Top Ten Websites Accessibility Issues to Fix

1. Missing or uninformative page title
2. Heading issues, including:
   1. No heading structure
   2. Missing first level heading
   3. Skipped heading level
   4. Empty heading
   5. Possible Heading
3. Inappropriate alternative text, including:
   1. Missing alternative text
   2. Linked image missing alternative text
   3. Spacer image missing alternative text
   4. Image button missing alternative text
   5. Image map area missing alternative text
   6. Image map missing alternative text
   7. Suspicious alternative text
   8. Linked image missing alternative text
4. Links/Buttons with inappropriate accessible text, including:
   1. Suspicious Link text
   2. Empty Link
   3. Empty Button
5. Mislabeled form fields, including:
   1. Missing form label
   2. Empty form label
   3. Multiple form labels
6. Very Low Contrast
7. Verify media captions and transcripts, including:
   1. Audio/Video
   2. HTML5 video or audio
8. Broken accessibility features, including:
   1. Broken skip link
   2. Broken ARIA reference
   3. Broken ARIA menu
9. Language missing or invalid
10. No page regions

The following accessibility features should be found on most pages. If one of the following features is missing, it may indicate an accessibility issue:

1. Heading level 1
2. Skip Link
3. Main content
4. Navigation