Report Summary

  • 8

    Performance

    Renders faster than
    22% 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

  • 91

    SEO

    Google-friendlier than
    71% of websites

ctlt.jhsph.edu

Center for Teaching and Learning | Johns Hopkins | Bloomberg School of Public Health

Page Load Speed

16.9 sec in total

First Response

714 ms

Resources Loaded

16 sec

Page Rendered

190 ms

ctlt.jhsph.edu screenshot

About Website

Visit ctlt.jhsph.edu now to see the best up-to-date Ctlt Jhsph content for United States and also check out these interesting facts you probably never knew about ctlt.jhsph.edu

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Key Findings

We analyzed Ctlt.jhsph.edu page load time and found that the first response time was 714 ms and then it took 16.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

ctlt.jhsph.edu performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value25,580 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.443

21/100

15%

TTI (Time to Interactive)

Value34.6 s

0/100

10%

Network Requests Diagram

714 ms

3A51AA7ED123D374C42807039955FE66.css

11 ms

none.css

23 ms

basic.css

23 ms

rud8eie.js

134 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Ctlt.jhsph.edu, 22% (8 requests) were made to Use.typekit.net and 6% (2 requests) were made to Us1.siteimprove.com. The less responsive or slowest element that took the longest time to load (15 sec) relates to the external source Google-analytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 258.6 kB (61%)

Content Size

427.3 kB

After Optimization

168.7 kB

In fact, the total size of Ctlt.jhsph.edu main page is 427.3 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. 30% of websites need less resources to load. Javascripts take 179.1 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 26.5 kB

  • Original 35.8 kB
  • After minification 35.2 kB
  • After compression 9.3 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 26.5 kB or 74% of the original size.

Image Optimization

-49%

Potential reduce by 80.3 kB

  • Original 163.9 kB
  • After minification 83.6 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, Ctlt Jhsph needs image optimization as it can save up to 80.3 kB or 49% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-62%

Potential reduce by 111.0 kB

  • Original 179.1 kB
  • After minification 165.6 kB
  • After compression 68.1 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 111.0 kB or 62% of the original size.

CSS Optimization

-84%

Potential reduce by 40.8 kB

  • Original 48.5 kB
  • After minification 47.7 kB
  • After compression 7.7 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. Ctlt.jhsph.edu needs all CSS files to be minified and compressed as it can save up to 40.8 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (59%)

Requests Now

29

After Optimization

12

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ctlt Jhsph. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

ctlt.jhsph.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

ARIA IDs are not unique

Best Practices

ctlt.jhsph.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

High

Page has valid source maps

SEO Factors

ctlt.jhsph.edu SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 Ctlt.jhsph.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 Ctlt.jhsph.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

Open Graph description is not detected on the main page of Ctlt Jhsph. 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: