Ensure the reading order of a PDF makes sense when reflowed
Make sure the reading order of a PDF document remains logical when in reflow mode
Whenever the default presentation or layout of a PDF document makes reading more difficult than it should be, forces magnification that creates a readability hindering horizontal scrollbar or creates barriers that prevent users from fully taking advantage of the content, users can rely on the PDF reflow feature to temporarily present the content of the document as a single flowing column. This reflow view makes the document easier to read on mobile devices or when magnified on a standard monitor, and does so without forcing users to scroll horizontally to read the text. While this feature undoubtedly allows for more efficient reading for low vision users, authors need to pay extra attention to the resulting reading order, to make sure it makes sense.
To do so, simply structure the content correctly in the authoring tool used to create the document, and thoroughly validate how it is rendered when in reflow mode, before proceeding to create the final tagged PDF. Just like for HTML content, the complexity of the layout will directly impact how reliably the content of [...]