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cem.com screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

cem.com

CEM Corporation

Page Load Speed

2.7 sec in total

First Response

99 ms

Resources Loaded

1.6 sec

Page Rendered

907 ms

cem.com screenshot

About Website

Welcome to cem.com homepage info - get ready to check CEM best content for Canada right away, or after learning these important things about cem.com

CEM is the leading provider of microwave instrumentation for analytical and synthetic chemistry applications. Major application areas include acid digestion for elemental analysis, compositional testi...

Visit cem.com

Key Findings

We analyzed Cem.com page load time and found that the first response time was 99 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cem.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

54/100

10%

LCP (Largest Contentful Paint)

Value12.1 s

0/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.285

42/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

cem.com

99 ms

991dffcb37a0f9d54f399bf2bfc6735a.min.css

57 ms

styles-l.min.css

20 ms

css2

122 ms

css2

140 ms

Our browser made a total of 146 requests to load all elements on the main page. We found that 82% of them (120 requests) were addressed to the original Cem.com, 4% (6 requests) were made to Fonts.googleapis.com and 3% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (424 ms) relates to the external source 355-dhy-445.mktoresp.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 400.5 kB (12%)

Content Size

3.4 MB

After Optimization

3.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cem.com main page is 3.4 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 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 113.6 kB

  • Original 135.5 kB
  • After minification 125.2 kB
  • After compression 21.9 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 113.6 kB or 84% of the original size.

Image Optimization

-6%

Potential reduce by 180.3 kB

  • Original 2.8 MB
  • After minification 2.7 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. CEM images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 3.2 kB

  • Original 290.5 kB
  • After minification 290.5 kB
  • After compression 287.3 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

-82%

Potential reduce by 103.4 kB

  • Original 126.2 kB
  • After minification 22.9 kB
  • After compression 22.9 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. Cem.com needs all CSS files to be minified and compressed as it can save up to 103.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 118 (89%)

Requests Now

133

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 133 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CEM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 110 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cem.com

cem.com

99 ms

991dffcb37a0f9d54f399bf2bfc6735a.min.css

991dffcb37a0f9d54f399bf2bfc6735a.min.css

57 ms

styles-l.min.css

styles-l.min.css

20 ms

css2

css2

122 ms

css2

css2

140 ms

css2

css2

146 ms

css2

css2

147 ms

css2

css2

149 ms

css2

css2

147 ms

all.css

all.css

139 ms

require.min.js

require.min.js

49 ms

requirejs-min-resolver.min.js

requirejs-min-resolver.min.js

102 ms

mixins.min.js

mixins.min.js

48 ms

requirejs-config.min.js

requirejs-config.min.js

102 ms

storeCookieChecker.min.js

storeCookieChecker.min.js

101 ms

geoip2.js

geoip2.js

115 ms

ws-tracking.js

ws-tracking.js

106 ms

print.min.css

print.min.css

6 ms

munchkin.js

munchkin.js

231 ms

gtm.js

gtm.js

277 ms

logo_large.gif

logo_large.gif

204 ms

backgound.png

backgound.png

109 ms

cd-top-arrow.svg

cd-top-arrow.svg

108 ms

jquery.mobile.custom.min.js

jquery.mobile.custom.min.js

103 ms

common.min.js

common.min.js

102 ms

dataPost.min.js

dataPost.min.js

104 ms

bootstrap.min.js

bootstrap.min.js

103 ms

jquery.min.js

jquery.min.js

130 ms

es6-collections.min.js

es6-collections.min.js

119 ms

FormData.min.js

FormData.min.js

118 ms

form-key-provider.min.js

form-key-provider.min.js

118 ms

mage-translation-dictionary.min.js

mage-translation-dictionary.min.js

116 ms

webpimages.min.js

webpimages.min.js

115 ms

lazysizes.min.js

lazysizes.min.js

123 ms

theme.min.js

theme.min.js

123 ms

popper.min.js

popper.min.js

122 ms

cem.min.js

cem.min.js

122 ms

cookies.min.js

cookies.min.js

121 ms

autocomplete.min.js

autocomplete.min.js

148 ms

typeahead.min.js

typeahead.min.js

147 ms

knockout.min.js

knockout.min.js

268 ms

domReady.min.js

domReady.min.js

145 ms

KFOmCnqEu92Fr1Me5WZNCzc.ttf

KFOmCnqEu92Fr1Me5WZNCzc.ttf

72 ms

KFOlCnqEu92Fr1MmSU5vAx0_IsE.ttf

KFOlCnqEu92Fr1MmSU5vAx0_IsE.ttf

180 ms

KFOkCnqEu92Fr1MmgWxPKTU1Kg.ttf

KFOkCnqEu92Fr1MmgWxPKTU1Kg.ttf

194 ms

flUhRq6tzZclQEJ-Vdg-IuiaDsNZIhQ8tQ.ttf

flUhRq6tzZclQEJ-Vdg-IuiaDsNZIhQ8tQ.ttf

250 ms

gok-H7zzDkdnRel8-DQ6KAXJ69wP1tGnf4ZGhUcdl5euIg.otf

gok-H7zzDkdnRel8-DQ6KAXJ69wP1tGnf4ZGhUcdl5euIg.otf

249 ms

backgound.png

backgound.png

245 ms

main.min.js

main.min.js

42 ms

bootstrap.min.js

bootstrap.min.js

40 ms

template.min.js

template.min.js

159 ms

confirm.min.js

confirm.min.js

160 ms

widget.min.js

widget.min.js

160 ms

munchkin.js

munchkin.js

38 ms

jquery.min.js

jquery.min.js

155 ms

jquery-mixin.min.js

jquery-mixin.min.js

36 ms

text.min.js

text.min.js

155 ms

modernizr-webp.min.js

modernizr-webp.min.js

151 ms

jquery-migrate.min.js

jquery-migrate.min.js

135 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

185 ms

slick.min.js

slick.min.js

135 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

185 ms

smart-keyboard-handler.min.js

smart-keyboard-handler.min.js

130 ms

mage.min.js

mage.min.js

181 ms

ie-class-fixer.min.js

ie-class-fixer.min.js

182 ms

jquery.cookie.min.js

jquery.cookie.min.js

131 ms

underscore.min.js

underscore.min.js

114 ms

knockout-es5.min.js

knockout-es5.min.js

113 ms

visitWebPage

visitWebPage

424 ms

wrapper.min.js

wrapper.min.js

113 ms

home-page-graphic_1_.png

home-page-graphic_1_.png

103 ms

home-page-ue-spps-cycle.png

home-page-ue-spps-cycle.png

103 ms

js

js

90 ms

scripts.min.js

scripts.min.js

84 ms

engine.min.js

engine.min.js

84 ms

bootstrap.min.js

bootstrap.min.js

84 ms

observable_array.min.js

observable_array.min.js

84 ms

bound-nodes.min.js

bound-nodes.min.js

83 ms

js-translation.json

js-translation.json

31 ms

translate.min.js

translate.min.js

29 ms

modal.min.js

modal.min.js

28 ms

home-page-graphic_1_.png

home-page-graphic_1_.png

314 ms

home-page-ue-spps-cycle.png

home-page-ue-spps-cycle.png

334 ms

events.min.js

events.min.js

210 ms

knockout-repeat.min.js

knockout-repeat.min.js

205 ms

knockout-fast-foreach.min.js

knockout-fast-foreach.min.js

205 ms

www.example.com

www.example.com

240 ms

modal-popup.html

modal-popup.html

85 ms

modal-slide.html

modal-slide.html

85 ms

modal-custom.html

modal-custom.html

84 ms

key-codes.min.js

key-codes.min.js

96 ms

core.min.js

core.min.js

94 ms

observable_source.min.js

observable_source.min.js

59 ms

renderer.min.js

renderer.min.js

58 ms

console-logger.min.js

console-logger.min.js

58 ms

resizable.min.js

resizable.min.js

53 ms

i18n.min.js

i18n.min.js

101 ms

scope.min.js

scope.min.js

101 ms

range.min.js

range.min.js

101 ms

mage-init.min.js

mage-init.min.js

100 ms

keyboard.min.js

keyboard.min.js

98 ms

optgroup.min.js

optgroup.min.js

99 ms

after-render.min.js

after-render.min.js

103 ms

autoselect.min.js

autoselect.min.js

103 ms

datepicker.min.js

datepicker.min.js

103 ms

outer_click.min.js

outer_click.min.js

98 ms

fadeVisible.min.js

fadeVisible.min.js

101 ms

collapsible.min.js

collapsible.min.js

100 ms

staticChecked.min.js

staticChecked.min.js

109 ms

simple-checked.min.js

simple-checked.min.js

109 ms

bind-html.min.js

bind-html.min.js

108 ms

tooltip.min.js

tooltip.min.js

109 ms

color-picker.min.js

color-picker.min.js

110 ms

async.min.js

async.min.js

66 ms

registry.min.js

registry.min.js

67 ms

resizable.min.js

resizable.min.js

70 ms

local.min.js

local.min.js

52 ms

class.min.js

class.min.js

49 ms

logger.min.js

logger.min.js

30 ms

entry-factory.min.js

entry-factory.min.js

28 ms

console-output-handler.min.js

console-output-handler.min.js

31 ms

formatter.min.js

formatter.min.js

33 ms

message-pool.min.js

message-pool.min.js

31 ms

levels-pool.min.js

levels-pool.min.js

32 ms

logger-utils.min.js

logger-utils.min.js

30 ms

loader.min.js

loader.min.js

32 ms

main.min.js

main.min.js

19 ms

ue-spps.png

ue-spps.png

45 ms

efficient-pfas-sample-prep-following-eps-1633-webinar-thumb.jpg

efficient-pfas-sample-prep-following-eps-1633-webinar-thumb.jpg

46 ms

tooltip.html

tooltip.html

32 ms

spectrum.min.js

spectrum.min.js

32 ms

tinycolor.min.js

tinycolor.min.js

30 ms

mouse.min.js

mouse.min.js

28 ms

moment.min.js

moment.min.js

19 ms

template.min.js

template.min.js

17 ms

ue-spps.png

ue-spps.png

42 ms

efficient-pfas-sample-prep-following-eps-1633-webinar-thumb.jpg

efficient-pfas-sample-prep-following-eps-1633-webinar-thumb.jpg

102 ms

dom-observer.min.js

dom-observer.min.js

20 ms

bindings.min.js

bindings.min.js

19 ms

entry.min.js

entry.min.js

19 ms

arrays.min.js

arrays.min.js

20 ms

compare.min.js

compare.min.js

19 ms

misc.min.js

misc.min.js

21 ms

objects.min.js

objects.min.js

19 ms

strings.min.js

strings.min.js

20 ms

BFiT3ouV

BFiT3ouV

331 ms

Accessibility Review

cem.com accessibility score

92

Accessibility Issues

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

Image elements do not have [alt] attributes

Best Practices

cem.com best practices score

83

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

Page has valid source maps

SEO Factors

cem.com SEO score

77

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

High

Image elements do not have [alt] attributes

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

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 Cem.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 Cem.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

cem.com

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