This is a draft document supplied by the WCAG Techniques Task Force. It in no way represents a WCAG Working Group consensus or agreement and is provided for informational and discussion purposes only. The accessibility test listed below should not be construed as required for conformance with the proposed WCAG2.
img
elements is the empty string ("") if the image is decorative.Copyright 2005, ATRC, University Of Toronto, All Rights Reserved. W3C liability, trademark, document use and software licensing rules apply.
This test case was created by the ATRC at the University Of Toronto. It should not be construed as required for conformance with the proposed WCAG2.
The complete list of tests may be found at http://www.w3.org/WAI/GL/WCAG20/tests/
Comments on this test may be made to the WCAG mailing list.
As part of the conformance test process, this test has a status of 'accepted'.
Guideline: 1.1 - Provide text alternatives for all non-text content.
Success Criteria:
4. Non-text content that is not functional, is not used to convey information, and does not create a specific sensory experience is implemented such that it can be ignored by assistive technology. How to provide text alternatives that can be ignored by assistive technology . (Informative)
Level 1
The WCAG2 has 3 priority levels for making Web content accessible. This test has a priority of 'Level 1'.
The WCAG Working Group has created techniques that describe how Web content may be made accessible. The following techniques are related to this test:
The following tests must be run before running this test. If any of the prerequisite tests fail then this test is invalid and should not be run.
img
element and view its Alt text.img
elements is the empty string ("") if the image is decorative.The following tests are related to this test and may be performed next. There is no requirement that these tests be performed:
These test files contain examples of the accessibility problem detectable by this test. They may also contain more accessibility problems than the one described in this test. Please ignore any extraneous accessibility problems in these files.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>OAC Testfile - Check #16 - Positive</title>
</head>
<body>
<p>My poem requires a big space<img src="10pttab.gif" alt="big space" width="5" height="5"/>here.</p>
</body>
</html>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>OAC Testfile - Check #16 - Negative</title>
</head>
<body>
<p>My poem requires a big space<img src="10pttab.gif" alt="" width="5" height="5"/>here.</p>
</body>
</html>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>OAC Testfile - Check #16 - Positive</title>
</head>
<body>
<p><a><img src="star.gif" alt="red star"/>dogs</a></p>
</body>
</html>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>OAC Testfile - Check #16 - Negative</title>
</head>
<body>
<p><a><img src="star.gif" alt=""/>dogs</a></p>
</body>
</html>