671 ms in total
78 ms
445 ms
148 ms
Visit ieor.columbia.edu now to see the best up-to-date Ieor Columbia content for United States and also check out these interesting facts you probably never knew about ieor.columbia.edu
Discover Industrial Engineering at Columbia University - leading programs in Business Analytics, Financial Engineering, Machine Learning, Optimization, and more.
Visit ieor.columbia.eduWe analyzed Ieor.columbia.edu page load time and found that the first response time was 78 ms and then it took 593 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
ieor.columbia.edu performance score
name
value
score
weighting
Value3.7 s
30/100
10%
Value3.8 s
56/100
25%
Value6.1 s
45/100
10%
Value980 ms
28/100
30%
Value0.162
72/100
15%
Value14.1 s
9/100
10%
78 ms
31 ms
14 ms
24 ms
54 ms
Our browser made a total of 63 requests to load all elements on the main page. We found that 95% of them (60 requests) were addressed to the original Ieor.columbia.edu, 3% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (121 ms) belongs to the original domain Ieor.columbia.edu.
Page size can be reduced by 432.7 kB (19%)
2.2 MB
1.8 MB
In fact, the total size of Ieor.columbia.edu main page is 2.2 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. 60% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.
Potential reduce by 72.4 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 72.4 kB or 87% of the original size.
Potential reduce by 106.9 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. Ieor Columbia images are well optimized though.
Potential reduce by 137.1 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 137.1 kB or 57% of the original size.
Potential reduce by 116.4 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. Ieor.columbia.edu needs all CSS files to be minified and compressed as it can save up to 116.4 kB or 82% of the original size.
Number of requests can be reduced by 16 (26%)
62
46
The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ieor Columbia. 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 as a result speed up the page load time.
ieor.columbia.edu
78 ms
jquery.min.js
31 ms
jquery.fancybox.pack.js
14 ms
jql.preloader.js
24 ms
css_111f4aef6734fb099913b633f7c26e9e.css
54 ms
js_24a92eb07e0aad928d24a357c35c3ad6.js
70 ms
fade.js
40 ms
js_398c2aecc87e04da04b850d3d8a23fbe.js
40 ms
ga.js
28 ms
engineering_logo3.gif
26 ms
cu-rooftop.png
21 ms
bulletin-rooftop.png
19 ms
directory-rooftop.png
26 ms
ieor960.png
17 ms
search_label.gif
23 ms
people_220-130_3_1.jpg
90 ms
more-link.gif
89 ms
APR_220-130.jpg
91 ms
people_220-130_3_0.jpg
90 ms
feseminar_220-130_8.jpg
92 ms
dro-ieor_220-130_15.png
97 ms
preloader-91.gif
92 ms
admissions.jpg
92 ms
msfe-2_220-130.jpg
94 ms
ms_e_220-130.jpg
94 ms
msor_220.jpg
94 ms
ugrad_220-130.jpg
95 ms
Axioma.png
96 ms
Team_Una_Picture_news_220.jpg
97 ms
IXL_Innovation_Olympics_fa15_0.jpg
98 ms
INFORMS_fa15_220.jpg
96 ms
ELC.png
98 ms
Derman220x130_1.png
99 ms
about_220-130.jpg
99 ms
facultya_220-130.jpg
101 ms
people_220-130.jpg
102 ms
careers_01.jpg
103 ms
twitter.png
105 ms
linkedin.png
109 ms
facebook.jpg
115 ms
icon-calendar.png
116 ms
icon-contact.png
120 ms
icon-news.png
119 ms
jobs_icon.png
121 ms
nodequeue9js.xml
64 ms
__utm.gif
21 ms
tab_corner_bottom.png
79 ms
tab_corner_bottom_active.png
80 ms
dieker-pecase420.jpg
42 ms
IEOR_Newsletter_Spring_2016_vo2.jpg
56 ms
msfe_home-3.jpg
33 ms
ms_e_homelogo-2.jpg
52 ms
msor_home-3.jpg
37 ms
phd_home_0.jpg
57 ms
Career_Development.jpg
64 ms
StraussIEORelmachtoub_news.jpg
61 ms
agrawal-s_720.jpg
63 ms
eship-minor720.jpg
79 ms
2016-30under897_421.jpg
80 ms
goyal-informs_421.jpg
82 ms
tab_corner_banner.png
77 ms
fontawesome-webfont.woff
82 ms
css_869c238b040e2f93646bb55b1c8a10f2.css
16 ms
ieor.columbia.edu accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
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
ieor.columbia.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
ieor.columbia.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
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 Ieor.columbia.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 Ieor.columbia.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.
ieor.columbia.edu
Open Graph description is not detected on the main page of Ieor Columbia. 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: