Tools & Wizards About Us
chemistrycrossing.com screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 94

    SEO

    Google-friendlier than
    90% of websites

chemistrycrossing.com

Chemistry Jobs, Chemist Biochemistry Jobs, Organic Analytical Jobs | ChemistryCrossing.com

Page Load Speed

3 sec in total

First Response

171 ms

Resources Loaded

2.6 sec

Page Rendered

249 ms

chemistrycrossing.com screenshot

About Website

Welcome to chemistrycrossing.com homepage info - get ready to check Chemistry Crossing best content right away, or after learning these important things about chemistrycrossing.com

Looking for Chemistry Jobs, Chemist Biochemistry Jobs, Organic Analytical Jobs? Search jobs in Chemistry as biochemistry organic analytical medicinal environmental physical lab in lecturer inorganic g...

Visit chemistrycrossing.com

Key Findings

We analyzed Chemistrycrossing.com page load time and found that the first response time was 171 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

chemistrycrossing.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

71/100

25%

SI (Speed Index)

Value4.0 s

80/100

10%

TBT (Total Blocking Time)

Value1,370 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.555

13/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

chemistrycrossing.com

171 ms

www.chemistrycrossing.com

611 ms

jquery.min.js

53 ms

jquery-migrate-1.2.1.min.js

48 ms

general_20221213015647.js

76 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 38% of them (23 requests) were addressed to the original Chemistrycrossing.com, 30% (18 requests) were made to Fonts.gstatic.com and 7% (4 requests) were made to D1qlntccfgnfp6.cloudfront.net. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Employmentcrossing.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 131.5 kB (35%)

Content Size

379.0 kB

After Optimization

247.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chemistrycrossing.com main page is 379.0 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. 50% of websites need less resources to load. Javascripts take 178.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 82.2 kB

  • Original 102.1 kB
  • After minification 88.1 kB
  • After compression 19.9 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. This page needs HTML code to be minified as it can gain 14.1 kB, which is 14% 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 82.2 kB or 81% of the original size.

Image Optimization

-11%

Potential reduce by 5.3 kB

  • Original 48.4 kB
  • After minification 43.1 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, Chemistry Crossing needs image optimization as it can save up to 5.3 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

-23%

Potential reduce by 41.3 kB

  • Original 178.6 kB
  • After minification 178.6 kB
  • After compression 137.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 41.3 kB or 23% of the original size.

CSS Optimization

-5%

Potential reduce by 2.7 kB

  • Original 49.8 kB
  • After minification 49.8 kB
  • After compression 47.1 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. Chemistrycrossing.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 25 (66%)

Requests Now

38

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemistry Crossing. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chemistrycrossing.com

chemistrycrossing.com

171 ms

www.chemistrycrossing.com

www.chemistrycrossing.com

611 ms

jquery.min.js

jquery.min.js

53 ms

jquery-migrate-1.2.1.min.js

jquery-migrate-1.2.1.min.js

48 ms

general_20221213015647.js

general_20221213015647.js

76 ms

bootstrap.min_20150130010109.js

bootstrap.min_20150130010109.js

143 ms

jquery-hover-effect_20150212020915.js

jquery-hover-effect_20150212020915.js

202 ms

jquery-ui_20160823005353.css

jquery-ui_20160823005353.css

225 ms

jquery-ui_20171003051045.js

jquery-ui_20171003051045.js

375 ms

jquery.cornerslider_20160520005646.js

jquery.cornerslider_20160520005646.js

267 ms

atrk.js

atrk.js

13 ms

js

js

96 ms

conversion.js

conversion.js

73 ms

theia-sticky-sidebar_20191218033327.js

theia-sticky-sidebar_20191218033327.js

327 ms

theia-sticky-sidebar-page_20171003050957.js

theia-sticky-sidebar-page_20171003050957.js

298 ms

firebase-manifest.json

firebase-manifest.json

297 ms

firebase_main.js

firebase_main.js

507 ms

firebase.js

firebase.js

332 ms

hotjar-1300633.js

hotjar-1300633.js

128 ms

fbds.js

fbds.js

53 ms

body_bg_20170713083347.jpg

body_bg_20170713083347.jpg

1051 ms

logo1737_20181029042955.png

logo1737_20181029042955.png

40 ms

icon_comma1_20190208011512.png

icon_comma1_20190208011512.png

25 ms

icon_comma2_20190208011421.png

icon_comma2_20190208011421.png

24 ms

clicktoshare.png

clicktoshare.png

150 ms

icon-set_20170713084604.png

icon-set_20170713084604.png

1036 ms

seprater.jpg

seprater.jpg

1036 ms

newsjdj.php

newsjdj.php

232 ms

ceospeaks.php

ceospeaks.php

534 ms

112 ms

37 ms

32 ms

twitter_followme_20190208011915.jpg

twitter_followme_20190208011915.jpg

294 ms

bootstrap_20221123065850.css

bootstrap_20221123065850.css

144 ms

main_20221123065847.css

main_20221123065847.css

78 ms

css

css

44 ms

font-awesome.min.css

font-awesome.min.css

38 ms

jquery.autocomplete.css

jquery.autocomplete.css

68 ms

body_bg_20181029024218.jpg

body_bg_20181029024218.jpg

80 ms

icon-set_20181029045707.png

icon-set_20181029045707.png

141 ms

seprater_20170713085433.jpg

seprater_20170713085433.jpg

78 ms

bulet_20181029024223.jpg

bulet_20181029024223.jpg

79 ms

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JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

59 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw5aX8.ttf

59 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw5aX8.ttf

59 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw5aX8.ttf

72 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw5aX8.ttf

73 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w5aX8.ttf

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76 ms

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74 ms

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JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w5aX8.ttf

73 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aX8.ttf

73 ms

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75 ms

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79 ms

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116 ms

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79 ms

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116 ms

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115 ms

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116 ms

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116 ms

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117 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

30 ms

Accessibility Review

chemistrycrossing.com accessibility score

86

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

chemistrycrossing.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the notification permission on page load

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

Browser errors were logged to the console

SEO Factors

chemistrycrossing.com SEO score

94

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemistrycrossing.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 Chemistrycrossing.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

chemistrycrossing.com

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