Tools & Wizards About Us
casel.org screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

casel.org

Advancing Social and Emotional Learning - CASEL

Page Load Speed

1.5 sec in total

First Response

64 ms

Resources Loaded

1.1 sec

Page Rendered

300 ms

casel.org screenshot

About Website

Click here to check amazing CASEL content for United States. Otherwise, check out these important facts you probably never knew about casel.org

CASEL is helping make evidence-based social and emotional learning an integral part of education, preschool through high school.

Visit casel.org

Key Findings

We analyzed Casel.org page load time and found that the first response time was 64 ms and then it took 1.4 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

casel.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value1,300 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.211

59/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

www.casel.org

64 ms

luk6ezv.js

145 ms

css

27 ms

site.css

85 ms

jsapi

28 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 11% of them (4 requests) were addressed to the original Casel.org, 27% (10 requests) were made to Google.com and 19% (7 requests) were made to Static1.squarespace.com. The less responsive or slowest element that took the longest time to load (257 ms) belongs to the original domain Casel.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 118.3 kB (18%)

Content Size

642.3 kB

After Optimization

524.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Casel.org main page is 642.3 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. 60% of websites need less resources to load. Images take 475.2 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 62.3 kB

  • Original 81.0 kB
  • After minification 76.1 kB
  • After compression 18.7 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 62.3 kB or 77% of the original size.

Image Optimization

-9%

Potential reduce by 42.2 kB

  • Original 475.2 kB
  • After minification 433.1 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. CASEL images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 826 B

  • Original 70.0 kB
  • After minification 70.0 kB
  • After compression 69.2 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

-81%

Potential reduce by 13.0 kB

  • Original 16.0 kB
  • After minification 13.0 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. Casel.org needs all CSS files to be minified and compressed as it can save up to 13.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (45%)

Requests Now

31

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CASEL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.casel.org

www.casel.org

64 ms

luk6ezv.js

luk6ezv.js

145 ms

css

css

27 ms

site.css

site.css

85 ms

jsapi

jsapi

28 ms

styles.css

styles.css

35 ms

jquery.min.js

jquery.min.js

32 ms

site.js

site.js

89 ms

common-0437e51819dd863618ab-min.js

common-0437e51819dd863618ab-min.js

85 ms

commerce-1d13bdbc93aaacbb9cbd-min.js

commerce-1d13bdbc93aaacbb9cbd-min.js

60 ms

commerce-2b4a0593bca72ff9bd48bd03804b62b2-min.css

commerce-2b4a0593bca72ff9bd48bd03804b62b2-min.css

44 ms

27 ms

btn_donate_LG.gif

btn_donate_LG.gif

38 ms

pixel.gif

pixel.gif

40 ms

22 ms

default+en.css

default+en.css

14 ms

default.css

default.css

24 ms

default+en.I.js

default+en.I.js

51 ms

default.css

default.css

54 ms

ga.js

ga.js

69 ms

social-accounts.svg

social-accounts.svg

254 ms

RecordHit

RecordHit

257 ms

Image+of+kids.jpg

Image+of+kids.jpg

102 ms

count.js

count.js

80 ms

async-ads.js

async-ads.js

91 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

51 ms

small-logo.png

small-logo.png

45 ms

search_box_icon.png

search_box_icon.png

45 ms

clear.png

clear.png

106 ms

nav_logo114.png

nav_logo114.png

46 ms

48 ms

casel-secondary-guide-cover.png

casel-secondary-guide-cover.png

46 ms

the-missing-piece.png

the-missing-piece.png

89 ms

k3k702ZOKiLJc3WVjuplzJS3E-kSBmtLoNJPDtbj2Pk.ttf

k3k702ZOKiLJc3WVjuplzJS3E-kSBmtLoNJPDtbj2Pk.ttf

75 ms

EInbV5DfGHOiMmvb1Xr-hpS3E-kSBmtLoNJPDtbj2Pk.ttf

EInbV5DfGHOiMmvb1Xr-hpS3E-kSBmtLoNJPDtbj2Pk.ttf

84 ms

cJZKeOuBrn4kERxqtaUH3SZ2oysoEQEeKwjgmXLRnTc.ttf

cJZKeOuBrn4kERxqtaUH3SZ2oysoEQEeKwjgmXLRnTc.ttf

100 ms

__utm.gif

__utm.gif

53 ms

Accessibility Review

casel.org accessibility score

92

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

casel.org best practices score

75

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

casel.org SEO score

91

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

    EN

  • Encoding

    UTF-8

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

casel.org

Open Graph data is detected on the main page of CASEL. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: