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chemcentral.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

chemcentral.com

Chemical Distribution and Ingredient Supplier | ChemCentral Marketplace | ChemCentral.com

Page Load Speed

1.9 sec in total

First Response

53 ms

Resources Loaded

1.6 sec

Page Rendered

211 ms

chemcentral.com screenshot

About Website

Welcome to chemcentral.com homepage info - get ready to check Chem Central best content right away, or after learning these important things about chemcentral.com

ChemCentral Marketplace is a chemical distributor and ingredient supply company, offering a portfolio of chemical and ingredient products from a trusted source.

Visit chemcentral.com

Key Findings

We analyzed Chemcentral.com page load time and found that the first response time was 53 ms and then it took 1.9 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

chemcentral.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

42/100

10%

LCP (Largest Contentful Paint)

Value12.3 s

0/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value3,280 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.188

65/100

15%

TTI (Time to Interactive)

Value22.3 s

1/100

10%

Network Requests Diagram

chemcentral.com

53 ms

www.chemcentral.com

312 ms

calendar.css

25 ms

styles-m.css

61 ms

styles-l.css

40 ms

Our browser made a total of 191 requests to load all elements on the main page. We found that all of those requests were addressed to Chemcentral.com and no external sources were called. The less responsive or slowest element that took the longest time to load (746 ms) belongs to the original domain Chemcentral.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 543.8 kB (16%)

Content Size

3.5 MB

After Optimization

2.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chemcentral.com main page is 3.5 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. 80% 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 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 216.0 kB

  • Original 256.8 kB
  • After minification 214.2 kB
  • After compression 40.7 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 42.6 kB, which is 17% 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 216.0 kB or 84% of the original size.

Image Optimization

-11%

Potential reduce by 327.3 kB

  • Original 3.1 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. Obviously, Chem Central needs image optimization as it can save up to 327.3 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 17 B

  • Original 655 B
  • After minification 655 B
  • After compression 638 B

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 433 B

  • Original 167.1 kB
  • After minification 167.1 kB
  • After compression 166.6 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. Chemcentral.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 162 (90%)

Requests Now

180

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 180 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem Central. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 160 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chemcentral.com

chemcentral.com

53 ms

www.chemcentral.com

www.chemcentral.com

312 ms

calendar.css

calendar.css

25 ms

styles-m.css

styles-m.css

61 ms

styles-l.css

styles-l.css

40 ms

require.js

require.js

54 ms

mixins.js

mixins.js

52 ms

requirejs-config.js

requirejs-config.js

101 ms

find.js

find.js

53 ms

%7B%7BMEDIA_URL%7D%7Dstyles.css

%7B%7BMEDIA_URL%7D%7Dstyles.css

746 ms

email-decode.min.js

email-decode.min.js

50 ms

jquery.js

jquery.js

29 ms

common.js

common.js

29 ms

dataPost.js

dataPost.js

24 ms

bootstrap.js

bootstrap.js

28 ms

app.js

app.js

42 ms

form-key-provider.js

form-key-provider.js

68 ms

mage-translation-dictionary.js

mage-translation-dictionary.js

64 ms

compat.js

compat.js

54 ms

jquery.validate.js

jquery.validate.js

63 ms

translate.js

translate.js

49 ms

jquery.autocomplete.js

jquery.autocomplete.js

69 ms

add-webp-class-to-body.js

add-webp-class-to-body.js

74 ms

theme.js

theme.js

90 ms

template.js

template.js

61 ms

widget.js

widget.js

66 ms

jquery-migrate.js

jquery-migrate.js

56 ms

main.js

main.js

67 ms

bootstrap.js

bootstrap.js

83 ms

domReady.js

domReady.js

73 ms

jquery-mixin.js

jquery-mixin.js

79 ms

confirm.js

confirm.js

85 ms

confirm-mixin.js

confirm-mixin.js

90 ms

types.js

types.js

100 ms

layout.js

layout.js

100 ms

mage.js

mage.js

112 ms

underscore.js

underscore.js

107 ms

core.js

core.js

100 ms

accordion.js

accordion.js

116 ms

autocomplete.js

autocomplete.js

116 ms

button.js

button.js

126 ms

datepicker.js

datepicker.js

135 ms

dialog.js

dialog.js

131 ms

draggable.js

draggable.js

150 ms

droppable.js

droppable.js

139 ms

effect-blind.js

effect-blind.js

154 ms

effect-bounce.js

effect-bounce.js

159 ms

effect-clip.js

effect-clip.js

160 ms

effect-drop.js

effect-drop.js

160 ms

effect-explode.js

effect-explode.js

177 ms

effect-fade.js

effect-fade.js

175 ms

effect-fold.js

effect-fold.js

189 ms

effect-highlight.js

effect-highlight.js

181 ms

effect-scale.js

effect-scale.js

184 ms

effect-pulsate.js

effect-pulsate.js

202 ms

effect-shake.js

effect-shake.js

201 ms

effect-slide.js

effect-slide.js

200 ms

effect-transfer.js

effect-transfer.js

202 ms

effect.js

effect.js

200 ms

menu.js

menu.js

200 ms

mouse.js

mouse.js

201 ms

position.js

position.js

204 ms

progressbar.js

progressbar.js

208 ms

resizable.js

resizable.js

201 ms

selectable.js

selectable.js

196 ms

selectmenu.js

selectmenu.js

194 ms

sortable.js

sortable.js

196 ms

spinner.js

spinner.js

208 ms

tabs.js

tabs.js

192 ms

timepicker.js

timepicker.js

196 ms

tooltip.js

tooltip.js

189 ms

jquery.metadata.js

jquery.metadata.js

188 ms

text.js

text.js

204 ms

has-webp.js

has-webp.js

189 ms

smart-keyboard-handler.js

smart-keyboard-handler.js

248 ms

ie-class-fixer.js

ie-class-fixer.js

194 ms

version.js

version.js

181 ms

scripts.js

scripts.js

190 ms

wrapper.js

wrapper.js

193 ms

knockout.js

knockout.js

199 ms

knockout-es5.js

knockout-es5.js

210 ms

engine.js

engine.js

189 ms

modal.js

modal.js

205 ms

bootstrap.js

bootstrap.js

207 ms

observable_array.js

observable_array.js

197 ms

bound-nodes.js

bound-nodes.js

198 ms

publisher.js

publisher.js

199 ms

main.js

main.js

192 ms

registry.js

registry.js

199 ms

console-logger.js

console-logger.js

186 ms

data.js

data.js

189 ms

disable-selection.js

disable-selection.js

203 ms

focusable.js

focusable.js

187 ms

form.js

form.js

183 ms

ie.js

ie.js

185 ms

keycode.js

keycode.js

190 ms

labels.js

labels.js

198 ms

jquery-patch.js

jquery-patch.js

197 ms

plugin.js

plugin.js

184 ms

safe-active-element.js

safe-active-element.js

178 ms

safe-blur.js

safe-blur.js

189 ms

scroll-parent.js

scroll-parent.js

191 ms

tabbable.js

tabbable.js

191 ms

unique-id.js

unique-id.js

181 ms

controlgroup.js

controlgroup.js

186 ms

checkboxradio.js

checkboxradio.js

190 ms

effect-size.js

effect-size.js

201 ms

jquery-var-for-color.js

jquery-var-for-color.js

192 ms

jquery.color.js

jquery.color.js

197 ms

form-reset-mixin.js

form-reset-mixin.js

185 ms

js-translation.json

js-translation.json

198 ms

modal-popup.html

modal-popup.html

186 ms

modal-slide.html

modal-slide.html

177 ms

modal-custom.html

modal-custom.html

169 ms

key-codes.js

key-codes.js

166 ms

z-index.js

z-index.js

183 ms

observable_source.js

observable_source.js

187 ms

renderer.js

renderer.js

196 ms

knockout-repeat.js

knockout-repeat.js

204 ms

knockout-fast-foreach.js

knockout-fast-foreach.js

212 ms

resizable.js

resizable.js

209 ms

i18n.js

i18n.js

203 ms

scope.js

scope.js

202 ms

range.js

range.js

206 ms

mage-init.js

mage-init.js

207 ms

keyboard.js

keyboard.js

204 ms

optgroup.js

optgroup.js

227 ms

after-render.js

after-render.js

203 ms

autoselect.js

autoselect.js

197 ms

datepicker.js

datepicker.js

216 ms

outer_click.js

outer_click.js

208 ms

events.js

events.js

198 ms

fadeVisible.js

fadeVisible.js

196 ms

collapsible.js

collapsible.js

206 ms

staticChecked.js

staticChecked.js

199 ms

simple-checked.js

simple-checked.js

216 ms

bind-html.js

bind-html.js

219 ms

tooltip.js

tooltip.js

200 ms

color-picker.js

color-picker.js

193 ms

require-optional.js

require-optional.js

194 ms

arrays.js

arrays.js

200 ms

compare.js

compare.js

227 ms

misc.js

misc.js

192 ms

objects.js

objects.js

219 ms

strings.js

strings.js

193 ms

template.js

template.js

177 ms

local.js

local.js

159 ms

logger.js

logger.js

183 ms

entry-factory.js

entry-factory.js

175 ms

console-output-handler.js

console-output-handler.js

182 ms

formatter.js

formatter.js

180 ms

message-pool.js

message-pool.js

182 ms

levels-pool.js

levels-pool.js

168 ms

logger-utils.js

logger-utils.js

163 ms

class.js

class.js

154 ms

loader.js

loader.js

182 ms

ChemCentral_MarketplaceLogo_KO_Final.svg

ChemCentral_MarketplaceLogo_KO_Final.svg

175 ms

US_flag.png

US_flag.png

205 ms

am-recaptcha.js

am-recaptcha.js

168 ms

opensans-400.woff

opensans-400.woff

219 ms

opensans-300.woff

opensans-300.woff

179 ms

opensans-600.woff

opensans-600.woff

194 ms

opensans-700.woff

opensans-700.woff

193 ms

async.js

async.js

174 ms

fa-regular-400.woff

fa-regular-400.woff

238 ms

fa-light-300.woff

fa-light-300.woff

200 ms

fa-solid-900.woff

fa-solid-900.woff

217 ms

cookies.js

cookies.js

191 ms

Luma-Icons.woff

Luma-Icons.woff

217 ms

image_4_.png

image_4_.png

242 ms

fuchs_logo_1_.png

fuchs_logo_1_.png

215 ms

univarsolutions-logo_1_1_.png

univarsolutions-logo_1_1_.png

207 ms

silverdrum_univar.png

silverdrum_univar.png

233 ms

propylene_glycol_usp_kosher_99_480_chem.png

propylene_glycol_usp_kosher_99_480_chem.png

225 ms

spectrum.js

spectrum.js

225 ms

tinycolor.js

tinycolor.js

216 ms

tooltip.html

tooltip.html

209 ms

google-tag-manager.js

google-tag-manager.js

221 ms

800363299.png

800363299.png

233 ms

hydrogen_peroxide_34_solution_500_chem.png

hydrogen_peroxide_34_solution_500_chem.png

254 ms

ethylene_glycol_99_515_chem.png

ethylene_glycol_99_515_chem.png

220 ms

image_4_-min.png

image_4_-min.png

252 ms

chemcentral-gtm.js

chemcentral-gtm.js

203 ms

entry.js

entry.js

230 ms

moment.js

moment.js

231 ms

dom-observer.js

dom-observer.js

120 ms

bindings.js

bindings.js

126 ms

cookie-wrapper.js

cookie-wrapper.js

149 ms

main.js

main.js

45 ms

js.cookie.js

js.cookie.js

30 ms

print.css

print.css

24 ms

Accessibility Review

chemcentral.com accessibility score

71

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

High

ARIA IDs are not unique

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

Low

No form fields have multiple labels

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

chemcentral.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

chemcentral.com SEO score

76

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 Chemcentral.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 Chemcentral.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

chemcentral.com

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