pbskids.org Website Information
Daily Unique Visits: 421,423
Daily Page Views: 3,371,384
Income Per Day: $3,371
Estimated Value: $3,640,680
pbskids.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
No name server records were found.
and is probably hosted by AMAZON-02 - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.
The highest website pbskids.org position in Alexa rank database was 3543 and the lowest rank position was 3695. Current position of pbskids.org in Alexa rank database is 3616.
Desktop speed score of pbskids.org (47/100) is better than the results of 20.85% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of pbskids.org (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of pbskids.org (18/100) is better than the results of 3.73% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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pbskids.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.
pbskids.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.
Registry Domain ID: b6f013a926da4f71baf68eda4b7f7d53-LROR
Registrar WHOIS Server: http://whois.cscglobal.com
Registrar URL: http://www.cscglobal.com/global/web/csc/digital-brand
Updated Date: 2022-04-05T05:17:34Z
Creation Date: 1999-04-09T04:00:00Z
Registry Expiry Date: 2023-04-09T04:00:00Z
Registrar: CSC Corporate Domains, Inc.
Registrar IANA ID: 299
Registrar Abuse Contact Email: domainabuse@cscglobal.com
Registrar Abuse Contact Phone: +1.8887802723
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Public Broadcasting Service
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: VA
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns-1230.awsdns-25.org
Name Server: ns-1674.awsdns-17.co.uk
Name Server: ns-193.awsdns-24.com
Name Server: ns-806.awsdns-36.net
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2023-02-18T20:25:44Z
pbskids.org server information
Servers Location
pbskids.org desktop page speed rank
Last tested: 2016-06-12
pbskids.org Desktop Speed Test Quick Summary
priority - 63Leverage 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://pbskids.org/shell/images/content/badges/bad…iters-contest-2013.svg (expiration not specified)
http://pbskids.org/shell/images/content/mega-promos/megapromo_explore.jpg (expiration not specified)
http://pbskids.org/shell/images/content/pbs-kids-logo.svg (expiration not specified)
http://pbskids.org/shell/images/content/show-bubbl…/bob-the-builder_2.png (expiration not specified)
http://pbskids.org/shell/images/content/show-bubbles/square/nature-cat.png (expiration not specified)
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http://pbskids.org/shell/js/megapromo/megapromos.json (expiration not specified)
http://pbskids.org/shell/js/the-wheel/wheel-mobile-config.json (expiration not specified)
http://pbskids.org/shell/templates/home/config/theme-config.json (expiration not specified)
http://pbskids.org/shell/themes/flower-fun/assets/img/LoadingSprites.json (expiration not specified)
http://pbskids.org/shell/themes/flower-fun/assets/img/LoadingSprites.png (expiration not specified)
http://pbskids.org/shell/themes/flower-fun/assets/img/bkg.jpg (expiration not specified)
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http://www.googletagmanager.com/gtm.js?id=GTM-MR8JHB (16.2 minutes)
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http://www-tc.pbs.org/images/stations/standard/KCTS.gif (60 minutes)
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http://www-tc.pbskids.org/messages/scripts/messages.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/orange-peanut/site/js/lib/sound.js (60 minutes)
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http://www-tc.pbskids.org/shell/fonts/ColfaxWebMedium.woff (60 minutes)
http://www-tc.pbskids.org/shell/fonts/ColfaxWebRegular.woff (60 minutes)
http://www-tc.pbskids.org/shell/fonts/pbskidsheadline-regular-webfont.woff (60 minutes)
http://www-tc.pbskids.org/shell/images/content/sho…bles/circle/arthur.png (60 minutes)
http://www-tc.pbskids.org/shell/images/content/sho…/bob-the-builder_2.png (60 minutes)
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http://www-tc.pbskids.org/shell/images/content/sho…cle/dinosaur-train.png (60 minutes)
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http://www-tc.pbskids.org/shell/js/headband/headband.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/imagesloaded.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/jquery/jque…ly.min.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/jquery/jque…custom.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/jquery/plug…ng-1.3.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/jquery/plug…er.min.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/kinetic-v5.1.0.min.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/lib/swfobject-2.2.min.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/megapromo/megapromo.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/shell.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/the-wheel/the-wheel.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/js/views/home.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/styles/css/headband.css (60 minutes)
http://www-tc.pbskids.org/shell/styles/css/home.css (60 minutes)
http://www-tc.pbskids.org/shell/themes/flower-fun/js/theme.js?version=1.71 (60 minutes)
http://www-tc.pbskids.org/shell/themes/flower-fun/styles/theme.css (60 minutes)
http://www-tc.pbskids.org/super-vision/faye-client…ection.js?version=1.71 (60 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
http://www.google-analytics.com/ga.js (2 hours)
http://cms-tc.pbskids.org/global/mezzanines/games/…ur-arthur-delivers.jpg (12 hours)
http://cms-tc.pbskids.org/global/mezzanines/games/…eehouse-designer_8.jpg (12 hours)
http://cms-tc.pbskids.org/global/mezzanines/games/…ilder-bobs-toolbox.jpg (12 hours)
http://cms-tc.pbskids.org/global/mezzanines/games/…borhood-sandcastle.jpg (12 hours)
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http://cms-tc.pbskids.org/global/mezzanines/games/…train-station-race.jpg (12 hours)
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priority - 36Optimize images
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priority - 12Minify JavaScript
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Minify JavaScript for the following resources to reduce their size by 112.9KiB (35% reduction).
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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://pbskids.org/orange-peanut/site/js/lib/sound.js
http://pbskids.org/shell/themes/flower-fun/js/flower-fun.js
http://pbskids.org/js/loader/lib/PBS.KIDS.require.js
http://pbskids.org/js/ga-current.js
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priority - 100Leverage browser caching
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https://cms-tc.pbskids.org/global/mezzanines/games…dom-kart-kingdom_5.jpg (12 hours)
https://cms-tc.pbskids.org/global/mezzanines/games…plore-with-molly_1.jpg (12 hours)
https://cms-tc.pbskids.org/global/mezzanines/games…quad-build-a-squad.jpg (12 hours)
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https://cms-tc.pbskids.org/global/mezzanines/games…cketship-creator_1.jpg (12 hours)
https://cms-tc.pbskids.org/global/mezzanines/games…-mindys-moonball_2.jpg (12 hours)
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https://cms-tc.pbskids.org/global/mezzanines/games…-riddle-hero-maker.jpg (12 hours)
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priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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Optimize CSS Delivery of the following:
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priority - 11Minify 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 106.6KiB (43% reduction).
Minifying https://pbskids.org/js/loader/lib/PBS.KIDS.require.js could save 12.5KiB (62% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/handlebars-v1.3.0.js?version=1.72 could save 6.5KiB (31% reduction) after compression.
Minifying https://www-tc.pbskids.org/shell/js/headband/headband.js?version=1.72 could save 5.9KiB (37% reduction) after compression.
Minifying https://www-tc.pbskids.org/shell/js/lib/imagesloaded.js?version=1.72 could save 4KiB (56% reduction) after compression.
Minifying https://www-tc.pbskids.org/shell/js/lib/jquery/jqu…custom.js?version=1.72 could save 3.3KiB (51% reduction) after compression.
Minifying https://www-tc.pbskids.org/shell/js/core/PBS.KIDS.playnice.js could save 3.2KiB (35% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/PBS.KIDS.EventEmitter.js?version=1.72 could save 2.8KiB (69% reduction) after compression.
Minifying https://pbskids.org/shell/themes/ocean-fun/js/OceanFun.js could save 2.4KiB (22% reduction) after compression.
Minifying https://www-tc.pbskids.org/shell/js/the-wheel/the-wheel.js?version=1.72 could save 2.3KiB (23% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/PBS.KIDS.text.js?version=1.72 could save 2.2KiB (48% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/login/login.js?version=1.72 could save 2.1KiB (25% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/bridge-overlay/bridge.js?version=1.72 could save 1.9KiB (37% reduction) after compression.
Minifying https://www-tc.pbskids.org/js/lib/localization/localization.js?version=1.72 could save 1.7KiB (32% reduction) after compression.
Minifying https://pbskids.org/shell/themes/ocean-fun/js/vendor/Signal.js could save 1.6KiB (62% reduction) after compression.
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pbskids.org Mobile Resource Breakdown
Total Resources | 174 |
Number of Hosts | 13 |
Static Resources | 141 |
JavaScript Resources | 63 |
CSS Resources | 5 |
pbskids.org mobile page usability
Last tested: 2019-12-02
pbskids.org HTML validation
Errors
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
"...f-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> ..."
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
"...ript> <link rel="apple-touch-icon-precomposed" sizes="57x57" href="http://www-tc.pbskids.org/shell/images/content/apple-icon-57x57-precomposed.png" /> <..." Line: 28 Column: 5 - 148
"...g" /> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="http://www-tc.pbskids.org/shell/images/content/apple-icon-72x72-precomposed.png" /> <..." Line: 29 Column: 5 - 152
"...g" /> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="http://www-tc.pbskids.org/shell/images/content/apple-icon-114x114-precomposed.png" /> </..."
Bad value “user” for attribute “rel” on element “a”: The string “user” is not a registered keyword.
"... <a href="" class="avatar" rel="user" title="Visit Your Profile"> ..."
Bad value “” for attribute “src” on element “img”: Must be non-empty.
"... <img alt="Your Avatar" src=""/> ..." Line: 184 Column: 7 - 41
"...em> <img class="show-graphic" src="" /> ..." Line: 191 Column: 7 - 41
"...em> <img class="show-graphic" src="" /> ..." Line: 198 Column: 7 - 41
"...em> <img class="show-graphic" src="" /> ..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"...em> <img class="show-graphic" src="" /> ..." Line: 191 Column: 7 - 41
"...em> <img class="show-graphic" src="" /> ..." Line: 198 Column: 7 - 41
"...em> <img class="show-graphic" src="" /> ..." Line: 208 Column: 5 - 98
"...per"> <img class="theme-mini-static" src='/shell/themes/polaroid-winter/images/polaroid-mini.svg' /> </div..." Line: 716 Column: - 79
"......"
Element “img” is missing required attribute “src”.
"...html"> <img alt="Odd Cases" data-carson-src="/pbskids/shell/images/content/games/odd-squad-odd-cases.jpg" data-carson-size="medium" /> </a..." Line: 248 Column: 4 - 147
"...ble/"> <img alt="Watts of Trouble" data-carson-src="/pbskids/shell/images/content/games/cyberchase-watts-of-trouble_2.jpg" data-carson-size="medium" /> </a..." Line: 254 Column: 4 - 164
"...eats"> <img alt="Arthur's Tricks and Treats" data-carson-src="/pbskids/shell/images/content/games/arthur-arthurs-tricks-and-treats.jpg" data-carson-size="medium" /> </a..." Line: 260 Column: 4 - 153
"...east"> <img alt="Fine Feathered Feast" data-carson-src="/pbskids/shell/images/content/games/nature-cat-fine-feathered-feast.jpg" data-carson-size="medium" /> </a..." Line: 266 Column: 4 - 158
"...game"> <img alt="Dress that Rhino" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-dress-that-rhino_1.jpg" data-carson-size="medium" /> </a..." Line: 272 Column: 4 - 171
"...game"> <img alt="Ruff's Cookie Creator" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-ruffs-cookie-creator_2.jpg" data-carson-size="medium" /> </a..." Line: 278 Column: 4 - 148
"...game"> <img alt="Hamster Run" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-hamster-run_1.jpg" data-carson-size="medium" /> </a..." Line: 284 Column: 4 - 146
"...game"> <img alt="Fish Force" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-fish-force_2.jpg" data-carson-size="medium" /> </a..." Line: 290 Column: 4 - 155
"...mes/"> <img alt="Elmo's World Games" data-carson-src="/pbskids/shell/images/content/games/sesame-street-elmos-world-games.jpg" data-carson-size="medium" /> </a..." Line: 309 Column: 4 - 155
"...mes/"> <img alt="Elmo's World Games" data-carson-src="/pbskids/shell/images/content/games/sesame-street-elmos-world-games.jpg" data-carson-size="medium" /> </a..." Line: 315 Column: 4 - 146
"...game"> <img alt="Fish Force" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-fish-force_2.jpg" data-carson-size="medium" /> </a..." Line: 321 Column: 4 - 153
"...east"> <img alt="Fine Feathered Feast" data-carson-src="/pbskids/shell/images/content/games/nature-cat-fine-feathered-feast.jpg" data-carson-size="medium" /> </a..." Line: 327 Column: 4 - 141
"...html"> <img alt="Mission Earth" data-carson-src="/pbskids/shell/images/content/games/ready-jet-go-mission-earth.jpg" data-carson-size="medium" /> </a..." Line: 333 Column: 4 - 155
"...ing/"> <img alt="Spin and Sing" data-carson-src="/pbskids/shell/images/content/games/daniel-tigers-neighborhood-spin-and-sing.jpg" data-carson-size="medium" /> </a..." Line: 339 Column: 4 - 142
"...nter"> <img alt="Symmetry Painter" data-carson-src="/pbskids/shell/images/content/games/peg-cat-symmetry-painter.jpg" data-carson-size="medium" /> </a..." Line: 345 Column: 4 - 160
"...cue/"> <img alt="Fidgits to the Rescue!" data-carson-src="/pbskids/shell/images/content/games/design-squad-fidgits-to-the-rescue_2.jpg" data-carson-size="medium" /> </a..." Line: 351 Column: 4 - 137
"...end/"> <img alt="Being a Friend" data-carson-src="/pbskids/shell/images/content/games/arthur-being-a-friend.jpg" data-carson-size="medium" /> </a..." Line: 357 Column: 4 - 153
"...html"> <img alt="Corn Maze Craze" data-carson-src="/pbskids/shell/images/content/games/the-cat-in-the-hat-corn-maze-craze_2.jpg" data-carson-size="medium" /> </a..." Line: 376 Column: 4 - 138
"...ver/"> <img alt="Flower Flier" data-carson-src="/pbskids/shell/images/content/games/wild-kratts-flower-flier.jpg" data-carson-size="medium" /> </a..." Line: 382 Column: 4 - 149
"...html"> <img alt="Mountain Scramble" data-carson-src="/pbskids/shell/images/content/games/plum-landing-mountain-scramble.jpg" data-carson-size="medium" /> </a..." Line: 388 Column: 4 - 176
"...toff"> <img alt="Freddy's Carnival Count-off" data-carson-src="/pbskids/shell/images/content/games/fizzys-lunch-lab-freddys-carnival-count-off.jpg" data-carson-size="medium" /> </a..." Line: 394 Column: 4 - 172
"...ncy/"> <img alt="The Quest: Eco-Haven Emergency" data-carson-src="/pbskids/shell/images/content/games/cyberchase-the-quest-eco-haven-emergency.jpg" data-carson-size="medium" /> </a..." Line: 400 Column: 4 - 165
"...ood/"> <img alt="Don't Flood the Fidgits!" data-carson-src="/pbskids/shell/images/content/games/design-squad-dont-flood-the-fidgits.jpg" data-carson-size="medium" /> </a..." Line: 406 Column: 4 - 126
"...ado/"> <img alt="Pienado" data-carson-src="/pbskids/shell/images/content/games/odd-squad-pienado.jpg" data-carson-size="medium" /> </a..." Line: 412 Column: 4 - 143
"...html"> <img alt="Fossil Finder" data-carson-src="/pbskids/shell/images/content/games/dinosaur-train-fossil-finder.jpg" data-carson-size="medium" /> </a..." Line: 418 Column: 4 - 155
"...net/"> <img alt="Prankster Planet" data-carson-src="/pbskids/shell/images/content/games/the-electric-company-prankster-planet.jpg" data-carson-size="medium" /> </a..." Line: 424 Column: 4 - 127
"...wer/"> <img alt="Face Off" data-carson-src="/pbskids/shell/images/content/games/wordgirl-face-off.jpg" data-carson-size="medium" /> </a..." Line: 442 Column: 4 - 165
"...eats"> <img alt="Arthur's Tricks and Treats" data-carson-src="/pbskids/shell/images/content/games/arthur-arthurs-tricks-and-treats.jpg" data-carson-size="medium" /> </a..." Line: 448 Column: 4 - 154
"...east"> <img alt="Fine Feathered Feast" data-carson-src="/pbskids/shell/images/content/games/nature-cat-fine-feathered-feast.jpg" data-carson-size="medium" /> </a..." Line: 454 Column: 4 - 147
"...game"> <img alt="Fish Force" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-fish-force_2.jpg" data-carson-size="medium" /> </a..." Line: 460 Column: 4 - 159
"...game"> <img alt="Dress that Rhino" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-dress-that-rhino_1.jpg" data-carson-size="medium" /> </a..." Line: 466 Column: 4 - 172
"...game"> <img alt="Ruff's Cookie Creator" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-ruffs-cookie-creator_2.jpg" data-carson-size="medium" /> </a..." Line: 472 Column: 4 - 149
"...game"> <img alt="Hamster Run" data-carson-src="/pbskids/shell/images/content/games/the-ruff-ruffman-show-hamster-run_1.jpg" data-carson-size="medium" /> </a..."
Warnings
Consider avoiding viewport values that prevent users from resizing documents.
"...ws!"> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> <..."
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
"...nav> <section id="parents-message-bar"> ..." Line: 226 Column: 7 - 60
"...n> <section id="6-to-8" class="scroll-panel sub magenta"> ..."
The “banner” role is unnecessary for element “header”.
"... <header role="banner" data-audio-type="pbsKids" class="brand ui-audio"> ..."
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
"... <article id="the-wheel-canvas" class="open"> ..." Line: 524 Column: 11 - 71
"... <article id="mega-promo" class="content-col pancake-feature"> ..." Line: 533 Column: 7 - 37
"...iv> <article id="privacy" class=""> ..."
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pbskids.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.
pbskids.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.