fact, the total size of Cpr.heart.org main page is 4.1 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 2.1 MB which makes up the majority of the site volume.
Potential reduce by 44.1 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 9.6 kB, which is 18% 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 44.1 kB or 82% of the original size.
Potential reduce by 37.5 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. CPR Heart images are well optimized though.
Potential reduce by 870.2 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 870.2 kB or 73% of the original size.
Potential reduce by 699.4 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. Cpr.heart.org needs all CSS files to be minified and compressed as it can save up to 699.4 kB or 87% of the original size.
Number of requests can be reduced by 41 (63%)
65
24
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CPR Heart. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
cpr.heart.org
119 ms
UCM_473161_CPR-and-ECC.jsp
397 ms
css
32 ms
jquery.dataTables.min.css
110 ms
bootstrap.min.css
15 ms
font-awesome.min.css
27 ms
style.css
238 ms
components.css
257 ms
responsive.css
140 ms
datepicker3.css
154 ms
jquery.js
286 ms
jquery-migrate.min.js
160 ms
jquery-ui-1.10.3.custom.min.js
307 ms
bootstrap.min.js
21 ms
bootstrap-hover-dropdown.min.js
187 ms
bootstrap-datepicker.js
283 ms
jquery.dataTables.min.js
338 ms
jquery.isotope.min.js
304 ms
chosen.jquery.min.js
302 ms
chosen.css
300 ms
jwplayer.js
336 ms
ecc.js
71 ms
ss.js
177 ms
common.js
210 ms
xmlhttp.js
107 ms
uri.js
147 ms
cluster.js
141 ms
jquery.flexslider-min.js
370 ms
jquery.easing.js
369 ms
jquery.carouFredSel.min.js
410 ms
theme-scripts.js
421 ms
view.min.js
380 ms
imagesloaded.js
353 ms
jquery.infinitescroll.min.js
128 ms
jquery.slimscroll.min.js
363 ms
jquery.blockui.min.js
382 ms
jquery.cokie.min.js
380 ms
metronic.js
402 ms
ga-custom.js
21 ms
ecc.css
339 ms
aha-footer-external-responsive.js
372 ms
functions.js
373 ms
analytics.js
48 ms
ucm_480095.jpg
123 ms
ucm_478551.jpg
184 ms
aha_logo_blk_80.png
87 ms
cpr_logo_ecc@2x.png
85 ms
aha_logo2.png
84 ms
aha_logo@2x.png
86 ms
banner_guidelines2015.jpg
181 ms
icon_course.png
87 ms
icon_elearning.png
87 ms
icon_coursecards.png
89 ms
icon_ebooks.png
88 ms
banner_inservice.jpg
201 ms
CPRKit_Widget.jpg
121 ms
CPRFA-Courses_Widget.jpg
438 ms
INN_Widget.jpg
438 ms
survivor.png
201 ms
banner_eccHome.jpg
180 ms
fontawesome-webfont.woff
52 ms
linkid.js
19 ms
collect
18 ms
collect
88 ms
aha-footer-external-responsive.v2.css
50 ms
AHALogo_full_red_blk@2x.png
62 ms
nhc_optimized.png
61 ms
bbb_100px.png
62 ms
comodo_secure.png
156 ms
cpr.heart.org accessibility score
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.
cpr.heart.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
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
cpr.heart.org SEO score
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cpr.heart.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 Cpr.heart.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.
cpr.heart.org
Open Graph description is not detected on the main page of CPR Heart. 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: