4.5 sec in total
483 ms
3.9 sec
155 ms
Click here to check amazing Chemistry U Chicago content for United States. Otherwise, check out these important facts you probably never knew about chemistry.uchicago.edu
Chemistry Department - University of Chicago
Visit chemistry.uchicago.eduWe analyzed Chemistry.uchicago.edu page load time and found that the first response time was 483 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
chemistry.uchicago.edu performance score
name
value
score
weighting
Value3.5 s
33/100
10%
Value9.5 s
0/100
25%
Value3.5 s
87/100
10%
Value120 ms
97/100
30%
Value0.079
94/100
15%
Value7.0 s
53/100
10%
483 ms
89 ms
1963 ms
1035 ms
3036 ms
Our browser made a total of 35 requests to load all elements on the main page. We found that 83% of them (29 requests) were addressed to the original Chemistry.uchicago.edu, 11% (4 requests) were made to Google-analytics.com and 3% (1 request) were made to Uchicago.dreamsoftcloud.com. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Chemistry.uchicago.edu.
Page size can be reduced by 321.6 kB (76%)
426.0 kB
104.3 kB
In fact, the total size of Chemistry.uchicago.edu main page is 426.0 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. 15% of websites need less resources to load. Javascripts take 411.0 kB which makes up the majority of the site volume.
Potential reduce by 10.8 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 10.8 kB or 72% of the original size.
Potential reduce by 310.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 310.9 kB or 76% of the original size.
Number of requests can be reduced by 25 (76%)
33
8
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemistry U Chicago. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.
chemistry.uchicago.edu
483 ms
default:lytebox:pager
89 ms
AC_RunActiveContent.js
1963 ms
prototype.js
1035 ms
scriptaculous.js
3036 ms
lytebox.js
2007 ms
synapse.js
54 ms
wz_tooltip.js
100 ms
builder.js
23 ms
effects.js
42 ms
dragdrop.js
47 ms
controls.js
45 ms
slider.js
46 ms
sound.js
24 ms
ga.js
5 ms
analytics.js
15 ms
logo.gif
55 ms
__utm.gif
15 ms
btn_search.gif
53 ms
pw_12574262654f4a1.png
53 ms
bg_events_top.gif
54 ms
ico_calendar.gif
56 ms
bg_events_bottom.gif
55 ms
dreamsoft.gif
56 ms
menu_sep.gif
299 ms
bg_menu.gif
44 ms
collect
15 ms
flash_shadow_left.gif
23 ms
flash_shadow_right.gif
22 ms
bg_content.gif
23 ms
menu2_sep.gif
24 ms
dot.gif
24 ms
bg_footer.gif
24 ms
lucida_calligraphy_italic-webfont.woff
41 ms
collect
72 ms
chemistry.uchicago.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
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
Form elements do not have associated labels
Links do not have a discernible name
chemistry.uchicago.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
chemistry.uchicago.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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemistry.uchicago.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Chemistry.uchicago.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.
chemistry.uchicago.edu
Open Graph description is not detected on the main page of Chemistry U Chicago. 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: