Access columbia.edu. Columbia University in the City of New York

columbia.edu

37 ms

www.columbia.edu

120 ms

v1

42 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Columbia.edu and no external sources were called. The less responsive or slowest element that took the longest time to load (120 ms) belongs to the original domain Columbia.edu.

Content Size

16.0 MB

After Optimization

14.6 MB

In fact, the total size of Columbia.edu main page is 16.0 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. 15% of websites need less resources to load. Images take 15.9 MB which makes up the majority of the site volume.

HTML Optimization

-59%

Potential reduce by 8.8 kB

Original 14.9 kB
After minification 14.9 kB
After compression 6.1 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. 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 8.8 kB or 59% of the original size.

Image Optimization

-9%

Potential reduce by 1.4 MB

Original 15.9 MB
After minification 14.5 MB

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. Columbia images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 1.2 kB

Original 26.0 kB
After minification 26.0 kB
After compression 24.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 54 B

Original 103.8 kB
After minification 103.8 kB
After compression 103.8 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. Columbia.edu has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Columbia. According to our analytics all requests are already optimized.