Page Title: RO Water Purifier, reverse osmosis water purifier, best water purifier for home, RO water filter manufacturer in China
November 15, 2021 23:43

Image button must have alt. content


Severity Action
no actions


Rule ID Control 2
Definition Every input type image element must have an alt or title attribute with content.
  • Alternate content associated with an image-based form control ensures that information about the control is spoken by screen readers when it receives focus.
WCAG Success Criteria

3.3.2 Labels or Instructions (Level A, Primary Success Criterion)

Rule Category Forms
Scope Element
Target Resources input[type="image"] elements
  • The alt attribute is the preferred and most commonly used way to provide an accessible label for input type image elements.
  • In special cases, the title attribute can be used on the input type image element to provide an explicit text description of its purpose.
  • In special cases, the aria-labelledby attribute can be used on the form control element to reference the id(s) of the elements on the page that describe its purpose.
  • In special cases, the aria-label attribute can be used on the form control element to provide an explicit text description of its purpose.
Informational Links

Element Results

Element Identifier Result Element Position Message

Column Definitions

Element Identifier
Information about the element associated with the result.
The information typically includes the tag name, accessible name or other information related to the rule requirements.
"Page" means that the result applied to the page. For example, the rule "One main landmark on the page" is a page level rule.
Element Position
The element position is based on the DOM order of elements in the page.
The element position maybe useful in helping to locate a specific element on the page evaluated (e.g smaller numbers are typically toward the beginning of a page and larger numbers typically toward the end of a page).
Element position 1 is the first element.
The highest element position is the last element.
Element position values for most rule/page results will not be consecutive since a rule only applies to a sub set of elements found on a page.