613 ms in total
106 ms
385 ms
122 ms
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Visit chem.tufts.eduWe analyzed Chem.tufts.edu page load time and found that the first response time was 106 ms and then it took 507 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.
chem.tufts.edu performance score
name
value
score
weighting
Value9.6 s
0/100
10%
Value15.7 s
0/100
25%
Value9.6 s
11/100
10%
Value1,550 ms
13/100
30%
Value0.863
4/100
15%
Value17.4 s
4/100
10%
106 ms
27 ms
76 ms
24 ms
111 ms
Our browser made a total of 34 requests to load all elements on the main page. We found that 94% of them (32 requests) were addressed to the original Chem.tufts.edu, 3% (1 request) were made to Fonts.googleapis.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (111 ms) belongs to the original domain Chem.tufts.edu.
Page size can be reduced by 523.2 kB (28%)
1.8 MB
1.3 MB
In fact, the total size of Chem.tufts.edu main page is 1.8 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 1.4 MB which makes up the majority of the site volume.
Potential reduce by 22.8 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. This page needs HTML code to be minified as it can gain 4.6 kB, which is 15% 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 22.8 kB or 76% of the original size.
Potential reduce by 170.5 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, Chem Tufts needs image optimization as it can save up to 170.5 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 248.9 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 248.9 kB or 81% of the original size.
Potential reduce by 80.9 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. Chem.tufts.edu needs all CSS files to be minified and compressed as it can save up to 80.9 kB or 85% of the original size.
Number of requests can be reduced by 15 (45%)
33
18
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem Tufts. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
chem.tufts.edu
106 ms
default.css
27 ms
main.css
76 ms
css
24 ms
jquery-1.4.4.js
111 ms
jquery-ui.min.js
42 ms
ddmenu.js
43 ms
custom.js
55 ms
jquery.corner.js
58 ms
jquery.jcarousel.min.js
40 ms
jquery.bxSlider.min.js
54 ms
jquery.nivo.slider.pack.js
67 ms
jquery.orbit-1.2.3.min.js
66 ms
jquery.prettyPhoto.js
85 ms
expand.js
71 ms
jquery.cookie.js
84 ms
reset.css
15 ms
prettyPhoto.css
15 ms
bg14.png
22 ms
bg-org.jpg
22 ms
logo.png
39 ms
navSep.png
16 ms
Robbat%20Lab2.jpg
63 ms
student1.jpg
39 ms
Utz%20Lab.jpg
52 ms
Student%20-at-Hood.jpg
66 ms
ThermalVentProbeTests.jpg
65 ms
Walt%20Lab.jpg
76 ms
Shultz%20Lab.jpg
76 ms
Rybak%20Lab.jpg
77 ms
sep.jpg
79 ms
map.png
84 ms
navArrow.png
80 ms
arrows.png
14 ms
chem.tufts.edu accessibility score
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-*] attributes do not match their roles
chem.tufts.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
chem.tufts.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
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chem.tufts.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 Chem.tufts.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.tufts.edu
Open Graph description is not detected on the main page of Chem Tufts. 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: