1.7 sec in total
357 ms
1.2 sec
154 ms
Click here to check amazing Chem Psu content for United States. Otherwise, check out these important facts you probably never knew about chem.psu.edu
The Department of Chemistry at Penn State offers excellence in the chemical sciences through a vibrant and collaborative academic community.
Visit chem.psu.eduWe analyzed Chem.psu.edu page load time and found that the first response time was 357 ms and then it took 1.3 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.
chem.psu.edu performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value47.4 s
0/100
25%
Value10.8 s
6/100
10%
Value640 ms
47/100
30%
Value0.028
100/100
15%
Value27.8 s
0/100
10%
357 ms
78 ms
71 ms
73 ms
72 ms
Our browser made a total of 45 requests to load all elements on the main page. We found that 96% of them (43 requests) were addressed to the original Chem.psu.edu, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (417 ms) belongs to the original domain Chem.psu.edu.
Page size can be reduced by 122.3 kB (24%)
513.0 kB
390.7 kB
In fact, the total size of Chem.psu.edu main page is 513.0 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. 35% of websites need less resources to load. Images take 337.3 kB which makes up the majority of the site volume.
Potential reduce by 28.0 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. This page needs HTML code to be minified as it can gain 8.8 kB, which is 25% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 28.0 kB or 80% of the original size.
Potential reduce by 7.3 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. Chem Psu images are well optimized though.
Potential reduce by 87.1 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 87.1 kB or 62% of the original size.
Number of requests can be reduced by 28 (64%)
44
16
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem Psu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.
chem.psu.edu
357 ms
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collective.js.jqueryui.custom.min-cachekey-1e67ef917df019810af8448980fb6b88.js
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chem.psu.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
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
chem.psu.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
Browser errors were logged to the console
Page has valid source maps
chem.psu.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 Chem.psu.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 Chem.psu.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.
chem.psu.edu
Open Graph description is not detected on the main page of Chem Psu. 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: