chemweb.com Website Information

Daily Unique Visits: 6,112

Daily Page Views: 24,448

Income Per Day: $68

Estimated Value: $36,720

This website is located in United States and is using following IP address 146.148.79.37. See the complete list of popular websites hosted in United States.

chemweb.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website chemweb.com is using the following name servers:

ns1.systemdns.com
ns3.systemdns.com
ns2.systemdns.com

and is probably hosted by TUCOWS - Tucows.com Co., CA. See the full list of other websites hosted by TUCOWS - Tucows.com Co., CA.

The highest website chemweb.com position in Alexa rank database was 76403 and the lowest rank position was 998103. Current position of chemweb.com in Alexa rank database is 205323.

Desktop speed score of chemweb.com (73/100) is better than the results of 56.16% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of chemweb.com (66/100) is better than the results of 14.96% of other sites and means that the page is not mobile-friendly.

Mobile speed score of chemweb.com (52/100) is better than the results of 37.6% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

chemweb.com Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

chemweb.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: CHEMWEB.COM
Registry Domain ID: 1913935_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucows.com
Updated Date: 2022-05-13T04:46:02Z
Creation Date: 1997-06-12T04:00:00Z
Registry Expiry Date: 2023-06-11T04:00:00Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email: domainabuse@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.SYSTEMDNS.COM
Name Server: NS2.SYSTEMDNS.COM
Name Server: NS3.SYSTEMDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-07-14T23:40:41Z

chemweb.com server information

Servers Location

chemweb.com desktop page speed rank

Last tested: 2019-02-07

Desktop Speed Medium

73/100

chemweb.com Desktop Speed Test Quick Summary

priority - 22Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 8 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://ads.chemweb.com/www/delivery/spcjs.php
https://ads.chemweb.com/www/delivery/spc.php?zones…https%3A//chemweb.com/
https://ads.chemweb.com/www/delivery/fl.js
https://chemweb.com/sites/default/files/js/js_vDrW…IC6ml2QNkcfvfP5CVFs.js
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Optimize CSS Delivery of the following:

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https://chemweb.com/sites/default/files/css/css_wJ…FAWs9KEIkGH2YZJ0S0.css
https://chemweb.com/sites/default/files/css/css_Up…ZP8b9HG73CsDUroFdE.css
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https://fonts.googleapis.com/css?family=Source+San…o|Open+Sans|Droid+Sans

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 102.3KiB (82% reduction).

Compressing and resizing https://chemweb.com/sites/default/files/images/alchemistheader3.jpg could save 54KiB (92% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/events.png could save 22.5KiB (93% reduction).
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Compressing https://chemweb.com/sites/all/themes/chemzen/images/journals.png could save 3KiB (72% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/alchemist.png could save 2.9KiB (65% reduction).

priority - 2Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

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Minifying https://chemweb.com/sites/default/files/js/js_IRIj…-EFvOi1pxsgtthlGJHM.js could save 276B (75% reduction) after compression.

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://ads.chemweb.com/www/delivery/fl.js (expiration not specified)
https://www.google-analytics.com/analytics.js (2 hours)
https://ads.chemweb.com/www/delivery/spcjs.php (24 hours)

chemweb.com Desktop Resource Breakdown

Total Resources	43
Number of Hosts	9
Static Resources	29
JavaScript Resources	10
CSS Resources	6

chemweb.com mobile page speed rank

Last tested: 2019-02-07

Mobile Speed Bad

52/100

chemweb.com Mobile Speed Test Quick Summary

priority - 88Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 8 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 93.4KiB (75% reduction).

Compressing https://chemweb.com/sites/default/files/images/alchemistheader3.jpg could save 45.1KiB (77% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/events.png could save 22.5KiB (93% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/logo.png could save 4.2KiB (34% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/go.png could save 3.3KiB (81% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/databases.png could save 3.2KiB (70% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/home-on.png could save 3.2KiB (76% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/news.png could save 3.1KiB (72% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/arrowbutton.png could save 3KiB (84% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/journals.png could save 3KiB (72% reduction).
Compressing https://chemweb.com/sites/all/themes/chemzen/images/alchemist.png could save 2.9KiB (65% reduction).

priority - 2Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://ads.chemweb.com/www/delivery/fl.js (expiration not specified)
https://www.google-analytics.com/analytics.js (2 hours)
https://ads.chemweb.com/www/delivery/spcjs.php (24 hours)

priority - 2Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 16.4KiB (26% reduction).

chemweb.com Mobile Resource Breakdown

Total Resources	43
Number of Hosts	9
Static Resources	29
JavaScript Resources	10
CSS Resources	6

chemweb.com mobile page usability

Last tested: 2019-02-07

Mobile Usability Medium

66/100

chemweb.com Mobile Usability Test Quick Summary

priority - 50Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 990 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <span id="active-quicktabs-tab" class="element-invisible">(active tab)</span> falls outside the viewport.
The element

<a id="quicktabs-tab-…eb_searchbox-1" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Journals</a>

falls outside the viewport.
The element

<a id="quicktabs-tab-…eb_searchbox-2" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Events</a>

falls outside the viewport.
The element

<a id="quicktabs-tab-…eb_searchbox-3" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">News</a>

falls outside the viewport.
The element

<a id="quicktabs-tab-…eb_searchbox-4" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Alchemist</a>

falls outside the viewport.
The element <h2 class="element-invisible">Search form</h2> falls outside the viewport.
The element <input id="edit-search-block-form--2" type="text" name="search_block_form" class="form-text"> falls outside the viewport.
The element <input id="edit-submit" type="image" name="submit" class="form-submit"> falls outside the viewport.
The element <p>CHEMWEB and the GDPR</p> falls outside the viewport.
The element <p>The European U…non-EU users.</p> falls outside the viewport.
The element <p>To stay in com…il newsletter.</p> falls outside the viewport.
The element <span>access to abst…d disciplines.</span> falls outside the viewport.
The element <p></p> falls outside the viewport.
The element <a href="https://ads.ch…F9781420084696">Chemicals, Env…nt Perspective</a> falls outside the viewport.
The element <td class="authorLine">Edited by Phil…; Ravi Agarwal</td> falls outside the viewport.
The element <p>This book pres…opportunities.</p> falls outside the viewport.
The element <br> falls outside the viewport.
The element <br> falls outside the viewport.
The element <b>KLM12</b> falls outside the viewport.
The element <p>Click here to…bout the book.</p> falls outside the viewport.
The element <p>Journal Abstra…all journals.</p> falls outside the viewport.
The element <a href="events">conference, tr…on-line course</a> falls outside the viewport.
The element <a href="events">Events page.</a> falls outside the viewport.
The element <a href="content/help/s…tting-an-event">Adding an Even…easy and free</a> falls outside the viewport.
The element <a href="journals">abstracts</a> falls outside the viewport.
The element <a href="alchemist">Alchemist newsletter</a> falls outside the viewport.
The element <div id="navigation"></div> falls outside the viewport.
The element <img src="https://ads.ch…ontenttype=gif"> falls outside the viewport.
The element <img src="/sites/default…istheader3.jpg"> falls outside the viewport.
The element <a href="/user/register">Join now</a> falls outside the viewport.
The element <span class="date-display-single">May 22, 2018</span> falls outside the viewport.
The element <span class="alchemist-header">contents</span> falls outside the viewport.
The element <iframe src="https://www.fa…orscheme=light"> falls outside the viewport.
The element <a href="/alchemist/#info_title">publishers' select</a> falls outside the viewport.
The element <img src="https://www.ch…images/new.gif"> falls outside the viewport.
The element <a href="/alchemist/#overview">overview</a> falls outside the viewport.
The element <a href="/alchemist/#Po…shape shifters">materials:</a> falls outside the viewport.
The element <a href="/alchemist/#Th…e ozone eaters">environment:</a> falls outside the viewport.
The element <a href="/alchemist/#Beyond the boil">physical:</a> falls outside the viewport.
The element <a href="/alchemist/#Op…fingerprinting">optical:</a> falls outside the viewport.
The element <a href="/alchemist/#Re…rma for cancer">pharma:</a> falls outside the viewport.
The element <a href="/alchemist/#Sustainable wins">award:</a> falls outside the viewport.
The element <a href="/content/about">About Us</a> falls outside the viewport.
The element <a href="/content/chemweb_ratecard.pdf">Advertising</a> falls outside the viewport.
The element <a href="/contact">Contact Us</a> falls outside the viewport.
The element <br> falls outside the viewport.
The element <a href="/content/terms/">©1999-2015 Che…ustry.com Inc.</a> falls outside the viewport.

priority - 3Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="#main-menu" class="element-invisi…ment-focusable">Jump to navigation</a> is close to 1 other tap targets.

The tap target

<a id="quicktabs-tab-…eb_searchbox-0" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Site(active tab)</a>

is close to 1 other tap targets.

The tap target

<a id="quicktabs-tab-…eb_searchbox-0" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Site(active tab)</a>

is close to 2 other tap targets.

The tap target

<a id="quicktabs-tab-…eb_searchbox-1" href="/node/1309?qt-…mweb_searchbox" class="quicktabs-tab…ce-2-processed">Journals</a>

is close to 1 other tap targets.
The tap target <a href="/alchemist/#info_title">publishers' select</a> and 7 others are close to other tap targets.
The tap target <a href="/content/about">About Us</a> and 2 others are close to other tap targets.

chemweb.com HTML validation

Warnings

The “banner” role is unnecessary for element “header”.

Line: 56 Column: 3 - 36
"...page"> <header id="header" role="banner"> ..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 163 Column: 37 - 67
"...red-book"><script type='text/javascript'><!--//..." Line: 166 Column: 40 - 70
"...-journal"><script type='text/javascript'><!--//..." Line: 230 Column: 3 - 33
"... <script type='text/javascript'><!--//..." Line: 251 Column: 3 - 33
"... <script type='text/javascript'><!--//..."

Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.

Line: 155 Column: 1 - 80
"... <article class="node-1309 node node-page node-promoted view-mode-full clearfix"> ..."

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 226 Column: 11 - 70
"... <section class="region region-sidebar-first column sidebar"> <..."

Errors

Element “input” is missing required attribute “alt”.

Line: 80 Column: 58 - 328
"...-actions"><input onmouseover="this.src='/sites/all/themes/chemzen/images/go-on.png'" onmouseout="this.src='/sites/all/themes/chemzen/images/go.png'" type="image" id="edit-submit" name="submit" src="/sites/all/themes/chemzen/images/go.png" class="form-submit" /></div>..." Line: 94 Column: 61 - 334
"...tions--2"><input onmouseover="this.src='/sites/all/themes/chemzen/images/go-on.png'" onmouseout="this.src='/sites/all/themes/chemzen/images/go.png'" type="image" id="edit-submit--2" name="submit" src="/sites/all/themes/chemzen/images/go.png" class="form-submit" /></div>..." Line: 108 Column: 61 - 334
"...tions--3"><input onmouseover="this.src='/sites/all/themes/chemzen/images/go-on.png'" onmouseout="this.src='/sites/all/themes/chemzen/images/go.png'" type="image" id="edit-submit--3" name="submit" src="/sites/all/themes/chemzen/images/go.png" class="form-submit" /></div>..." Line: 122 Column: 61 - 334
"...tions--4"><input onmouseover="this.src='/sites/all/themes/chemzen/images/go-on.png'" onmouseout="this.src='/sites/all/themes/chemzen/images/go.png'" type="image" id="edit-submit--4" name="submit" src="/sites/all/themes/chemzen/images/go.png" class="form-submit" /></div>..." Line: 136 Column: 61 - 334
"...tions--5"><input onmouseover="this.src='/sites/all/themes/chemzen/images/go-on.png'" onmouseout="this.src='/sites/all/themes/chemzen/images/go.png'" type="image" id="edit-submit--5" name="submit" src="/sites/all/themes/chemzen/images/go.png" class="form-submit" /></div>..."

End tag “p” seen, but there were open elements.

Line: 161 Column: 289 - 292
"...sciplines.</p> <p>&n..."

Unclosed element “span”.

Line: 161 Column: 40 - 74
"...ffer <span style="color: rgb(0, 0, 0);"> ..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 260 Column: 58 - 119
"...lchemist"><img src="/sites/default/files/images/alchemistheader3.jpg" /></a></..." Line: 269 Column: 105 - 174
"...elect </a><img src="https://www.chemweb.com/sites/default/files/images/new.gif"></div>..."

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 263 Column: 1 - 278
"...ts</span> <iframe src="https://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fwww.chemweb.com%2Falchemist&layout=button_count&show_faces=false&action=like&colorscheme=light" scrolling="no" frameborder="0" allowtransparency="true" height="20" width="80" align="right"></ifra..."

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

The “align” attribute on the “iframe” element is obsolete. Use CSS instead.

Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)

Line: 269 Column: 13 - 48
"... <h3><div class="alchemist-link-header"><a hre..." Line: 270 Column: 1 - 36
"...f"></div> <div class="alchemist-link-header"><a hre..."

Bad value “/alchemist/#Porous shape shifters” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 273 Column: 82 - 125
"...-content"><a href="/alchemist/#Porous shape shifters">materi..."

Bad value “/alchemist/#The return of the ozone eaters” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 276 Column: 82 - 134
"...-content"><a href="/alchemist/#The return of the ozone eaters">enviro..."

Bad value “/alchemist/#Beyond the boil” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 279 Column: 82 - 119
"...-content"><a href="/alchemist/#Beyond the boil">physic..."

Bad value “/alchemist/#Optical fingerprinting” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 282 Column: 82 - 126
"...-content"><a href="/alchemist/#Optical fingerprinting">optica..."

Bad value “/alchemist/#Repurposed pharma for cancer” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 285 Column: 82 - 132
"...-content"><a href="/alchemist/#Repurposed pharma for cancer">pharma..."

Bad value “/alchemist/#Sustainable wins” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Line: 288 Column: 82 - 120
"...-content"><a href="/alchemist/#Sustainable wins">award:..."

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chemweb.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

chemweb.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

CHEMWEB.COM ChemWeb

chemweb.com Website Information

Advertisement

chemweb.com Alexa Rank

chemweb.com whois

chemweb.com server information

Servers Location

chemweb.com desktop page speed rank

chemweb.com Desktop Speed Test Quick Summary

priority - 22Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 8 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 102.3KiB (82% reduction).

priority - 2Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 16.4KiB (26% reduction).

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

chemweb.com Desktop Resource Breakdown

chemweb.com mobile page speed rank

chemweb.com Mobile Speed Test Quick Summary

priority - 88Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 8 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 93.4KiB (75% reduction).

priority - 2Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 2Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 16.4KiB (26% reduction).

chemweb.com Mobile Resource Breakdown

chemweb.com mobile page usability

chemweb.com Mobile Usability Test Quick Summary

priority - 50Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 990 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

priority - 3Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

chemweb.com HTML validation

Warnings

The “banner” role is unnecessary for element “header”.

The “type” attribute is unnecessary for JavaScript resources.

Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Errors

Element “input” is missing required attribute “alt”.

End tag “p” seen, but there were open elements.

Unclosed element “span”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

The “align” attribute on the “iframe” element is obsolete. Use CSS instead.

Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)

Bad value “/alchemist/#Porous shape shifters” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “/alchemist/#The return of the ozone eaters” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “/alchemist/#Beyond the boil” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “/alchemist/#Optical fingerprinting” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “/alchemist/#Repurposed pharma for cancer” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

Bad value “/alchemist/#Sustainable wins” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.

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