osa-opn.org Website Information
Daily Unique Visits: 8,417
Daily Page Views: 42,085
Income Per Day: $105
Estimated Value: $63,000
This website is located in United States and is using following IP address 65.202.222.221. See the complete list of popular websites hosted in United States.
osa-opn.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
Website osa-opn.org is using the following name servers:
- yogi2.osa.org
- yogi.osa.org
and is probably hosted by UUNET - MCI Communications Services, Inc. d/b/a Verizon Business, US. See the full list of other websites hosted by UUNET - MCI Communications Services, Inc. d/b/a Verizon Business, US.
The highest website osa-opn.org position in Alexa rank database was 42288 and the lowest rank position was 999909. Current position of osa-opn.org in Alexa rank database is 161876.
Desktop speed score of osa-opn.org (54/100) is better than the results of 28.19% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of osa-opn.org (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed score of osa-opn.org (43/100) is better than the results of 22.8% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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osa-opn.org 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.
osa-opn.org 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: OSA-OPN.ORG
Registry Domain ID: D85567324-LROR
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com
Updated Date: 2020-12-08T16:35:35Z
Creation Date: 2002-04-13T18:40:42Z
Registry Expiry Date: 2023-04-13T18:40:42Z
Registrar Registration Expiration Date:
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: domain.operations@web.com
Registrar Abuse Contact Phone: +1.8777228662
Reseller:
Domain Status: ok https://icann.org/epp#ok
Registrant Organization: Optical Society of America
Registrant State/Province: DC
Registrant Country: US
Name Server: YOGI.OSA.ORG
Name Server: YOGI2.OSA.ORG
Name Server: NS1.OSA.ORG
Name Server: NS2.OSA.ORG
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2022-02-18T19:09:22Z
Registry Domain ID: D85567324-LROR
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://www.networksolutions.com
Updated Date: 2020-12-08T16:35:35Z
Creation Date: 2002-04-13T18:40:42Z
Registry Expiry Date: 2023-04-13T18:40:42Z
Registrar Registration Expiration Date:
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: domain.operations@web.com
Registrar Abuse Contact Phone: +1.8777228662
Reseller:
Domain Status: ok https://icann.org/epp#ok
Registrant Organization: Optical Society of America
Registrant State/Province: DC
Registrant Country: US
Name Server: YOGI.OSA.ORG
Name Server: YOGI2.OSA.ORG
Name Server: NS1.OSA.ORG
Name Server: NS2.OSA.ORG
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2022-02-18T19:09:22Z
osa-opn.org server information
Servers Location
osa-opn.org desktop page speed rank
Last tested: 2015-10-21
Desktop Speed
Bad
54/100
osa-opn.org Desktop Speed Test Quick Summary
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priority - 20Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 4 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://partner.googleadservices.com/gpt/pubads_impl_74.js
http://www.osa-opn.org/WebResource.axd?d=Ork7l8WFy…1&t=635588438815688065
http://www.osa-opn.org/ScriptResource.axd?d=ijA5xk…nbb_h4cfgn0&t=7c776dc1
http://www.osa-opn.org/WebResource.axd?d=Ork7l8WFy…1&t=635588438815688065
http://www.osa-opn.org/ScriptResource.axd?d=ijA5xk…nbb_h4cfgn0&t=7c776dc1
Use asynchronous versions of the following scripts:
http://www.googletagservices.com/tag/js/gpt.js
Optimize CSS Delivery of the following:
http://www.osa-opn.org/CMSPages/GetResource.ashx?stylesheetname=opn.Main
http://fonts.googleapis.com/css?family=Open+Sans:3…ic,400,300,600,700,800
http://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677
http://fonts.googleapis.com/css?family=Open+Sans:3…ic,400,300,600,700,800
http://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677
priority - 17Leverage 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:
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http://www.osa-opn.org/opn/js/vendor/anythingslide…es/Pause-gray-icon.png (expiration not specified)
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http://www.osa-opn.org/opn/js/vendor/jquery-ui-1.8.18.custom.min.js (expiration not specified)
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https://cdn.syndication.twimg.com/widgets/timeline…e_codes=true&t=1605998 (60 seconds)
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http://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677 (10 minutes)
http://www.osa-opn.org/CMSPages/GetResource.ashx?stylesheetname=opn.Main (10 minutes)
http://www.osa-opn.org/getmedia/72f6eed0-bd57-4ef5…spx?width=25&height=25 (10 minutes)
http://www.osa-opn.org/getmedia/9ac41d88-3337-4704…spx?width=25&height=25 (10 minutes)
http://www.osa-opn.org/getmedia/cf2351a9-88e0-40fb…spx?width=25&height=25 (10 minutes)
http://www.osa-opn.org/getmedia/fee73774-bf42-4cab…spx?width=25&height=25 (10 minutes)
http://www.googletagservices.com/tag/js/gpt.js (15 minutes)
http://admin.brightcove.com/viewer/upgrade_flash_player2.gif (20 minutes)
http://platform.twitter.com/widgets.js (30 minutes)
http://admin.brightcove.com/js/BrightcoveExperiences.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
http://www.google-analytics.com/ga.js (2 hours)
priority - 10Reduce server response time
priority - 3Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://osa-opn.org/
http://www.osa-opn.org/?r=true
http://www.osa-opn.org/home/?r=true
http://www.osa-opn.org/?r=true
http://www.osa-opn.org/home/?r=true
priority - 0Minify 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 1.5KiB (22% reduction).
Minifying http://www.osa-opn.org/opn/js/main.js could save 1KiB (39% reduction) after compression.
Minifying http://www.osa-opn.org/WebResource.axd?d=Ork7l8WFy…1&t=635588438815688065 could save 524B (12% reduction) after compression.
Minifying http://www.osa-opn.org/WebResource.axd?d=Ork7l8WFy…1&t=635588438815688065 could save 524B (12% reduction) after compression.
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.9KiB (36% reduction).
Minifying http://www.osa-opn.org/opn/js/vendor/opn-ui-theme/…y-ui-1.8.18.custom.css could save 975B (27% reduction) after compression.
Minifying http://www.osa-opn.org/opn/js/vendor/anythingslider/css/anythingslider.css could save 957B (51% reduction) after compression.
Minifying http://www.osa-opn.org/opn/js/vendor/anythingslider/css/anythingslider.css could save 957B (51% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.1KiB (4% reduction).
Minifying http://www.osa-opn.org/home/?r=true could save 1.1KiB (4% reduction) after compression.
osa-opn.org Desktop Resource Breakdown
| Total Resources | 114 |
| Number of Hosts | 16 |
| Static Resources | 71 |
| JavaScript Resources | 19 |
| CSS Resources | 8 |
osa-opn.org mobile page speed rank
Last tested: 2019-08-17
Mobile Speed
Bad
43/100
osa-opn.org Mobile Speed Test Quick Summary
priority - 82Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 803.3KiB (51% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Articles/…50-slider.jpg?ext=.jpg could save 153.5KiB (60% reduction).
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Compressing https://www.osa-opn.org/opn/media/Images/Articles/…ck-slider.jpg?ext=.jpg could save 106.8KiB (61% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Articles/…li-slider.jpg?ext=.jpg could save 95.7KiB (59% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Articles/…50-slider.jpg?ext=.jpg could save 91.8KiB (51% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Articles/…nd-slider.jpg?ext=.jpg could save 88.2KiB (56% reduction).
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Compressing https://tpc.googlesyndication.com/simgad/4598188299802335167 could save 60.3KiB (71% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Articles/…-slider-b.jpg?ext=.jpg could save 51.5KiB (54% reduction).
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Compressing https://www.osa-opn.org/opn/media/Images/Homepage/…pg?ext=.jpg&width=1200 could save 2.7KiB (16% reduction).
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Compressing https://www.osa-opn.org/opn/media/Images/Homepage/…pg?ext=.jpg&width=1200 could save 1.9KiB (14% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/Homepage/…pg?ext=.jpg&width=1200 could save 1.6KiB (16% reduction).
Compressing https://pbs.twimg.com/profile_images/1149407709453…69/cTJmIe9b_bigger.png could save 1.1KiB (19% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/siteimage…hite-sm.png?width=1200 could save 837B (14% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimages/search-btn.png could save 811B (67% reduction).
Compressing https://pbs.twimg.com/profile_images/627142805161426944/gacbjtep_bigger.jpg could save 739B (31% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimage…logo-sm.png?width=1200 could save 344B (13% reduction).
Compressing https://www.osa-opn.org/opn/media/Images/siteimage…hite-xs.png?width=1200 could save 296B (19% reduction).
priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 8 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.osa-opn.org/WebResource.axd?d=pynGkmcF…2&t=636934741199995647
https://www.osa-opn.org/ScriptResource.axd?d=NJmAw…l81&t=ffffffffa580202a
https://www.osa-opn.org/ScriptResource.axd?d=dwY9o…641&t=ffffffffa580202a
https://www.osa-opn.org/ScriptResource.axd?d=eE6V8…gJ-Cvuq9x90&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=mcAAS…bFZprSNe8g1&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=jwf4V…iG7pXeMeJE0&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=HEFpV…jL8GuLZbzT0&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=X6kQK…02y13Af1_g0&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=NJmAw…l81&t=ffffffffa580202a
https://www.osa-opn.org/ScriptResource.axd?d=dwY9o…641&t=ffffffffa580202a
https://www.osa-opn.org/ScriptResource.axd?d=eE6V8…gJ-Cvuq9x90&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=mcAAS…bFZprSNe8g1&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=jwf4V…iG7pXeMeJE0&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=HEFpV…jL8GuLZbzT0&t=27679117
https://www.osa-opn.org/ScriptResource.axd?d=X6kQK…02y13Af1_g0&t=27679117
Optimize CSS Delivery of the following:
https://www.osa-opn.org/CMSPages/GetResource.ashx?stylesheetname=opn.Main
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,greek-ext
https://www.osa-opn.org/opn/css/flickity.css?d=1450452536
https://www.osa-opn.org/opn/css/screenOpn.min.css?v=02122019
https://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,greek-ext
https://www.osa-opn.org/opn/css/flickity.css?d=1450452536
https://www.osa-opn.org/opn/css/screenOpn.min.css?v=02122019
https://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677
priority - 16Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 153KiB (70% reduction).
Compressing https://platform.twitter.com/widgets.js could save 65.6KiB (70% reduction).
Compressing https://platform.twitter.com/css/timeline.9bf5093a…84bf047a.light.ltr.css could save 40.7KiB (77% reduction).
Compressing https://platform.twitter.com/js/moment~timeline~tw…97a366cdbcbb2a39c03.js could save 16.5KiB (67% reduction).
Compressing https://platform.twitter.com/js/timeline.49693ebcd…8708ebca7502c7c343d.js could save 15.6KiB (69% reduction).
Compressing https://platform.twitter.com/widgets/widget_iframe…A%2F%2Fwww.osa-opn.org could save 9.2KiB (61% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimage…o-white.svg?width=1200 could save 2.7KiB (62% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimage…o-black.svg?width=1200 could save 2.7KiB (62% reduction).
Compressing https://platform.twitter.com/css/timeline.9bf5093a…84bf047a.light.ltr.css could save 40.7KiB (77% reduction).
Compressing https://platform.twitter.com/js/moment~timeline~tw…97a366cdbcbb2a39c03.js could save 16.5KiB (67% reduction).
Compressing https://platform.twitter.com/js/timeline.49693ebcd…8708ebca7502c7c343d.js could save 15.6KiB (69% reduction).
Compressing https://platform.twitter.com/widgets/widget_iframe…A%2F%2Fwww.osa-opn.org could save 9.2KiB (61% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimage…o-white.svg?width=1200 could save 2.7KiB (62% reduction).
Compressing https://www.osa-opn.org/opn/media/images/siteimage…o-black.svg?width=1200 could save 2.7KiB (62% reduction).
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://osa-opn.org/
https://www.osa-opn.org/
https://www.osa-opn.org/home/
https://www.osa-opn.org/
https://www.osa-opn.org/home/
priority - 7Leverage 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://www.osa-opn.org/opn/js/main.min.js (expiration not specified)
https://www.osa-opn.org/opn/js/vendor/bootstrap.min.js (expiration not specified)
https://www.osa-opn.org/opn/media/images/siteimages/search-btn.png (expiration not specified)
https://cdn.syndication.twimg.com/timeline/profile…700&with_replies=false (5 minutes)
https://syndication.twitter.com/settings (10 minutes)
https://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677 (10 minutes)
https://www.osa-opn.org/CMSPages/GetResource.ashx?stylesheetname=opn.Main (10 minutes)
https://www.googletagservices.com/tag/js/gpt.js (15 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
https://www.osa-opn.org/opn/js/vendor/bootstrap.min.js (expiration not specified)
https://www.osa-opn.org/opn/media/images/siteimages/search-btn.png (expiration not specified)
https://cdn.syndication.twimg.com/timeline/profile…700&with_replies=false (5 minutes)
https://syndication.twitter.com/settings (10 minutes)
https://www.osa-opn.org/CMSPages/GetResource.ashx?_webparts=677 (10 minutes)
https://www.osa-opn.org/CMSPages/GetResource.ashx?stylesheetname=opn.Main (10 minutes)
https://www.googletagservices.com/tag/js/gpt.js (15 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 1Reduce server response time
In our test, your server responded in 0.30 seconds.
priority - 0Minify 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 426B (45% reduction).
Minifying https://www.osa-opn.org/opn/js/loadJS.js?v=201507091047 could save 426B (45% reduction) after compression.
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 227B (26% reduction).
Minifying https://www.osa-opn.org/opn/css/flickity.css?d=1450452536 could save 227B (26% reduction) after compression.
osa-opn.org Mobile Resource Breakdown
| Total Resources | 106 |
| Number of Hosts | 19 |
| Static Resources | 48 |
| JavaScript Resources | 19 |
| CSS Resources | 8 |
osa-opn.org mobile page usability
Last tested: 2019-08-17
Mobile Usability
Good
99/100
osa-opn.org Mobile Usability Test Quick Summary
priority - 0Size 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 id="mobile-nav-toggle" class="mobile-nav_toggle">Menu</a> is close to 1 other tap targets.osa-opn.org HTML validation
Errors
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Line: 1 Column: 1 - 121
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."
Bad value “pragma” for attribute “http-equiv” on element “meta”.
Line: 6 Column: 1 - 45
"...=UTF-8"> <meta http-equiv="pragma" content="no-cache"> <met..."
"...=UTF-8"> <meta http-equiv="pragma" content="no-cache"> <met..."
Bad value “content-style-type” for attribute “http-equiv” on element “meta”.
Line: 7 Column: 1 - 57
"...-cache"> <meta http-equiv="content-style-type" content="text/css"> <met..."
"...-cache"> <meta http-equiv="content-style-type" content="text/css"> <met..."
Bad value “content-script-type” for attribute “http-equiv” on element “meta”.
Line: 8 Column: 1 - 65
"...xt/css"> <meta http-equiv="content-script-type" content="text/javascript"> <lin..."
"...xt/css"> <meta http-equiv="content-script-type" content="text/javascript"> <lin..."
Bad value “https://fonts.googleapis.com/css?family=Open+Sans:400,500,600,600italic|Noto+Sans:400,700,400italic,700italic|Noto+Serif:400,400italic,700,700italic&subset=latin,greek-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Line: 15 Column: 1 - 219
"...jJg18WY"> <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,500,600,600italic|Noto+Sans:400,700,400italic,700italic|Noto+Serif:400,400italic,700,700italic&subset=latin,greek-ext' rel='stylesheet' type='text/css'> <!--<l..."
"...jJg18WY"> <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,500,600,600italic|Noto+Sans:400,700,400italic,700italic|Noto+Serif:400,400italic,700,700italic&subset=latin,greek-ext' rel='stylesheet' type='text/css'> <!--<l..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/images/siteima…logo-white.svg?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 148 Column: 94 - 558
"... href="/"><img alt="Optics & Photonics News (OPN)" class="img-responsive header_logo--mobile" height="33" src="/opn/media/images/siteimages/OPN-logo-white.svg" width="130" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..." Line: 222 Column: 54 - 503
"... href="/"><img alt="Optics & Photonics News (OPN)" class="header_logo--mobile" height="33" src="/opn/media/images/siteimages/OPN-logo-white.svg" width="130" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..." Line: 534 Column: 72 - 486
"...col-sm-4"><img alt="Optics & Photonics News" class="img-responsive" src="/opn/media/images/siteimages/OPN-logo-white.svg" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></div>..."
"... href="/"><img alt="Optics & Photonics News (OPN)" class="img-responsive header_logo--mobile" height="33" src="/opn/media/images/siteimages/OPN-logo-white.svg" width="130" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..." Line: 222 Column: 54 - 503
"... href="/"><img alt="Optics & Photonics News (OPN)" class="header_logo--mobile" height="33" src="/opn/media/images/siteimages/OPN-logo-white.svg" width="130" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..." Line: 534 Column: 72 - 486
"...col-sm-4"><img alt="Optics & Photonics News" class="img-responsive" src="/opn/media/images/siteimages/OPN-logo-white.svg" srcset="/opn/media/images/siteimages/OPN-logo-white.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-white.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-white.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-white.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></div>..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/images/siteima…sa-logo-sm.png?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 203 Column: 113 - 510
"...osa.org/"><img alt="OSA | The Optical Society" src="/opn/media/images/siteimages/osa-logo-sm.png" class="img-responsive" srcset="/opn/media/images/siteimages/osa-logo-sm.png?width=480 480w, /opn/media/images/siteimages/osa-logo-sm.png?width=768 768w, /opn/media/images/siteimages/osa-logo-sm.png?width=992 992w, /opn/media/images/siteimages/osa-logo-sm.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> <..."
"...osa.org/"><img alt="OSA | The Optical Society" src="/opn/media/images/siteimages/osa-logo-sm.png" class="img-responsive" srcset="/opn/media/images/siteimages/osa-logo-sm.png?width=480 480w, /opn/media/images/siteimages/osa-logo-sm.png?width=768 768w, /opn/media/images/siteimages/osa-logo-sm.png?width=992 992w, /opn/media/images/siteimages/osa-logo-sm.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> <..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/images/siteima…logo-black.svg?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 253 Column: 129 - 541
"...opn-logo"><img class="img-responsive" src="/opn/media/images/siteimages/OPN-logo-black.svg" alt="Optics and Photonics News" srcset="/opn/media/images/siteimages/OPN-logo-black.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-black.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-black.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-black.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"><span ..."
"...opn-logo"><img class="img-responsive" src="/opn/media/images/siteimages/OPN-logo-black.svg" alt="Optics and Photonics News" srcset="/opn/media/images/siteimages/OPN-logo-black.svg?width=480 480w, /opn/media/images/siteimages/OPN-logo-black.svg?width=768 768w, /opn/media/images/siteimages/OPN-logo-black.svg?width=992 992w, /opn/media/images/siteimages/OPN-logo-black.svg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"><span ..."
Attribute “alt” not allowed on element “span” at this point.
Line: 258 Column: 100 - 147
"...magazine"><span alt="Twitter" class="fa fa-twitter fa-lg"></span..." Line: 259 Column: 108 - 157
"...lsociety"><span alt="Facebook" class="fa fa-facebook fa-lg"></span..." Line: 260 Column: 143 - 192
"...h-logo"><span alt="LinkedIn" class="fa fa-linkedin fa-lg"></span><..." Line: 262 Column: 104 - 151
"...r/osaopn"><span alt="YouTube" class="fa fa-youtube fa-lg"></span..." Line: 263 Column: 80 - 119
"...ome/rss/"><span alt="RSS" class="fa fa-rss fa-lg"></span..."
"...magazine"><span alt="Twitter" class="fa fa-twitter fa-lg"></span..." Line: 259 Column: 108 - 157
"...lsociety"><span alt="Facebook" class="fa fa-facebook fa-lg"></span..." Line: 260 Column: 143 - 192
"...h-logo"><span alt="LinkedIn" class="fa fa-linkedin fa-lg"></span><..." Line: 262 Column: 104 - 151
"...r/osaopn"><span alt="YouTube" class="fa fa-youtube fa-lg"></span..." Line: 263 Column: 80 - 119
"...ome/rss/"><span alt="RSS" class="fa fa-rss fa-lg"></span..."
Attribute “alt” not allowed on element “div” at this point.
Line: 303 Column: 1 - 217
"...r-width"> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/Coffey-750x450-img1-2.jpg?ext=.jpg&slimmage=true)" alt="Optogenetics: Controlling Neurons with Photons "> <div..." Line: 312 Column: 1 - 201
"...v> </div> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/Wang-750x450-img1.jpg?ext=.jpg&slimmage=true)" alt="Multiscale Photoacoustic Tomography"> <div..." Line: 321 Column: 1 - 220
"...v> </div> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/RubenDunlop-750x450-img1.jpg?ext=.jpg&slimmage=true)" alt="Optical Tweezers Bring Micromachines to Biology"> <div..."
"...r-width"> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/Coffey-750x450-img1-2.jpg?ext=.jpg&slimmage=true)" alt="Optogenetics: Controlling Neurons with Photons "> <div..." Line: 312 Column: 1 - 201
"...v> </div> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/Wang-750x450-img1.jpg?ext=.jpg&slimmage=true)" alt="Multiscale Photoacoustic Tomography"> <div..." Line: 321 Column: 1 - 220
"...v> </div> <div class="gallery-cell opn-slide" style="background-image: url(/opn/media/Images/Articles/2018/1804/Features/RubenDunlop-750x450-img1.jpg?ext=.jpg&slimmage=true)" alt="Optical Tweezers Bring Micromachines to Biology"> <div..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/Homepag…n.jpg?ext=.jpg&width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 343 Column: 13 - 553
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg" alt="Storing Holograms on Nanoparticle Films" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 365 Column: 13 - 573
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg" alt="Bio-Inspired Cameras for Undersea GPS and Surgical Guidance" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 409 Column: 13 - 559
"... <img src="/opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg" alt="Putting Metallic Nanoparticles in Their Place" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 442 Column: 13 - 557
"... <img src="/opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg" alt="Future Camouflage Materials from Squid Skin" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg" alt="Storing Holograms on Nanoparticle Films" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-11Apr-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 365 Column: 13 - 573
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg" alt="Bio-Inspired Cameras for Undersea GPS and Surgical Guidance" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-07Apr-Icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 409 Column: 13 - 559
"... <img src="/opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg" alt="Putting Metallic Nanoparticles in Their Place" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0318/News-30Mar-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 442 Column: 13 - 557
"... <img src="/opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg" alt="Future Camouflage Materials from Squid Skin" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0318/News-29Mar-icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/Career/…2.jpg?ext=.jpg&width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 354 Column: 13 - 545
"... <img src="/opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg" alt="Kurt Bernardo Wolf on Being Adaptable in the Pursuit of Science " class="img-responsive" srcset="/opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg" alt="Kurt Bernardo Wolf on Being Adaptable in the Pursuit of Science " class="img-responsive" srcset="/opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Career/2018/Careers-10Apr-Icon2.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/Homepag…8.jpg?ext=.jpg&width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 376 Column: 13 - 617
"... <img src="/opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg" alt="Ultra-High-Density Magnetic Recording " class="img-responsive" srcset="/opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 431 Column: 13 - 612
"... <img src="/opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg" alt="Hybrid Phonons in Nanostructures " class="img-responsive" srcset="/opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg" alt="Ultra-High-Density Magnetic Recording " class="img-responsive" srcset="/opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Book%20Reviews/2018/0418/books-img04_05_18.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..." Line: 431 Column: 13 - 612
"... <img src="/opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg" alt="Hybrid Phonons in Nanostructures " class="img-responsive" srcset="/opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Book%20Reviews/2018/0318/books-img03_29_18.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/Homepag…t.jpg?ext=.jpg&width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 387 Column: 13 - 581
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg" alt="Adding Flexibility to Optically Rewritable LCDs" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg" alt="Adding Flexibility to Optically Rewritable LCDs" class="img-responsive" srcset="/opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Homepage/Newsroom/0418/News-04Apr-icon_alt.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/siteima…laceholder.jpg?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 398 Column: 13 - 502
"... <img src="/opn/media/Images/siteimages/OPN-industry-placeholder.jpg" alt="U.K. Confirms £20 Million in Quantum Pioneer Funding" class="img-responsive" srcset="/opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=480 480w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=768 768w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=992 992w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/siteimages/OPN-industry-placeholder.jpg" alt="U.K. Confirms £20 Million in Quantum Pioneer Funding" class="img-responsive" srcset="/opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=480 480w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=768 768w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=992 992w, /opn/media/Images/siteimages/OPN-industry-placeholder.jpg?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/Career/…n.jpg?ext=.jpg&width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 420 Column: 13 - 516
"... <img src="/opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg" alt="Tina Kidger on Success Through Confidence " class="img-responsive" srcset="/opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
"... <img src="/opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg" alt="Tina Kidger on Success Through Confidence " class="img-responsive" srcset="/opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=480 480w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=768 768w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=992 992w, /opn/media/Images/Career/2018/Careers-27Mar-Icon.jpg?ext=.jpg&width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> ..."
End tag “p” implied, but there were open elements.
Line: 543 Column: 210 - 212
"...of Use</a><p></smal..."
"...of Use</a><p></smal..."
Unclosed element “small”.
Line: 543 Column: 1 - 7
"...mall><br> <small><a hre..."
"...mall><br> <small><a hre..."
No “small” element in scope but a “small” end tag seen.
Line: 543 Column: 213 - 220
"...Use</a><p></small></div>..."
"...Use</a><p></small></div>..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/siteima…o-white-sm.png?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 543 Column: 304 - 741
"...osa.org/"><img alt="The Optical Society | OSA" class="img-responsive hidden-sm" src="/opn/media/Images/siteimages/osa-logo-white-sm.png" srcset="/opn/media/Images/siteimages/osa-logo-white-sm.png?width=480 480w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=768 768w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=992 992w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> <..."
"...osa.org/"><img alt="The Optical Society | OSA" class="img-responsive hidden-sm" src="/opn/media/Images/siteimages/osa-logo-white-sm.png" srcset="/opn/media/Images/siteimages/osa-logo-white-sm.png?width=480 480w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=768 768w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=992 992w, /opn/media/Images/siteimages/osa-logo-white-sm.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a> <..."
Bad value for attribute “srcset” on element “img”: No width specified for image “/opn/media/Images/siteima…o-white-xs.png?width=1200”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Line: 544 Column: 31 - 469
"...osa.org/"><img alt="The Optical Society | OSA" class="img-responsive visible-sm" src="/opn/media/Images/siteimages/osa-logo-white-xs.png" srcset="/opn/media/Images/siteimages/osa-logo-white-xs.png?width=480 480w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=768 768w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=992 992w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..."
"...osa.org/"><img alt="The Optical Society | OSA" class="img-responsive visible-sm" src="/opn/media/Images/siteimages/osa-logo-white-xs.png" srcset="/opn/media/Images/siteimages/osa-logo-white-xs.png?width=480 480w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=768 768w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=992 992w, /opn/media/Images/siteimages/osa-logo-white-xs.png?width=1200" sizes="(min-width: 768px) 50vw, 100vw"></a></..."
Warnings
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Line: 2 Column: 122 - 43
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head..."
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head..."
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osa-opn.org 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.
osa-opn.org 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.