Exporting accessible PDF – wrong BoundingBox
An accessible PDF needs for all graphics and pictures a boundingbox.
This is used by AT e.g. to set a focus to a visual impaired user.
Using the PDF export a boundingbox is defined for all linked images.
Often the boundingbox does not fit to the visible area.
AT user get wrong information, in fact the file is not accessible.
Only a part of the linked asset is visibily placed in InDesign, the rest is cropped.
The boundingbox is bigger then the visible area.
You can fix this in Acrobat theoretically, but this is nor real workaround as you only edit values and dont have visual feedback.
InDesign sample files and accessible PDF with boundingbox example + visible error.