Tools & Wizards About Us
gelfand.case.edu screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 77

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

gelfand.case.edu

The Leonard Gelfand STEM Center – Case Western Reserve University

Page Load Speed

2.4 sec in total

First Response

531 ms

Resources Loaded

1.6 sec

Page Rendered

264 ms

gelfand.case.edu screenshot

About Website

Visit gelfand.case.edu now to see the best up-to-date Gelfand Case content for United States and also check out these interesting facts you probably never knew about gelfand.case.edu

The Leonard Gelfand STEM Center leverages the resources of Case Western Reserve University to engage preK-12 students in activities that introduce them to scientific practices and concepts and inspire...

Visit gelfand.case.edu

Key Findings

We analyzed Gelfand.case.edu page load time and found that the first response time was 531 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

gelfand.case.edu performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

45/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

1/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.067

97/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

gelfand.case.edu

531 ms

main.css

71 ms

nav.js

511 ms

cwru-header.html

159 ms

blank.jpg

102 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 65% of them (17 requests) were addressed to the original Gelfand.case.edu, 19% (5 requests) were made to Case.edu and 8% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (541 ms) belongs to the original domain Gelfand.case.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 25.4 kB (16%)

Content Size

160.0 kB

After Optimization

134.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Gelfand.case.edu main page is 160.0 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. 15% of websites need less resources to load. Images take 109.9 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 8.9 kB

  • Original 12.7 kB
  • After minification 11.6 kB
  • After compression 3.8 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. 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 8.9 kB or 70% of the original size.

Image Optimization

-3%

Potential reduce by 3.0 kB

  • Original 109.9 kB
  • After minification 106.9 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. Gelfand Case images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 21.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-82%

Potential reduce by 13.4 kB

  • Original 16.4 kB
  • After minification 12.1 kB
  • After compression 3.0 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. Gelfand.case.edu needs all CSS files to be minified and compressed as it can save up to 13.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (22%)

Requests Now

23

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gelfand Case. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

gelfand.case.edu

gelfand.case.edu

531 ms

main.css

main.css

71 ms

nav.js

nav.js

511 ms

cwru-header.html

cwru-header.html

159 ms

blank.jpg

blank.jpg

102 ms

LG_Header5.jpg

LG_Header5.jpg

132 ms

GFCT4.jpg

GFCT4.jpg

69 ms

MHJF1.jpg

MHJF1.jpg

70 ms

BFF1.jpg

BFF1.jpg

71 ms

OSGC1.jpg

OSGC1.jpg

70 ms

engcarn1.jpg

engcarn1.jpg

73 ms

shipwreck2.jpg

shipwreck2.jpg

101 ms

environheropic11_front.jpg

environheropic11_front.jpg

102 ms

sf1.jpg

sf1.jpg

100 ms

facebook2.jpg

facebook2.jpg

102 ms

twitter2.jpg

twitter2.jpg

103 ms

youtube2.jpg

youtube2.jpg

133 ms

footerBg.png

footerBg.png

541 ms

searchIcon.jpg

searchIcon.jpg

70 ms

cwruheader.css

cwruheader.css

57 ms

jsonp.pl

jsonp.pl

173 ms

cwru-logo.png

cwru-logo.png

35 ms

search-icon.png

search-icon.png

35 ms

analytics.js

analytics.js

20 ms

collect

collect

27 ms

print.css

print.css

35 ms

Accessibility Review

gelfand.case.edu accessibility score

75

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

gelfand.case.edu best practices score

77

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

High

Registers an unload listener

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

gelfand.case.edu SEO score

85

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

High

Tap targets are not sized appropriately

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 Gelfand.case.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 Gelfand.case.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

gelfand.case.edu

Open Graph description is not detected on the main page of Gelfand Case. 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: