1.4 sec in total
30 ms
712 ms
671 ms
Visit hcs.harvard.edu now to see the best up-to-date Hcs Harvard content for United States and also check out these interesting facts you probably never knew about hcs.harvard.edu
Harvard College's Premier Computer Science Organization
Visit hcs.harvard.eduWe analyzed Hcs.harvard.edu page load time and found that the first response time was 30 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
hcs.harvard.edu performance score
name
value
score
weighting
Value2.8 s
56/100
10%
Value12.4 s
0/100
25%
Value3.2 s
92/100
10%
Value90 ms
99/100
30%
Value0.34
33/100
15%
Value5.4 s
72/100
10%
30 ms
237 ms
69 ms
21 ms
70 ms
Our browser made a total of 33 requests to load all elements on the main page. We found that 42% of them (14 requests) were addressed to the original Hcs.harvard.edu, 15% (5 requests) were made to Fonts.gstatic.com and 12% (4 requests) were made to Calendar.google.com. The less responsive or slowest element that took the longest time to load (237 ms) belongs to the original domain Hcs.harvard.edu.
Page size can be reduced by 335.0 kB (40%)
835.3 kB
500.3 kB
In fact, the total size of Hcs.harvard.edu main page is 835.3 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 373.0 kB which makes up the majority of the site volume.
Potential reduce by 13.4 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 13.4 kB or 69% of the original size.
Potential reduce by 4.3 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. Hcs Harvard images are well optimized though.
Potential reduce by 177.4 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 177.4 kB or 65% of the original size.
Potential reduce by 140.0 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. Hcs.harvard.edu needs all CSS files to be minified and compressed as it can save up to 140.0 kB or 81% of the original size.
Number of requests can be reduced by 16 (70%)
23
7
The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hcs Harvard. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
hcs.harvard.edu
30 ms
www.hcs.harvard.edu
237 ms
css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css
69 ms
css_MlRhgW5txCBkG_1z4UqkvOFaKIDKjh9PxEskC9bd-qI.css
21 ms
css_MnXiytJtb186Ydycnpwpw34cuUsHaKc80ey5LiQXhSY.css
70 ms
css
27 ms
css_TqaPGd44K8XzwUllQgrwE7xIAMa0O0Zk678RoTOcqVQ.css
66 ms
bootstrap.min.css
7 ms
css_B4quuKylobI4EwDph3LFU8VhLEGpEs4mzYzJddmFwjk.css
20 ms
jquery.min.js
32 ms
js_3TykeRWpejhD4-J3vdlaNXdULg9xhOZhbsppK0o2bUs.js
47 ms
js_I8yX6RYPZb7AtMcDUA3QKDZqVkvEn35ED11_1i7vVpc.js
31 ms
bootstrap.min.js
15 ms
js_Vc3_1eOjtZITQI4deabOEOgp7cxdpem5E4k6MVttc-M.js
28 ms
analytics.js
65 ms
embed
57 ms
logo.min.svg
34 ms
splash.jpg
41 ms
arrow.svg
14 ms
cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff
36 ms
k3k702ZOKiLJc3WVjuplzHhCUOGz7vYGh680lGh-uXM.woff
50 ms
gk5FxslNkTTHtojXrkp-xONSK5BxN3NFS4EJkViHIqo.woff
76 ms
glyphicons-halflings-regular.woff
12 ms
PRmiXeptR36kaC0GEAetxh_xHqYgAV9Bl_ZQbYUxnQU.woff
72 ms
PRmiXeptR36kaC0GEAetxjqR_3kx9_hJXbbyU8S6IN0.woff
75 ms
embed
38 ms
linkid.js
20 ms
collect
11 ms
embed
94 ms
f7e12ba16863d79ebc50b5ad512d0dd5embedcompiled_fastui.css
11 ms
f7e12ba16863d79ebc50b5ad512d0dd5embedcompiled__en.js
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client.js
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cb=gapi.loaded_0
39 ms
hcs.harvard.edu accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
Links do not have a discernible name
hcs.harvard.edu 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
hcs.harvard.edu 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
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hcs.harvard.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 Hcs.harvard.edu 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.
hcs.harvard.edu
Open Graph description is not detected on the main page of Hcs Harvard. 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: