Embodiments are provided for conversion of content to formats suitable for digital distributions. In some embodiments, a transformation of selected markup elements within a content item into semantic markup elements is performed, where the transformation provides receipt of a selection indicative of a mapping between a chosen markup element and a pattern element of a defined pattern, the defined pattern defining at least one of a semantic markup tag and a semantic attribute for each pattern element, and processing of the transformation by assigning to the chosen markup element at least one of a semantic markup tag and a semantic attribute defined for the pattern element mapped to the chosen markup element.