Tools & Wizards About Us
iopenshell.usc.edu screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

iopenshell.usc.edu

Laboratory for Theoretical Studies of Electronic Structure and Spectroscopy of Open-Shell and Electronically Excited Species - iOpenShell

Page Load Speed

1.8 sec in total

First Response

324 ms

Resources Loaded

1.3 sec

Page Rendered

201 ms

iopenshell.usc.edu screenshot

About Website

Click here to check amazing IOpenShell Usc content for United States. Otherwise, check out these important facts you probably never knew about iopenshell.usc.edu

Visit iopenshell.usc.edu

Key Findings

We analyzed Iopenshell.usc.edu page load time and found that the first response time was 324 ms and then it took 1.5 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.

Performance Metrics

iopenshell.usc.edu performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.9 s

100/100

10%

LCP (Largest Contentful Paint)

Value36.2 s

0/100

25%

SI (Speed Index)

Value3.4 s

89/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.331

34/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

iopenshell.usc.edu

324 ms

iopenshell.css

212 ms

group_2015-04-08.jpg

614 ms

n3-pes-small.png

305 ms

jpc-cover-condensedphase.jpg

304 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 85% of them (11 requests) were addressed to the original Iopenshell.usc.edu, 15% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (784 ms) belongs to the original domain Iopenshell.usc.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.5 kB (21%)

Content Size

461.5 kB

After Optimization

364.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Iopenshell.usc.edu main page is 461.5 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. Only 5% of websites need less resources to load. Images take 443.1 kB which makes up the majority of the site volume.

HTML Optimization

-63%

Potential reduce by 4.0 kB

  • Original 6.3 kB
  • After minification 6.2 kB
  • After compression 2.3 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 4.0 kB or 63% of the original size.

Image Optimization

-20%

Potential reduce by 88.5 kB

  • Original 443.1 kB
  • After minification 354.6 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, IOpenShell Usc needs image optimization as it can save up to 88.5 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 971 B

  • Original 6.8 kB
  • After minification 6.8 kB
  • After compression 5.9 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 971 B or 14% of the original size.

CSS Optimization

-78%

Potential reduce by 4.0 kB

  • Original 5.2 kB
  • After minification 3.5 kB
  • After compression 1.1 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. Iopenshell.usc.edu needs all CSS files to be minified and compressed as it can save up to 4.0 kB or 78% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IOpenShell Usc. According to our analytics all requests are already optimized.

Network Requests Diagram

iopenshell.usc.edu

iopenshell.usc.edu

324 ms

iopenshell.css

iopenshell.css

212 ms

group_2015-04-08.jpg

group_2015-04-08.jpg

614 ms

n3-pes-small.png

n3-pes-small.png

305 ms

jpc-cover-condensedphase.jpg

jpc-cover-condensedphase.jpg

304 ms

jpc-cover-vinylradical.png

jpc-cover-vinylradical.png

306 ms

urchin.js

urchin.js

21 ms

nsf.png

nsf.png

159 ms

doe.png

doe.png

384 ms

arl.png

arl.png

309 ms

usclas.png

usclas.png

456 ms

__utm.gif

__utm.gif

10 ms

shells-bg.png

shells-bg.png

784 ms

Accessibility Review

iopenshell.usc.edu accessibility score

87

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

iopenshell.usc.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

iopenshell.usc.edu SEO score

67

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Iopenshell.usc.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 Iopenshell.usc.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.

Social Sharing Optimization

iopenshell.usc.edu

Open Graph description is not detected on the main page of IOpenShell Usc. 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: