578 ms in total
59 ms
394 ms
125 ms
Visit rockefeller.edu now to see the best up-to-date Rockefeller content for United States and also check out these interesting facts you probably never knew about rockefeller.edu
Visit rockefeller.eduWe analyzed Rockefeller.edu page load time and found that the first response time was 59 ms and then it took 519 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.
rockefeller.edu performance score
name
value
score
weighting
Value5.5 s
6/100
10%
Value12.8 s
0/100
25%
Value14.3 s
1/100
10%
Value2,630 ms
4/100
30%
Value0.033
100/100
15%
Value25.6 s
0/100
10%
59 ms
50 ms
20 ms
41 ms
74 ms
Our browser made a total of 72 requests to load all elements on the main page. We found that 97% of them (70 requests) were addressed to the original Rockefeller.edu, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (76 ms) belongs to the original domain Rockefeller.edu.
Page size can be reduced by 367.9 kB (20%)
1.9 MB
1.5 MB
In fact, the total size of Rockefeller.edu main page is 1.9 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. 55% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 46.2 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 6.7 kB, which is 12% 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 46.2 kB or 82% of the original size.
Potential reduce by 46.7 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. Rockefeller images are well optimized though.
Potential reduce by 257.6 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 257.6 kB or 69% of the original size.
Potential reduce by 17.4 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. Rockefeller.edu needs all CSS files to be minified and compressed as it can save up to 17.4 kB or 82% of the original size.
Number of requests can be reduced by 28 (40%)
70
42
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rockefeller. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
rockefeller.edu
59 ms
www.rockefeller.edu
50 ms
hpStyle.css
20 ms
jquery_core.js
41 ms
jquery_ui.js
74 ms
jquery.niftycube.js
18 ms
jquery.easing.1.3.js
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jquery.hrzAccordion.js
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h_slider.js
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hrzAccordion.css
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v_slider.css
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ga.js
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niftyCorners.css
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go.gif
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btn-donate.gif
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headerRU.gif
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nav_bg.gif
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headerImg20.jpg
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newswire_top.gif
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newswire_mid.gif
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newswire_content_bg.gif
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newswire_bottom.gif
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vs-cover.png
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campus2.1432672449.jpg
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fac_recruit_oct23.1445629312.jpg
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ru_off.png
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title1.gif
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arrow_pre.png
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arrow_next.png
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downloadbrochure.gif
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apply.jpg
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title2.gif
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liststyle.gif
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bg.png
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ru_off_left.png
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ru_last_round.gif
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rockefeller.edu 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
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
rockefeller.edu best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
rockefeller.edu SEO score
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
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rockefeller.edu 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 Rockefeller.edu 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.
rockefeller.edu
Open Graph description is not detected on the main page of Rockefeller. 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: