W3C Acessibilidade
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Este documento discute a importância da acessibilidade na web para todos os usuários, não apenas aqueles com deficiência. Ele descreve como a acessibilidade beneficia todos, incluindo pessoas com deficiência motora, auditiva, visual e cognitiva, além de usuários com dispositivos móveis ou pouca experiência com tecnologia. O documento também fornece diretrizes e ferramentas para validar a acessibilidade de sites web.
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W3C Acessibilidade
- 1. Metodologia para Avaliação de Acessibilidade em Sites 1ª Conferência Web W3C Brasil Lêda Lucia Spelta e Horácio Soares Novembro 2009
- 3. “ Acessibilidade na web é tornar todos os serviços, assuntos e publicações tão fáceis de serem utilizados por todas as pessoas, que até esqueceremos que há diferenças.” (Carla Nascimento – frase vencedora do concurso “Jornadas de Conhecimento - Acessibilidade na Web”)
- 4. Acessibilidade + Web Standards + Usabilidade Acessibilidade de Verdade! + +
- 5. Acessi bilidade para quem?
- 7. Mandy, sem visão e braços.
- 8. Lucas, com baixa visão utilizando o software ampliador de tela.
- 9. Para nosso ex. aluno Isaias, ele é designer e descobriu no início de 2009 que é daltônico. Isaias à esquerda, conduzindo o Januário para um chopinho após curso de acessibilidade Web.
- 10. Ok! Acessibilidade então é para pessoas com deficiência visual, certo?
- 12. João Henriques deficiente motor utiliza o mouse com dificuldade. ( www.euroacessibilidade.com )
- 13. Eric interagindo através de teclado expandido Funlar – Rio (nov/2006).
- 14. João, tetraplégico João (foto de Maíra Soares )
- 15. Deficientes auditivos não oralizados têm dificuldades com o português. Apreendem primeiro a língua de sinais. Chapeuzinho Vermelho em português e na língua de sinais (prof. Goulão)
- 16. Então acessibilidade é somente para pessoas com deficiências, certo?
- 17. Casal João e Ana, eles têm pouca experiência, baixa visão e dificuldades motoras.
- 18. Pedro e Laura com dispositivos móveis com acesso a Internet. Pedro olhando para seu smartphone e Laura com uma cara desesperada para seu celular.
- 19. Gabriel, linguagem em desenvolvimento... Gabriel compenetrado, olhando para o monitor e clicando com o mouse. Agora ele está olhando e brincando com o teclado.
- 20. Calvin, pouca experiência e medo do computador Homem com muito medo olhando por cima de um notebook.
- 21. Max, com tendinite, usando o mouse com a mão trocada. Homem com expressão de desespero, usando o mouse com a mão esquerda
- 22. E todos nós, primeira experiência. Um criança em frente a um notebook
- 23. E finalmente, o bilionário cego!!! Cifrão desenhado com moedas douradas
- 24. Google, o bilionário cego!!! É apenas um robô que só indexa conteúdo em texto. Dilbert fazendo parte do logotipo do Google e falando “eu não posso ver”.
- 25. Acessibilidade, quais são os custos?
- 27. E os benefícios? Gráfico de barras em crescimento da esquerda para direita.
- 28. Possibilidade de atingir 100% do público alvo; Homem com arma mirando um possível alvo
- 29. Atender melhor todas as pessoas
- 30. Mas normalmente o tratamento que recebemos é... Avião cheio com passageiro exprimido e impossibilitado fazer seu lanche.
- 31. Quando podemos ser surpreendidos Design universal: uma solução para todos Bebedor acessível para todas pessoas, altas, baixas, em cadeiras, etc.
- 32. Homem de terno comemorando Fidelizar clientes
- 33. Dardo Atender com qualidade novos clientes que surgem com a inclusão digital e o sistema de cotas.
- 34. Mais fácil de usar e aprender Casal decepcionado ao utilizar as orientações do fabricante e não conseguir montar uma estante.
- 35. Uma mão com laço no dedo indicador Conformidade com o decreto de lei 5296 (dez/04) e com a convenção da ONU que ganhou força de lei (ago/08) ;
- 36. Uma senhora acessando um computador. Crescimento do consumidor acima dos 65 anos...
- 37. Visualizar os benefícios da acessibilidade Manutenção mais rápida e barata, com melhor performance e diminuição dos custos com banda;
- 39. Proteção contra processos pela falta da acessibilidade; Mão com sinal de ok.
- 40. Maior visibilidade pelos sistemas de busca; Um grande e bonito olho azul.
- 41. Mulher com notebook em sinal de ok Diferencial competitivo Cachorrinho caregando um enorme osso.
- 44. Validação de Acessibilidade Globo em ambiente futurista.
- 45. Validação de Acessibilidade Validações automáticas e semi-automáticas de páginas web
- 46. Validação de Acessibilidade Web Standards
- 47. Validador W3C – HTML/XHTML http://validator.w3.org/
- 48. Validador W3C – CSS http://jigsaw.w3.org/css-validator/
- 52. HERA http://www.sidar.org/hera/index.php.pt
- 53. EXAMINATOR http://www.acesso.umic.pt/webax/examinator.php
- 55. Total Validator http://www.totalvalidator.com WCAG 2.0 e WCAG 1.0
- 56. Web Xact (Bobby) http://webxact.watchfire.com/ Validador de acessibilidade que foi comprado pela IBM e não está mais disponível na Web.
- 57. Truwex Online 2.0 http://checkwebsite.erigami.com/accessibility.html
- 58. Functional Accessibility Evaluator 1.0 http://fae.cita.uiuc.edu/
- 59. WAVE is a free web accessibility "evaluation tool p rovided by WebAIM . http://wave.webaim.org/
- 60. TAW WCAG 1.0, WCAG 2.0 (BETA) http://www.tawdis.net/
- 61. Functional Accessibility Evaluator 1.0 http://fae.cita.uiuc.edu/ Achecker (WCAG 2.0) http://achecker.ca/checker/index.php
- 62. Lista de validadores indicados pelo WAI: http://www.w3.org/WAI/ER/tools/complete
- 64. Color and accessibility http://www.merttol.com/articles/web/color-and-accessibility.html
- 65. Teste de contraste http://www.snook.ca/technical/colour_contrast/colour.html
- 66. Teste de contraste http://juicystudio.com/services/luminositycontrastratio.php
- 67. Teste de contraste http://www.stainlessvision.com/projects/colour-contrast-visualiser
- 68. Teste de contraste http://www.vischeck.com/vischeck/ (teste de imagens e sites)
- 69. Teste de contraste Firefox - a nalisador de Contraste de Cores
- 71. WebSiteOptimization - tempo http:// WebSiteOptimization.com / http://webwait.com
- 73. W3C - Link checker http://validator.w3.org/checklink
- 76. Validação de Acessibilidade Checklist W3C WCAG 1.0 (link)
- 77. Validação de Acessibilidade WCAG 2.0 Appendix B: Checklist (Non-Normative) Web Content Accessibility Guidelines 2.0 Checklist http://www.w3.org/TR/2006/WD-WCAG20-20060427/appendixB.html
- 83. Lynx Viewer http://www.yellowpipe.com/yis/tools/lynx/lynx_viewer.php
- 84. Lynx Viewer Testando o site da AcessoDigital.net
- 85. Diferentes Navegadores http://browsershots.org
- 86. Diferentes Navegadores http://browsershots.org
- 87. Diferentes Navegadores http://browsershots.org
- 94. Firefox Firefox 3.0.7 http://br.mozdev.org/firefox/download.html Complementos para o Firefox (são instalados a partir de seus respectivos links) : Firebug: https://addons.mozilla.org/pt-BR/firefox/addon/1843 HTML Validator https://addons.mozilla.org/pt-BR/firefox/addon/249 Web Developer https://addons.mozilla.org/pt-BR/firefox/addon/60 Check My Colors! 1.0 https://addons.mozilla.org/pt-BR/firefox/addon/8819 Firefox Accessibility Extension 1.4.5.0 https://addons.mozilla.org/pt-BR/firefox/addon/5809
- 95. Firefox Complementos para o Firefox (são instalados a partir de seus respectivos links) : TAW3 with a click 0.9.6 https://addons.mozilla.org/pt-BR/firefox/addon/1158 Juicy Studio Accessibility Toolbar 1.45 https://addons.mozilla.org/pt-BR/firefox/addon/9108 Obtrusive JavaScript Checker 0.81 https://addons.mozilla.org/en-US/firefox/addon/9505
- 96. Obrigado! Lêda Lucia Spelta [email_address] Horácio Soares [email_address] Uma mão segurando um cartão de visita da acesso digital.
Notas del editor
- É garantir que a informação esteja disponível e acessível a qualquer hora, local, ambiente, dispositivo de acesso e por qualquer tipo de visitante/usuário, independente de sua capacidade motora, visual, auditiva, mental, computacional, cultural ou social.
- É garantir que a informação esteja disponível e acessível a qualquer hora, local, ambiente, dispositivo de acesso e por qualquer tipo de visitante/usuário, independente de sua capacidade motora, visual, auditiva, mental, computacional, cultural ou social.
- É garantir que a informação esteja disponível e acessível a qualquer hora, local, ambiente, dispositivo de acesso e por qualquer tipo de visitante/usuário, independente de sua capacidade motora, visual, auditiva, mental, computacional, cultural ou social.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- AJAX creates a new paradigm for the web and many people are not accustomed to it yet. Thus it is important to inform the user if the page is being incrementally updated. Some users may not notice that data on the page is changed. This is especially true for users of assistive technology such as screen readers and magnifiers. Due to assistive technology, cognitive, or other reasons, some users may be focused on only a single area of the page. These uses may not be able to easily locate new information on the page. Unexpected changes of focus can be very distracting for some users. It can be very time consuming and difficult for some users to return to the previous location on the page. Thus, changing focus to the updated content should be avoided unless the user has explicitly requested that mechanism of update notification. Also, note that WCAG 2.0 Success Criterion 3.2.5 states, “ Changes of context are initiated only by user request.” Loss of back button functionality and URIs that can not be bookmarked are also issues associated with AJAX but they will not be discussed in this presentation since they do not directly affect accessibity.
- É garantir que a informação esteja disponível e acessível a qualquer hora, local, ambiente, dispositivo de acesso e por qualquer tipo de visitante/usuário, independente de sua capacidade motora, visual, auditiva, mental, computacional, cultural ou social.