Tools & Wizards About Us
vernier.us screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    55% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

vernier.us

Science Probeware & Experiment Software for Teachers | Vernier

Page Load Speed

2.1 sec in total

First Response

82 ms

Resources Loaded

831 ms

Page Rendered

1.2 sec

vernier.us screenshot

About Website

Visit vernier.us now to see the best up-to-date Vernier content and also check out these interesting facts you probably never knew about vernier.us

Vernier provides teachers with the tools to encourage curiosity in all students – high quality science probeware, experiment software, and resources.

Visit vernier.us

Key Findings

We analyzed Vernier.us page load time and found that the first response time was 82 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

vernier.us performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value1,290 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

www.vernier.com

82 ms

www.vernier.com

166 ms

css

50 ms

jquery.min.js

33 ms

simple-banner.js

33 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Vernier.us, 26% (24 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Chat.chatra.io. The less responsive or slowest element that took the longest time to load (284 ms) relates to the external source Vernier.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 441.4 kB (39%)

Content Size

1.1 MB

After Optimization

679.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Vernier.us main page is 1.1 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. HTML takes 511.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 407.8 kB

  • Original 511.2 kB
  • After minification 504.8 kB
  • After compression 103.4 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 407.8 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 345.3 kB
  • After minification 345.3 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. Vernier images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 33.6 kB

  • Original 264.5 kB
  • After minification 264.5 kB
  • After compression 230.9 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 33.6 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (55%)

Requests Now

64

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vernier. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.vernier.com

www.vernier.com

82 ms

www.vernier.com

www.vernier.com

166 ms

css

css

50 ms

jquery.min.js

jquery.min.js

33 ms

simple-banner.js

simple-banner.js

33 ms

jquery.blockUI.js

jquery.blockUI.js

47 ms

js.cookie.js

js.cookie.js

32 ms

woocommerce.js

woocommerce.js

32 ms

bootstrap.min.js

bootstrap.min.js

43 ms

jquery-migrate.js

jquery-migrate.js

48 ms

slick.min.js

slick.min.js

46 ms

script.min.js

script.min.js

43 ms

vse-analytics.js

vse-analytics.js

43 ms

script.tagged-events.outbound-links.js

script.tagged-events.outbound-links.js

182 ms

main.min.js

main.min.js

43 ms

woo.js

woo.js

178 ms

wcss.js

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173 ms

jquery.hoverIntent.js

jquery.hoverIntent.js

174 ms

wpmm.min.js

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174 ms

wpmm-vertical-menu.js

wpmm-vertical-menu.js

176 ms

front.js

front.js

175 ms

imagesloaded.min.js

imagesloaded.min.js

182 ms

webpack-pro.runtime.js

webpack-pro.runtime.js

182 ms

webpack.runtime.js

webpack.runtime.js

185 ms

frontend-modules.js

frontend-modules.js

185 ms

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187 ms

regenerator-runtime.js

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184 ms

wp-polyfill.js

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189 ms

hooks.js

hooks.js

195 ms

i18n.js

i18n.js

198 ms

frontend.js

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197 ms

waypoints.js

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195 ms

core.js

core.js

196 ms

frontend.js

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197 ms

elements-handlers.js

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203 ms

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201 ms

chatra.js

chatra.js

168 ms

Vernier_Logo-06.png

Vernier_Logo-06.png

77 ms

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78 ms

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76 ms

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77 ms

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77 ms

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101 ms

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107 ms

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108 ms

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107 ms

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183 ms

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107 ms

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184 ms

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134 ms

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134 ms

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109 ms

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154 ms

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182 ms

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210 ms

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210 ms

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212 ms

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211 ms

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211 ms

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209 ms

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154 ms

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224 ms

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284 ms

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217 ms

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217 ms

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213 ms

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224 ms

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129 ms

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175 ms

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61 ms

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Accessibility Review

vernier.us accessibility score

94

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

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

vernier.us best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

vernier.us 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 Vernier.us 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 Vernier.us 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

vernier.us

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