Tools & Wizards About Us

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

teachervision.com

Trusted Teacher Resources, Lesson Plans and Worksheets for Grades K-12 - TeacherVision

Page Load Speed

21.4 sec in total

First Response

11 ms

Resources Loaded

20.7 sec

Page Rendered

661 ms

About Website

Welcome to teachervision.com homepage info - get ready to check Teacher Vision best content for United States right away, or after learning these important things about teachervision.com

TeacherVision provides teachers with expertly curated teaching resources and printables across all subjects for grades pre-K to 12.

Visit teachervision.com

Key Findings

We analyzed Teachervision.com page load time and found that the first response time was 11 ms and then it took 21.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% 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

teachervision.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

31/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value19.2 s

0/100

10%

TBT (Total Blocking Time)

Value8,580 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value55.4 s

0/100

10%

Network Requests Diagram

teachervision.com

11 ms

www.teachervision.com

36 ms

js

116 ms

ramp_config.js

105 ms

b-00cy.min.js

63 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 47% of them (41 requests) were addressed to the original Teachervision.com, 8% (7 requests) were made to Use.typekit.net and 5% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source I.postimg.cc.

Page Optimization Overview & Recommendations

Page size can be reduced by 944.0 kB (15%)

Content Size

6.3 MB

After Optimization

5.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Teachervision.com main page is 6.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.6 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 293.3 kB

  • Original 345.9 kB
  • After minification 254.8 kB
  • After compression 52.6 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 91.1 kB, which is 26% 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 293.3 kB or 85% of the original size.

Image Optimization

-11%

Potential reduce by 641.7 kB

  • Original 5.6 MB
  • After minification 5.0 MB

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, Teacher Vision needs image optimization as it can save up to 641.7 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 8.8 kB

  • Original 281.8 kB
  • After minification 281.8 kB
  • After compression 273.0 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

-0%

Potential reduce by 195 B

  • Original 55.0 kB
  • After minification 55.0 kB
  • After compression 54.8 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. Teachervision.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 33 (45%)

Requests Now

74

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 74 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Teacher Vision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

teachervision.com accessibility score

78

Accessibility Issues

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

Buttons do not have an accessible name

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

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

High

Heading elements are not in a sequentially-descending order

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

teachervision.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

teachervision.com SEO score

93

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

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 Teachervision.com 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 Teachervision.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

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