565 ms in total
88 ms
351 ms
126 ms
Click here to check amazing Celiac Disease Center Columbia content for United States. Otherwise, check out these important facts you probably never knew about celiacdiseasecenter.columbia.edu
Visit celiacdiseasecenter.columbia.eduWe analyzed Celiacdiseasecenter.columbia.edu page load time and found that the first response time was 88 ms and then it took 477 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.
celiacdiseasecenter.columbia.edu performance score
name
value
score
weighting
Value3.7 s
30/100
10%
Value14.3 s
0/100
25%
Value5.7 s
51/100
10%
Value40 ms
100/100
30%
Value0.023
100/100
15%
Value10.1 s
26/100
10%
88 ms
57 ms
64 ms
66 ms
61 ms
Our browser made a total of 40 requests to load all elements on the main page. We found that 98% of them (39 requests) were addressed to the original Celiacdiseasecenter.columbia.edu, 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (97 ms) belongs to the original domain Celiacdiseasecenter.columbia.edu.
Page size can be reduced by 491.6 kB (33%)
1.5 MB
987.1 kB
In fact, the total size of Celiacdiseasecenter.columbia.edu main page is 1.5 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. 40% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 36.2 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. 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 36.2 kB or 80% of the original size.
Potential reduce by 193.3 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. Obviously, Celiac Disease Center Columbia needs image optimization as it can save up to 193.3 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 166.3 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 166.3 kB or 74% of the original size.
Potential reduce by 95.8 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. Celiacdiseasecenter.columbia.edu needs all CSS files to be minified and compressed as it can save up to 95.8 kB or 82% of the original size.
Number of requests can be reduced by 14 (37%)
38
24
The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Celiac Disease Center 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 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
celiacdiseasecenter.columbia.edu
88 ms
css_nLnURQV-OJYJJPpa_tvZDRiAtlfGhVDzO2v5EKMdlzI.css
57 ms
css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css
64 ms
css_CrzvGMJbtxeaSCuXtFaunebAw6bEZ5cKzprVrL9BEXQ.css
66 ms
css_gsfEVlInrGq83weHPLNjHC7re_VidBxbjW85jamEoII.css
61 ms
css_-TVAVRDXDjgoPj6lvYyLl93gPgAYqKbqSzjG6kPegh8.css
67 ms
css_7G7ywrPEbCm7cu72T-_dqg8TFdKRBPsiMIYoczwO1bc.css
80 ms
jquery.min.js
34 ms
js_3TykeRWpejhD4-J3vdlaNXdULg9xhOZhbsppK0o2bUs.js
97 ms
js_CXg6DUg4nF67sYw9vPIZU1qTUFoWfzraJYQnsBgXzUU.js
69 ms
js_eBm5BPXH3vOSRKRK6d812lhQvJ_VToIlh7oDFTVn-TU.js
68 ms
js_G_f1kgebA1rx_hkMKNUhUcFs8kvCb81xrOJFz7GrdD0.js
69 ms
seckit.document_write.js
27 ms
seckit.no_body.css
29 ms
js_OfxQSkS2f8bv-f_HyqF1KrKee1Y4F19JzuhKJM8jdHE.js
68 ms
js_ODZAd0RVRoCVdFm1u-XH0lt7lBINFaUuCl2BbTLNOvI.js
70 ms
js_7Ukqb3ierdBEL0eowfOKzTkNu-Le97OPm-UqTS5NENU.js
67 ms
20141559.jpg
12 ms
20141617_0.jpg
19 ms
slide11_0.jpg
71 ms
CDC%20Home%20page4.jpg
31 ms
logo%20celiac.png
10 ms
footer1.jpg
27 ms
footer1_tab.jpg
30 ms
footer2.jpg
38 ms
footer2_tab.jpg
31 ms
footer3.jpg
94 ms
footer3_tab.jpg
38 ms
logo_columbia.png
37 ms
select-arrow.gif
85 ms
search2_0.png
77 ms
join_us.png
39 ms
faceb.png
40 ms
tweeter.png
42 ms
youtube.png
43 ms
resize-handle.png
24 ms
grid-toggle.png
27 ms
block-toggle.png
35 ms
learn.jpg
39 ms
SourceSansPro-Regular.ttf
49 ms
celiacdiseasecenter.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
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
celiacdiseasecenter.columbia.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
celiacdiseasecenter.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
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
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 Celiacdiseasecenter.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 Celiacdiseasecenter.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.
celiacdiseasecenter.columbia.edu
Open Graph description is not detected on the main page of Celiac Disease Center 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: