caelum.com.br Website Information
Daily Unique Visits: 1,390
Daily Page Views: 2,780
Income Per Day: $9
Estimated Value: $2,160
caelum.com.br is registered under .BR top-level domain. Please check other sites in .BR zone.
No name server records were found.
and is probably hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the full list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.
The highest website caelum.com.br position in Alexa rank database was 1331 and the lowest rank position was 903736. Current position of caelum.com.br in Alexa rank database is 515933.
Desktop speed score of caelum.com.br (82/100) is better than the results of 74.03% of other sites and shows that the page is performing great on desktop computers.
Mobile usability score of caelum.com.br (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.
Mobile speed score of caelum.com.br (62/100) is better than the results of 59.44% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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caelum.com.br 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.
caelum.com.br whois
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% 2024-09-12T02:35:44-03:00 - IP: 167.99.102.248
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% cert.br, http://www.cert.br/ , respectivelly to cert@cert.br
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% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.
caelum.com.br server information
Servers Location
caelum.com.br desktop page speed rank
Last tested: 2016-09-07
caelum.com.br Desktop Speed Test Quick Summary
priority - 8Reduce server response time
priority - 7Avoid 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://www.caelum.com.br/
https://www.caelum.com.br/
priority - 3Leverage 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://s3.amazonaws.com/downloads.mailchimp.com/js/goal.min.js (expiration not specified)
https://static.hotjar.com/c/hotjar-148883.js?sv=5 (60 seconds)
https://connect.facebook.net/pt_BR/all.js (20 minutes)
https://cursos.alura.com.br/images/alura/group-logo.svg (30 minutes)
https://embed.tawk.to/56bcf13bec64ebd5793ada9c/default (60 minutes)
https://stats.g.doubleclick.net/dc.js (2 hours)
priority - 2Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 12.6KiB (32% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yu/r/lwjuN_d2YG0.png could save 3.3KiB (24% reduction).
Compressing https://www.caelum.com.br/imagens/instrutores/fotos/adriano-almeida-120.jpg could save 2.9KiB (27% reduction).
Compressing https://www.caelum.com.br/imagens/instrutores/fotos/marco-bruno-120.jpg could save 2.7KiB (33% reduction).
priority - 1Enable 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 7.7KiB (57% reduction).
Compressing https://s3.amazonaws.com/downloads.mailchimp.com/js/goal.min.js could save 1.5KiB (58% reduction).
caelum.com.br Desktop Resource Breakdown
Total Resources | 82 |
Number of Hosts | 23 |
Static Resources | 62 |
JavaScript Resources | 26 |
CSS Resources | 5 |
caelum.com.br mobile page speed rank
Last tested: 2019-12-11
caelum.com.br Mobile Speed Test Quick Summary
priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
priority - 26Avoid 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://www.caelum.com.br/
https://www.caelum.com.br/
priority - 4Leverage 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://static.hotjar.com/c/hotjar-158595.js?sv=6 (60 seconds)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/214337…1577?v=2.9.14&r=stable (20 minutes)
https://www.googleadservices.com/pagead/conversion.js (60 minutes)
https://stats.g.doubleclick.net/dc.js (2 hours)
priority - 1Enable 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 12.5KiB (64% reduction).
Compressing https://www.caelum.com.br/imagens/redesign/ilustra…ursos/SVG/java-web.svg could save 4.2KiB (67% reduction).
Compressing https://www.caelum.com.br/imagens/redesign/ilustra…ker-e-docker-swarm.svg could save 3.7KiB (64% reduction).
caelum.com.br Mobile Resource Breakdown
Total Resources | 71 |
Number of Hosts | 15 |
Static Resources | 57 |
JavaScript Resources | 13 |
CSS Resources | 3 |
caelum.com.br mobile page usability
Last tested: 2019-12-11
caelum.com.br Mobile Usability Test Quick Summary
priority - 3Size 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 439 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:
<img src="/imagens/redes…icone-mais.svg" class="categoria-mostraMais">
falls outside the viewport.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.
<a href="https://api.wh…=5511970300195" class="unidades_whatsapp">(11) 97030-0195</a>
and 4 others are close to other tap targets.The tap target
<a href="/contato/?unidade=SP" class="unidade-linkContato">Entre em contato</a>
and 2 others are close to other tap targets.caelum.com.br HTML validation
Errors
No space between attributes.
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"....caelum.com.br"class="rodape-n..." Line: 18 Column: - 15986
"...k.com/caelumbr"class="rodape-n..." Line: 18 Column: - 16094
"...ter.com/caelum"class="rodape-n..." Line: 18 Column: - 16233
"...ewsletter-form"action="/newsle..." Line: 18 Column: - 16278
".../cadastraEmail"method="post"> ..." Line: 18 Column: - 16329
"...wsletter-label"for="newsletter..." Line: 18 Column: - 16451
"...wsletter-input"id="n..." Line: 18 Column: - 16472
"...wsletter-email"type="email"nam..." Line: 18 Column: - 16484
"...il"type="email"name="email"pla..." Line: 18 Column: - 16496
"...il"name="email"placeholder="ex..." Line: 18 Column: - 16527
"...mplo@email.com"required> <butt..." Line: 18 Column: - 16575
"...sletter-submit"type="submit">O..." Line: 18 Column: - 16791
"...n/icone-sp.svg"alt=""class="un..." Line: 18 Column: - 16797
"...e-sp.svg"alt=""class="unidade-..." Line: 18 Column: - 17455
"...Paulo_whatsapp"href="https://a..." Line: 18 Column: - 17574
"...to/?unidade=SP"class="unidade-..." Line: 18 Column: - 17700
"...n/icone-rj.svg"alt=""class="un..." Line: 18 Column: - 17706
"...e-rj.svg"alt=""class="unidade-..." Line: 18 Column: - 18042
"...to/?unidade=RJ"class="unidade-..." Line: 18 Column: - 18169
".../icone-bsb.svg"alt=""class="un..." Line: 18 Column: - 18175
"...-bsb.svg"alt=""class="unidade-..." Line: 18 Column: - 18444
"...to/?unidade=DF"class="unidade-..." Line: 18 Column: - 19507
"....com.br/caelum"target="_blank"..." Line: 18 Column: - 19738
"...rastart.com.br"target="_blank"..." Line: 18 Column: - 21681
"...f5e.package.js"async></script>..." Line: 18 Column: - 22107
"...51;cat=;ord=1?"width="1"height..." Line: 18 Column: - 22116
"...rd=1?"width="1"height="1"frame..." Line: 18 Column: - 22126
"...h="1"height="1"frameborder="0"..." Line: 18 Column: - 22141
"...frameborder="0"style="display:..." Line: 18 Column: - 22543
"...<img height="1"width="1"style=..." Line: 18 Column: - 22552
"...ht="1"width="1"style="border-s..." Line: 18 Column: - 22577
"...der-style:none"alt=""src="..." Line: 18 Column: - 22583
"...yle:none"alt=""src="..." Line: 18 Column: - 23447
"...e6c0-loader.js"type="text/java..." Line: 18 Column: - 23469
"...ext/javascript"async></script>..." Line: 18 Column: - 23952
"...<img height="1"width="1"style=..." Line: 18 Column: - 23961
"...ht="1"width="1"style="display:..." Line: 18 Column: - 23981
"...="display:none"src="https://ww..."
CSS: Parse Error.
"...sibility:hidden}.@cores-formac..." Line: 1 Column: - 607
"...sibility:hidden}.alura{visibil..."
Bad value “https://fonts.googleapis.com/css?family=Roboto+Condensed|Roboto:300,400,700” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
"... </style> <link href="https://fonts.googleapis.com/css?family=Roboto+Condensed|Roboto:300,400,700"rel="stylesheet"> <me..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
"...cript> <style>.desta..." Line: 18 Column: 22185 - 22191
"...oscript> <style>[name=..."
Bad value “search” for attribute “type” on element “input”.
"..."/busca"> <input type="search"class="destaqueBusca-campo"placeholder="Java, HTML, Android, UX..."role="search"name="q"required> <butt..."
Bad value “” for attribute “id” on element “header”: An ID must not be the empty string.
"...nologia"> <header class="categoria-header"id=""> <div ..." Line: 10 Column: 2978 - 3015
"...em-java"> <header class="categoria-header"id=""> <div ..." Line: 14 Column: 1539 - 1576
"...produto"> <header class="categoria-header"id=""> <div ..." Line: 16 Column: 1232 - 1269
"...-em-php"> <header class="categoria-header"id=""> <div ..." Line: 17 Column: 529 - 566
"...em-node"> <header class="categoria-header"id=""> <div ..." Line: 18 Column: 558 - 595
"...-python"> <header class="categoria-header"id=""> <div ..."
Duplicate ID “”.
"...em-java"> <header class="categoria-header"id=""> <div ..." Line: 14 Column: 1539 - 1576
"...produto"> <header class="categoria-header"id=""> <div ..." Line: 16 Column: 1232 - 1269
"...-em-php"> <header class="categoria-header"id=""> <div ..." Line: 17 Column: 529 - 566
"...em-node"> <header class="categoria-header"id=""> <div ..." Line: 18 Column: 558 - 595
"...-python"> <header class="categoria-header"id=""> <div ..."
Table columns in range 4…5 established by element “th” have no cells beginning in them.
"...linhaMes"> <th class="calendario-linhaMes-mes"colspan="5">Março<..."
HTML start tag “span” in a foreign namespace context.
"...g#caelum"><span class="column-item-title">Caelum..." Line: 18 Column: 19224 - 19255
"....svg#cdc"><span class="column-item-title">Casa d..." Line: 18 Column: 19605 - 19636
"...vg#alura"><span class="column-item-title">Alura<..." Line: 18 Column: 19842 - 19873
"...urastart"><span class="column-item-title">Alura ..." Line: 18 Column: 20065 - 20096
"...musicdot"><span class="column-item-title">MusicD..." Line: 18 Column: 20291 - 20322
"...ralingua"><span class="column-item-title">Alura ..." Line: 18 Column: 20647 - 20678
"...terstech"><span class="column-item-title">Hipste..." Line: 18 Column: 20876 - 20907
"...tersjobs"><span class="column-item-title">Hipste..." Line: 18 Column: 21097 - 21128
"....svg#guj"><span class="column-item-title">GUJ</s..." Line: 18 Column: 21445 - 21476
"...imasters"><span class="column-item-title">iMaste..."
Stray end tag “use”.
"...um</span> </use></svg>..." Line: 18 Column: 19278 - 19283
"...go</span> </use></svg>..." Line: 18 Column: 19650 - 19655
"...ra</span> </use></svg>..." Line: 18 Column: 19893 - 19898
"...rt</span> </use></svg>..." Line: 18 Column: 20113 - 20118
"...ot</span> </use></svg>..." Line: 18 Column: 20343 - 20348
"...ua</span> </use></svg>..." Line: 18 Column: 20706 - 20711
"...ch</span> </use></svg>..." Line: 18 Column: 20935 - 20940
"...bs</span> </use></svg>..." Line: 18 Column: 21140 - 21145
"...UJ</span> </use></svg>..." Line: 18 Column: 21493 - 21498
"...rs</span> </use></svg>..."
Stray end tag “svg”.
"...an> </use></svg> </a> ..." Line: 18 Column: 19284 - 19289
"...an> </use></svg> </a> ..." Line: 18 Column: 19656 - 19661
"...an> </use></svg> </a> ..." Line: 18 Column: 19899 - 19904
"...an> </use></svg> </a> ..." Line: 18 Column: 20119 - 20124
"...an> </use></svg> </a> ..." Line: 18 Column: 20349 - 20354
"...an> </use></svg> </a> ..." Line: 18 Column: 20712 - 20717
"...an> </use></svg> </a> ..." Line: 18 Column: 20941 - 20946
"...an> </use></svg> </a> ..." Line: 18 Column: 21146 - 21151
"...an> </use></svg> </a> ..." Line: 18 Column: 21499 - 21504
"...an> </use></svg> </a> ..."
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
"...noscript> <iframe src="//4026389.fls.doubleclick.net/activityi;src=4026389;type=conve651;cat=;ord=1?"width="1"height="1"frameborder="0"style="display:none"></ifra..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"...noscript> <img height="1"width="1"style="display:none"src="https://www.facebook.com/tr?id=2143375715701577&ev=PageView&noscript=1"> </noscr..."
Warnings
The “navigation” role is unnecessary for element “nav”.
"...an> </h1> <nav role="navigation"> <ul c..."
The “main” role is unnecessary for element “main”.
"...cript> <main role="main"id="conteudo"> <sec..."
The first occurrence of ID “” was here.
"...nologia"> <header class="categoria-header"id=""> <div ..." Line: 8 Column: 1069 - 1106
"...nologia"> <header class="categoria-header"id=""> <div ..." Line: 8 Column: 1069 - 1106
"...nologia"> <header class="categoria-header"id=""> <div ..." Line: 8 Column: 1069 - 1106
"...nologia"> <header class="categoria-header"id=""> <div ..." Line: 8 Column: 1069 - 1106
"...nologia"> <header class="categoria-header"id=""> <div ..."
A table row was 3 columns wide, which is less than the column count established by the first row (5).
"...Paulo</td> </tr> ..." Line: 18 Column: 3285 - 3291
"...Paulo</td> </tr> ..." Line: 18 Column: 3975 - 3981
"...sília</td> </tr> ..." Line: 18 Column: 4706 - 4712
"...sília</td> </tr> ..." Line: 18 Column: 5435 - 5441
"...sília</td> </tr> ..." Line: 18 Column: 6164 - 6170
"...sília</td> </tr> ..." Line: 18 Column: 6866 - 6872
"...neiro</td> </tr> ..." Line: 18 Column: 7571 - 7577
"...neiro</td> </tr> ..." Line: 18 Column: 8264 - 8270
"...Paulo</td> </tr> ..." Line: 18 Column: 8956 - 8962
"...Paulo</td> </tr> ..." Line: 18 Column: 9689 - 9695
"...Paulo</td> </tr> </tb..."
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
"...av-item"> <section class="form-newsletter"> <form..." Line: 18 Column: 12585 - 12620
"...eAncora"> <section class="rodape-nav-wrapper"> <div ..." Line: 18 Column: 16664 - 16699
".../section> <section class="unidades container"> <ul c..."
The “type” attribute is unnecessary for JavaScript resources.
"...</script> <script src="https://d335luupugsy2.cloudfront.net/js/loader-scripts/20bd5d95-759f-4313-ad3e-1663fd4de6c0-loader.js"type="text/javascript"async></scri..."
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
"...ntainer"> <h1 class="alura-titulo"> <img ..." Line: 18 Column: 11907 - 11952
"...ntainer"> <h1 class="contatoCallToAction-titulo titulo"> Fale ..."
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caelum.com.br 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.
caelum.com.br 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.