Tools & Wizards About Us
visuallearningsys.com screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

visuallearningsys.com

K-12 Science Units of Study (videos, teacher's guides and more) Spanish and English, DVD/Digital/Subscription

Page Load Speed

1.1 sec in total

First Response

178 ms

Resources Loaded

845 ms

Page Rendered

113 ms

visuallearningsys.com screenshot

About Website

Click here to check amazing Visuallearningsys content for United States. Otherwise, check out these important facts you probably never knew about visuallearningsys.com

Visual Learning Systems produces quality standards-based science videos, teacher's guides and student activities to support the K-12 curriculum. Its mission is to provide teachers with quality visual ...

Visit visuallearningsys.com

Key Findings

We analyzed Visuallearningsys.com page load time and found that the first response time was 178 ms and then it took 958 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

visuallearningsys.com performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.9 s

88/100

10%

Network Requests Diagram

visuallearningsys.com

178 ms

visuallearningsys.com

74 ms

www.visuallearningsys.com

149 ms

main.css

33 ms

fsmenu.js

65 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 87% of them (27 requests) were addressed to the original Visuallearningsys.com, 6% (2 requests) were made to Seal.godaddy.com and 6% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (362 ms) relates to the external source Seal.godaddy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 231.6 kB (55%)

Content Size

420.0 kB

After Optimization

188.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Visuallearningsys.com main page is 420.0 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. 25% of websites need less resources to load. Images take 212.5 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 10.8 kB

  • Original 15.0 kB
  • After minification 12.1 kB
  • After compression 4.2 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. This page needs HTML code to be minified as it can gain 2.9 kB, which is 19% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 10.8 kB or 72% of the original size.

Image Optimization

-40%

Potential reduce by 84.2 kB

  • Original 212.5 kB
  • After minification 128.3 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, Visuallearningsys needs image optimization as it can save up to 84.2 kB or 40% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 68.4 kB

  • Original 113.2 kB
  • After minification 101.3 kB
  • After compression 44.8 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 68.4 kB or 60% of the original size.

CSS Optimization

-86%

Potential reduce by 68.2 kB

  • Original 79.3 kB
  • After minification 63.7 kB
  • After compression 11.1 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. Visuallearningsys.com needs all CSS files to be minified and compressed as it can save up to 68.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (39%)

Requests Now

28

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Visuallearningsys. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

visuallearningsys.com

visuallearningsys.com

178 ms

visuallearningsys.com

visuallearningsys.com

74 ms

www.visuallearningsys.com

www.visuallearningsys.com

149 ms

main.css

main.css

33 ms

fsmenu.js

fsmenu.js

65 ms

listmenu_h-new.css

listmenu_h-new.css

49 ms

listmenu_fallback.css

listmenu_fallback.css

49 ms

jquery.js

jquery.js

66 ms

prettyPhoto.css

prettyPhoto.css

109 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

110 ms

getSeal

getSeal

362 ms

ga.js

ga.js

19 ms

nav-bg.jpg

nav-bg.jpg

39 ms

logo.png

logo.png

41 ms

bg_checkout_link.png

bg_checkout_link.png

43 ms

search-icon.png

search-icon.png

42 ms

bg_menulist_bb.png

bg_menulist_bb.png

43 ms

bg-home-new.jpg

bg-home-new.jpg

39 ms

home.jpg

home.jpg

41 ms

dso-login-bg.jpg

dso-login-bg.jpg

41 ms

dso-login.jpg

dso-login.jpg

57 ms

footer-logo.jpg

footer-logo.jpg

58 ms

fb.jpg

fb.jpg

57 ms

__utm.gif

__utm.gif

13 ms

sprite.png

sprite.png

19 ms

siteseal_gd_3_h_l_m.gif

siteseal_gd_3_h_l_m.gif

75 ms

contentPatternTop.png

contentPatternTop.png

18 ms

contentPatternLeft.png

contentPatternLeft.png

18 ms

contentPatternRight.png

contentPatternRight.png

19 ms

loader.gif

loader.gif

18 ms

contentPatternBottom.png

contentPatternBottom.png

19 ms

Accessibility Review

visuallearningsys.com accessibility score

62

Accessibility Issues

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Best Practices

visuallearningsys.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

visuallearningsys.com SEO score

98

Search Engine Optimization Advices

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 Visuallearningsys.com 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 Visuallearningsys.com 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

visuallearningsys.com

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