Tools & Wizards About Us
science-at-home.org screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    86% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

science-at-home.org

Science@home — Science activities for babies, toddlers & kids

Page Load Speed

21.4 sec in total

First Response

165 ms

Resources Loaded

21 sec

Page Rendered

164 ms

science-at-home.org screenshot

About Website

Click here to check amazing Science At Home content for United States. Otherwise, check out these important facts you probably never knew about science-at-home.org

Fun science activities for babies, toddlers and children. Ideas to do at home and learn about science.

Visit science-at-home.org

Key Findings

We analyzed Science-at-home.org page load time and found that the first response time was 165 ms and then it took 21.2 sec 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

science-at-home.org performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

56/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

science-at-home.org

165 ms

science-at-home.org

518 ms

style.css

117 ms

layout.css

180 ms

custom.css

181 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 86% of them (64 requests) were addressed to the original Science-at-home.org, 3% (2 requests) were made to Linkwithin.com and 3% (2 requests) were made to Stopavn.com. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source Jdimg.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 61.0 kB (16%)

Content Size

371.1 kB

After Optimization

310.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Science-at-home.org main page is 371.1 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. Images take 230.3 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 31.1 kB

  • Original 40.0 kB
  • After minification 39.3 kB
  • After compression 8.9 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 31.1 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 12.8 kB

  • Original 230.3 kB
  • After minification 217.6 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. Science At Home images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 11.9 kB

  • Original 87.6 kB
  • After minification 87.6 kB
  • After compression 75.6 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 11.9 kB or 14% of the original size.

CSS Optimization

-39%

Potential reduce by 5.2 kB

  • Original 13.2 kB
  • After minification 13.2 kB
  • After compression 8.0 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. Science-at-home.org needs all CSS files to be minified and compressed as it can save up to 5.2 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (31%)

Requests Now

45

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science At Home. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

science-at-home.org

science-at-home.org

165 ms

science-at-home.org

science-at-home.org

518 ms

style.css

style.css

117 ms

layout.css

layout.css

180 ms

custom.css

custom.css

181 ms

polls-css.css

polls-css.css

181 ms

commentluv.css

commentluv.css

61 ms

stats-css.css

stats-css.css

194 ms

jquery.js

jquery.js

298 ms

jquery-migrate.min.js

jquery-migrate.min.js

195 ms

commentluv.js

commentluv.js

124 ms

bubble.js

bubble.js

123 ms

style.css

style.css

124 ms

widget.js

widget.js

452 ms

lmn.js

lmn.js

78 ms

polls-js.js

polls-js.js

238 ms

wp-embed.min.js

wp-embed.min.js

238 ms

commentluv.css

commentluv.css

183 ms

commentluv.js

commentluv.js

120 ms

bubble.js

bubble.js

118 ms

style.css

style.css

188 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

125 ms

camouflage.jpg

camouflage.jpg

64 ms

thumb.php

thumb.php

84 ms

thumb.php

thumb.php

81 ms

thumb.php

thumb.php

85 ms

thumb.php

thumb.php

85 ms

thumb.php

thumb.php

86 ms

thumb.php

thumb.php

92 ms

vaccination-saves-lives-badge.png

vaccination-saves-lives-badge.png

452 ms

badge4.gif

badge4.gif

20099 ms

icon-rss.gif

icon-rss.gif

146 ms

balloons2.jpg

balloons2.jpg

63 ms

facebook_48.png

facebook_48.png

64 ms

rss_48.png

rss_48.png

66 ms

mail_48.png

mail_48.png

120 ms

twitter_48.png

twitter_48.png

120 ms

whole-cover-small.jpg

whole-cover-small.jpg

122 ms

list_cover.jpg

list_cover.jpg

122 ms

rightsm.gif

rightsm.gif

122 ms

close.png

close.png

123 ms

facebook.png

facebook.png

177 ms

twitter.png

twitter.png

178 ms

avatar.jpg

avatar.jpg

181 ms

rss.png

rss.png

180 ms

followme_grab.gif

followme_grab.gif

181 ms

pixel.png

pixel.png

360 ms

camouflage.jpg

camouflage.jpg

137 ms

balloons2.jpg

balloons2.jpg

145 ms

facebook_48.png

facebook_48.png

82 ms

rss_48.png

rss_48.png

82 ms

mail_48.png

mail_48.png

64 ms

twitter_48.png

twitter_48.png

88 ms

whole-cover-small.jpg

whole-cover-small.jpg

86 ms

list_cover.jpg

list_cover.jpg

87 ms

rightsm.gif

rightsm.gif

120 ms

close.png

close.png

132 ms

followme_top.gif

followme_top.gif

64 ms

followme_mid.gif

followme_mid.gif

92 ms

followme_bottom.gif

followme_bottom.gif

93 ms

counter.js

counter.js

36 ms

facebook.png

facebook.png

91 ms

twitter.png

twitter.png

89 ms

rss.png

rss.png

89 ms

avatar.jpg

avatar.jpg

86 ms

followme_grab.gif

followme_grab.gif

122 ms

t.php

t.php

87 ms

ga.js

ga.js

18 ms

followme_top.gif

followme_top.gif

117 ms

closeit.png

closeit.png

98 ms

__utm.gif

__utm.gif

11 ms

followme_mid.gif

followme_mid.gif

94 ms

followme_bottom.gif

followme_bottom.gif

94 ms

vaccination-saves-lives-badge.png

vaccination-saves-lives-badge.png

835 ms

Accessibility Review

science-at-home.org accessibility score

66

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.

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

Image elements do not have [alt] attributes

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

science-at-home.org best practices score

67

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

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

science-at-home.org SEO score

79

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Science-at-home.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 Science-at-home.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

science-at-home.org

Open Graph description is not detected on the main page of Science At Home. 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: