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clio.columbia.edu screenshot

Report Summary

  • 96

    Performance

    Renders faster than
    94% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

clio.columbia.edu

CLIO

Page Load Speed

510 ms in total

First Response

80 ms

Resources Loaded

335 ms

Page Rendered

95 ms

clio.columbia.edu screenshot

About Website

Welcome to clio.columbia.edu homepage info - get ready to check CLIO Columbia best content for United States right away, or after learning these important things about clio.columbia.edu

Visit clio.columbia.edu

Key Findings

We analyzed Clio.columbia.edu page load time and found that the first response time was 80 ms and then it took 430 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.

Performance Metrics

clio.columbia.edu performance score

96

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

clio.columbia.edu

80 ms

clio.columbia.edu

107 ms

application-ec431d08a98904573ca2942aa8f44a2d9998cf6416b08d01859c00b393e0500c.css

25 ms

crown-bts-24x24-be33a361171b9adedb8c7dca2cacc27d6b6c4ba805d8d05659501fca6b19162f.png

51 ms

application-07c9c2aeacc9fbeb245b1faf5dc56baa47bb4728945984b3643ff7de4692a16b.js

51 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that 82% of them (9 requests) were addressed to the original Clio.columbia.edu, 18% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (107 ms) belongs to the original domain Clio.columbia.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 293.8 kB (72%)

Content Size

405.3 kB

After Optimization

111.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Clio.columbia.edu main page is 405.3 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. 25% of websites need less resources to load. CSS take 200.1 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 7.8 kB

  • Original 10.8 kB
  • After minification 10.6 kB
  • After compression 3.1 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 7.8 kB or 72% of the original size.

Image Optimization

-15%

Potential reduce by 199 B

  • Original 1.3 kB
  • After minification 1.1 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, CLIO Columbia needs image optimization as it can save up to 199 B or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 118.7 kB

  • Original 193.1 kB
  • After minification 191.4 kB
  • After compression 74.4 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 118.7 kB or 61% of the original size.

CSS Optimization

-84%

Potential reduce by 167.1 kB

  • Original 200.1 kB
  • After minification 198.7 kB
  • After compression 33.0 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. Clio.columbia.edu needs all CSS files to be minified and compressed as it can save up to 167.1 kB or 84% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CLIO Columbia. According to our analytics all requests are already optimized.

Network Requests Diagram

clio.columbia.edu

clio.columbia.edu

80 ms

clio.columbia.edu

clio.columbia.edu

107 ms

application-ec431d08a98904573ca2942aa8f44a2d9998cf6416b08d01859c00b393e0500c.css

application-ec431d08a98904573ca2942aa8f44a2d9998cf6416b08d01859c00b393e0500c.css

25 ms

crown-bts-24x24-be33a361171b9adedb8c7dca2cacc27d6b6c4ba805d8d05659501fca6b19162f.png

crown-bts-24x24-be33a361171b9adedb8c7dca2cacc27d6b6c4ba805d8d05659501fca6b19162f.png

51 ms

application-07c9c2aeacc9fbeb245b1faf5dc56baa47bb4728945984b3643ff7de4692a16b.js

application-07c9c2aeacc9fbeb245b1faf5dc56baa47bb4728945984b3643ff7de4692a16b.js

51 ms

ajax-loader-c6f6eb10a4472f02adf0f74f0805afb04a0bd0f4644a1eeff94d9b36d2ffeaf6.gif

ajax-loader-c6f6eb10a4472f02adf0f74f0805afb04a0bd0f4644a1eeff94d9b36d2ffeaf6.gif

49 ms

ds_pointer-cf592d52f9e68bc948eb89fff45d174ce25fe67bc39080736fb689355e6d3f49.png

ds_pointer-cf592d52f9e68bc948eb89fff45d174ce25fe67bc39080736fb689355e6d3f49.png

51 ms

analytics.js

analytics.js

17 ms

trajanpro-regular-webfont-709b1b6b9ac8f1a25706e71cab416948199c819cf9f0290f850861fd262864cd.woff

trajanpro-regular-webfont-709b1b6b9ac8f1a25706e71cab416948199c819cf9f0290f850861fd262864cd.woff

33 ms

glyphicons-halflings-regular-a26394f7ede100ca118eff2eda08596275a9839b959c226e15439557a5a80742.woff

glyphicons-halflings-regular-a26394f7ede100ca118eff2eda08596275a9839b959c226e15439557a5a80742.woff

32 ms

collect

collect

11 ms

Accessibility Review

clio.columbia.edu accessibility score

83

Accessibility Issues

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

High

Buttons do not have an accessible name

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.

Best Practices

clio.columbia.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

clio.columbia.edu SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

Social Sharing Optimization

clio.columbia.edu

Open Graph description is not detected on the main page of CLIO 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: