Semantic elements and attributes improve communication. For details please consult the semantics document.
The semantics of an
not provide a clear, direct, explicit, and strong semantic for an
image long description. An
iframe provides a generic
iframe technique would force a visual encumbrance on sighted
users unless additional code (in the form of CSS or
hidden) were added. Please refer to Cascading Style Sheets and
hidden for details of why using these
techniques are a bad idea.
iframeusing CSS or
Allowing for discoverability serves other use cases.
iframe to supply long descriptions would
introduce needless complexity. Complexity confuses and leads to
longdesc is a simple link.
Attempting to use
iframe to provide a long
description reinvents the wheel by duplicating a basic method that
has already previously been created.
No use cases of
iframe for a long
description has been presented that are not already
No tutorials, books, or documentation exists that explain to
authors how to make an accessible long text alternative with
No examples in the wild of accessible long text alternatives
iframe have been presented for any of the use
cases. No evidence exists that authors have or will use it for
accessible long text alternatives.
iframe technique lacks backwards compatibility. For further
rationale please consult the backwards compatibility document.
Any proposed solution should be easy for authors who are already
publishing content with
longdesc to retrofit their
would be difficult, labor intensive, and error prone.
No retrofitting is required for
No evidence has been presented that
more accessible content for long descriptions than
longdesc or that more authors would use it