Checking the accessibility and usability of a document in the low vision tab

An HTML document is opened to simulate how low vision people (individuals with weak eyesight, color vision deficiencies, cataracts, or combinations of these vision problems) see the webpage and to determine how easy or difficult the page is for them to read. The aDesigner also detects inaccessible parts of the webpage.

To check the accessibility and usability of a document for people with low vision:

1. Open the document in one of the following ways:
   • Click File > Open, and navigate to the URL or the local file to be checked.
   • Type the URL in the address line, and then click GO.
     The document opens in the Browser View pane.
2. Click Low Vision above the top right pane to select the low vision mode.
3. (Optional) Select the whole page check box for aDesigner to check the entire page (including multiple frames, if present) and not just the portion visible in the Browser.
4. Open the Set the parameters dialog box (Low Vision Simulation) in one of the following ways:
   • Click the Setting Button.
   • Click the Windows menu > Preferences > Low Vision Simulation.
   Set the parameters for the three low vision types, and then click either Apply or OK.
5. Start the simulation and detect accessibility and usability problems with the selected parameters in one of the following ways:
   • Select the Simulate Button.
   • Select the Window menu > Simulate (low vision) or use shortcut key (Ctrl+Shift+O).
6. (Optional) Click Save to save the report file as an HTML document. Note: The report file is an HTML document consisting of three parts: a simulated image, a problem list, and a problem map. Clicking on a line in the problem list highlights the corresponding element on the simulated image, and the page automatically scrolls as required to show the element. The highlighted element is also clickable. By clicking the element, you can jump back to the line of the problem in the problem list.
7. Address each entry in the problem list pane. See Line View pane (low vision) for details. As each problem is successfully resolved, the rating in the Overall Rating pane improves.

Related topics

• Exploring the HTML Accessibility mode
• Accessibility and usability problems for users with low vision
• Checking the accessibility and usability of a document in blind mode

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