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Inserting accessible images

From: Dreamweaver CS3 Essential Training

Video: Inserting accessible images

I've copied the chapter 18 accessibility folder to my desktop, which contains all of the files I will be using for this chapter. So let's go ahead and define that as a site. In {italic}Dreamweaver{plain} we'll choose New Site. Call this teacloud 18. And we'll select that folder. And in here I'm just going to open up accessibility.html. And this is just a blank document that we will be using to insert objects onto so we can see how we can add accessibility. And let's start off by taking a look at how to make sure that images are accessible when we insert them into our pages. Now because I have images checked under my Accessibility preferences, it doesn't matter how I insert my images, if I come in here and find teacloud-azul and drag that onto my page, notice I instantly get this Image Tag Accessibility Attributes dialog box.

Inserting accessible images

I've copied the chapter 18 accessibility folder to my desktop, which contains all of the files I will be using for this chapter. So let's go ahead and define that as a site. In {italic}Dreamweaver{plain} we'll choose New Site. Call this teacloud 18. And we'll select that folder. And in here I'm just going to open up accessibility.html. And this is just a blank document that we will be using to insert objects onto so we can see how we can add accessibility. And let's start off by taking a look at how to make sure that images are accessible when we insert them into our pages. Now because I have images checked under my Accessibility preferences, it doesn't matter how I insert my images, if I come in here and find teacloud-azul and drag that onto my page, notice I instantly get this Image Tag Accessibility Attributes dialog box.

And this is where I can add Alternate text which again, as I've mentioned before, is just a brief description of what this image is. Basically, you want to describe this image in such a way so that someone who can't see it can at least get an idea of what this image is. I'm just going to type teacloud azul teapot. Now notice we have an option here for Long description. The Long description attribute allows you to provide a more verbose explanation of what the image is. So it lets you link to a text file that contains this longer description. This link is no different than any other link, except it won't appear to people who aren't using an audible screen reader.

If an image has a Long description attribute applied, and a screen reader or program encounters this image on a page, they will read it as a link, so a person with a visual impairment knows that this particular image contains a longer description. We actually have created one for this. So I'm going to browse for that inside accessibility > products. We have teacloud-azul.html. I'm going to choose that, and click OK. So you can see here's my image. And with that image selected, down here in the Alternate Alt area we see the teacloud azul teapot Alternate text that I've added here. And if I actually go to the Code, we'll see the Long description Attribute.

Somebody visiting my site with an audible reader will see that there is actually a longer description of this image, if my alternate text description doesn't do it for them. If I look inside my Files panel, inside products, here's the description. We can see it's a three-sentence description that says: "The Teacloud Azul teapot is a dark purple teapot with a stainless steal lid. The teapot is roughly five inches tall, and slightly oblong from top to bottom. The spout is molded directly to the body of the teapot." Here we actually get a nicer description than people who can actually see this document get. I might want to type this description on the actual page, but the point is, the combination of the Alt tag and the long description should give people who have trouble seeing this page, a good mental image of what this teapot actually looks like.

Adding the Alt text in the long description to all of the images on your page is one of the easiest and most significant ways you can make your web pages accessible to everyone. Because my preferences are set to prompt me to add these items every time I add an image, I can be sure that I'll remember to add those attributes every time I add an image. I'm going to save this page and leave it open for the next exercise.

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This video is part of

Image for Dreamweaver CS3 Essential Training
Dreamweaver CS3 Essential Training

129 video lessons · 87190 viewers

Garrick Chow
Author

 
Expand all | Collapse all
  1. 1m 12s
    1. Welcome
      1m 12s
  2. 21m 0s
    1. HTML vs. XHTML
      3m 4s
    2. What is CSS?
      3m 48s
    3. What is XML?
      2m 11s
    4. What is DHTML?
      1m 9s
    5. What is JavaScript?
      1m 23s
    6. File naming conventions
      3m 22s
    7. What is an index page?
      6m 3s
  3. 46m 18s
    1. Setting up your workspace
      2m 39s
    2. The Welcome screen
      4m 11s
    3. Windows and Mac differences
      3m 18s
    4. The Insert bar
      4m 38s
    5. The Property Inspector
      1m 50s
    6. The Document toolbar
      6m 6s
    7. The Document window
      9m 11s
    8. Panels and panel groups
      6m 58s
    9. Saving workspace layouts
      2m 22s
    10. Defining a default browser
      5m 5s
  4. 24m 59s
    1. Defining a site
      9m 5s
    2. File and folder management
      3m 11s
    3. Understanding path structure
      3m 17s
    4. Adding content to a site
      6m 6s
    5. Creating a site map
      3m 20s
  5. 38m 39s
    1. Creating a new blank site
      6m 0s
    2. Creating and saving a new document
      7m 54s
    3. About DOCTYPE
      3m 59s
    4. Inserting images
      9m 26s
    5. Inserting text
      3m 35s
    6. Aligning text and images
      4m 9s
    7. Inserting meta tags
      3m 36s
  6. 45m 58s
    1. Link basics
      6m 4s
    2. Linking with Point to File
      5m 18s
    3. External links
      4m 15s
    4. Creating email links
      5m 49s
    5. Named anchors
      7m 37s
    6. Linking to a file
      7m 35s
    7. Image maps
      9m 20s
  7. 1h 8m
    1. About CSS
      4m 52s
    2. Anatomy of a style sheet
      4m 10s
    3. CSS and page properties
      10m 11s
    4. Moving an internal style sheet to an external style sheet
      6m 46s
    5. The CSS Styles panel
      3m 48s
    6. CSS selectors
      2m 37s
    7. Type selectors
      12m 13s
    8. ID selectors
      10m 21s
    9. Class selectors
      5m 42s
    10. Creating rollovers with pseudo-class selectors
      7m 22s
  8. 42m 54s
    1. CSS vs. the Font tag
      2m 42s
    2. Formatting text with the Property Inspector
      8m 41s
    3. What measurement should I use?
      3m 15s
    4. Managing white space with margins, padding, and line height
      8m 34s
    5. Using font lists
      5m 45s
    6. Aligning text
      2m 47s
    7. Creating lists
      5m 8s
    8. Creating Flash text
      6m 2s
  9. 43m 19s
    1. About tables
      1m 28s
    2. Tables in Code view
      2m 36s
    3. Creating and adding content to tables
      7m 40s
    4. Changing table borders with XHTML
      5m 46s
    5. Coloring tables with XHTML and CSS
      6m 41s
    6. Aligning table content
      6m 39s
    7. Sorting tables
      3m 6s
    8. Setting table widths
      4m 48s
    9. Creating rounded-corner tables
      4m 35s
  10. 28m 22s
    1. Dreamweaver's layout tools
      3m 8s
    2. Tracing images
      4m 58s
    3. Adding AP div tags
      7m 29s
    4. Working with Layout Tables
      6m 55s
    5. Adjusting table widths and nesting tables
      5m 52s
  11. 16m 19s
    1. What is a device?
      3m 14s
    2. Attaching a printer-friendly style sheet
      3m 5s
    3. Styling for print
      7m 41s
    4. Adobe Device Central
      2m 19s
  12. 29m 54s
    1. Rollover rules
      3m 31s
    2. Creating simple rollovers
      5m 36s
    3. Creating disjointed rollovers
      7m 12s
    4. Creating navigation bars with multiple states
      9m 21s
    5. Creating Flash buttons
      4m 14s
  13. 26m 32s
    1. Viewing the code
      6m 9s
    2. Editing in Code view
      3m 0s
    3. The Code toolbar
      5m 11s
    4. Working with Code Collapse
      4m 27s
    5. The Quick Tag Editor
      2m 20s
    6. Working with snippets
      5m 25s
  14. 32m 45s
    1. About forms
      3m 23s
    2. Adding text fields
      9m 52s
    3. Adding checkboxes and radio buttons
      5m 37s
    4. Adding lists and menus
      6m 5s
    5. Submitting form results
      3m 23s
    6. Styling form elements with CSS
      4m 25s
  15. 23m 17s
    1. Opening a new browser window
      9m 38s
    2. Creating a popup message
      2m 50s
    3. Validating text fields
      2m 42s
    4. Getting more behaviors
      7m 2s
    5. Removing extensions
      1m 5s
  16. 14m 58s
    1. External image editor preferences
      3m 18s
    2. Built-in image editing tools
      3m 11s
    3. Roundtrip editing from Dreamweaver to Fireworks or Photoshop
      4m 39s
    4. Copying and pasting
      3m 50s
  17. 34m 16s
    1. Templates in action
      5m 12s
    2. Creating a new template
      6m 36s
    3. Applying templates
      3m 36s
    4. Modifying a template
      1m 40s
    5. Adding repeating regions
      3m 28s
    6. Working with repeating regions
      3m 13s
    7. Adding optional regions
      3m 34s
    8. Creating a library item
      3m 48s
    9. Modifying a library item
      3m 9s
  18. 13m 2s
    1. Using the History panel
      4m 24s
    2. Saving History steps as commands
      3m 25s
    3. Using Find and Replace
      5m 13s
  19. 14m 44s
    1. W3C accessibility guidelines
      4m 6s
    2. Accessibility preferences
      1m 29s
    3. Inserting accessible images
      3m 2s
    4. Inserting accessible tables
      2m 53s
    5. Inserting accessible form objects
      3m 14s
  20. 26m 17s
    1. About media objects
      2m 6s
    2. Linking to audio and video files
      5m 56s
    3. Embedding audio and video files
      7m 7s
    4. Setting parameters
      4m 27s
    5. Inserting Flash content
      2m 37s
    6. Inserting Flash video
      4m 4s
  21. 28m 47s
    1. Getting site reports
      3m 35s
    2. Checking links sitewide
      3m 30s
    3. Signing up with Tripod
      6m 36s
    4. Entering remote info
      4m 13s
    5. Publishing your site
      5m 41s
    6. Updating and publishing pages
      5m 12s
  22. 44s
    1. Goodbye
      44s

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