Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

chalk.uchicago.edu

Courses at UChicago | Digital tools for teaching and learning

Page Load Speed

426 ms in total

First Response

140 ms

Resources Loaded

286 ms

Page Rendered

0 ms

chalk.uchicago.edu screenshot

About Website

Click here to check amazing Chalk UChicago content for United States. Otherwise, check out these important facts you probably never knew about chalk.uchicago.edu

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Key Findings

We analyzed Chalk.uchicago.edu page load time and found that the first response time was 140 ms and then it took 286 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

chalk.uchicago.edu performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value19.7 s

0/100

25%

SI (Speed Index)

Value7.9 s

22/100

10%

TBT (Total Blocking Time)

Value2,050 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

Network Requests Diagram

chalk.uchicago.edu

140 ms

chalk.uchicago.edu

147 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Chalk.uchicago.edu and no external sources were called. The less responsive or slowest element that took the longest time to load (147 ms) belongs to the original domain Chalk.uchicago.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 241 B (44%)

Content Size

553 B

After Optimization

312 B

In fact, the total size of Chalk.uchicago.edu main page is 553 B. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 553 B which makes up the majority of the site volume.

HTML Optimization

-44%

Potential reduce by 241 B

  • Original 553 B
  • After minification 553 B
  • After compression 312 B

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 241 B or 44% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Review

chalk.uchicago.edu accessibility score

93

Accessibility Issues

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

High

button, link, and menuitem elements do not have accessible names.

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

Links do not have a discernible name

Best Practices

chalk.uchicago.edu best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

chalk.uchicago.edu SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chalk.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 Chalk.uchicago.edu main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Chalk UChicago. 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: