有一些在线检查器可以测试其中一些问题。 Chris Pederick 的 Firefox Web 开发人员扩展提供了针对 WAI 和 508 进行测试的轻松访问 - IE 开发人员工具栏也是如此。
I'm in agreement with @Jim that accessibility compliance is at the moment is not a 100% objective science.
Take the classic case of image alt text. Suppose a story about education in America includes a closeup photo of a smiling female Hispanic student, approximately ten years old, at a desk in a classroom writing on a piece of paper with a pencil. The WCAG1 guideline says to include a "text equivalent" for every image. Some would suggest that alt="young Hispanic girl at a desk in a classroom" would not provide enough meaning to convey equally what the photo shows. Others would argue that it conveys too much, that it's just a stock art filler and that alt="girl at desk" is appropriate. Others would argue that the photo represents a point made in the article and that alt="Education policies of the past 10 years have affected minority students most." is the most appropriate alt text.
So even experts in the field can disagree on what is best for this one simple situation. Automated tools can only detect whether alt text is missing -- not whether it provides a text equivalent. And we can all agree that placing alt="[image]" does not meet the intent nor the guideline of providing a text equivalent.
There are some online checkers that can test for some of these issues. Chris Pederick's Web Developer Extension for Firefox provides easy access to test against WAI and 508 -- as does the IE Developer Toolbar.
No automated tool can tell you whether a website is accessible. There are tools, such as Rational Policy Tester, that can identify potential problem areas, but they only work in conjunction with manual checking by a person with a good understanding of the requirements. A good place to start looking for your tools is at the WAI.
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我同意@Jim 的观点，即目前可访问性合规性并不是 100% 客观的科学。
以图像替代文本的经典案例为例。 假设一个关于美国教育的故事包含一张特写照片，照片中一位大约十岁的西班牙裔女学生微笑着，坐在教室的桌子上用铅笔在纸上写字。 WCAG1 指南规定为每个图像添加“等效文本”。 有些人会认为
alt="年轻的西班牙裔女孩坐在教室的桌子上"无法提供足够的含义来平等地传达照片所显示的内容。 其他人可能会认为它传达了太多信息，它只是一种库存艺术填充物，而alt="girl at desk"是合适的。 其他人可能会认为这张照片代表了文章中提出的观点，而alt="过去 10 年的教育政策对少数族裔学生的影响最大。"是最合适的替代文本。因此，即使是该领域的专家也可能对什么最适合这一简单情况存在分歧。 自动化工具只能检测替代文本是否丢失，而不能检测它是否提供等效文本。 我们都同意放置
alt="[image]"不符合提供等效文本的意图或准则。有一些在线检查器可以测试其中一些问题。 Chris Pederick 的 Firefox Web 开发人员扩展提供了针对 WAI 和 508 进行测试的轻松访问 - IE 开发人员工具栏也是如此。
I'm in agreement with @Jim that accessibility compliance is at the moment is not a 100% objective science.
Take the classic case of image alt text. Suppose a story about education in America includes a closeup photo of a smiling female Hispanic student, approximately ten years old, at a desk in a classroom writing on a piece of paper with a pencil. The WCAG1 guideline says to include a "text equivalent" for every image. Some would suggest that
alt="young Hispanic girl at a desk in a classroom"would not provide enough meaning to convey equally what the photo shows. Others would argue that it conveys too much, that it's just a stock art filler and thatalt="girl at desk"is appropriate. Others would argue that the photo represents a point made in the article and thatalt="Education policies of the past 10 years have affected minority students most."is the most appropriate alt text.So even experts in the field can disagree on what is best for this one simple situation. Automated tools can only detect whether alt text is missing -- not whether it provides a text equivalent. And we can all agree that placing
alt="[image]"does not meet the intent nor the guideline of providing a text equivalent.There are some online checkers that can test for some of these issues. Chris Pederick's Web Developer Extension for Firefox provides easy access to test against WAI and 508 -- as does the IE Developer Toolbar.
没有自动化工具可以告诉您网站是否可以访问。 有一些工具，例如 Rational Policy Tester，可以识别潜在的问题区域，但它们只能与充分了解需求的人员进行手动检查结合使用。 WAI 是开始寻找工具的好地方。
No automated tool can tell you whether a website is accessible. There are tools, such as Rational Policy Tester, that can identify potential problem areas, but they only work in conjunction with manual checking by a person with a good understanding of the requirements. A good place to start looking for your tools is at the WAI.