I've just been tidying a lot of my older entries in calibe/Sigil and have found quite a lot of the fonts in older epubs are set sized (#pt), how feasible would it be to have an option to Remap Fonts in css to 'em' values, with a preferred default base size (I usually use 1.2em - bad eyes), any 'body' or 'p' font at pt size would get remapped to this and any others as % of em's
So say a test epub has a body font set to 10pt, that would get remapped to default base size (1.2em) and any other font-size: #pt; would get remapped to appropriate values.
Going in and changing by hand takes a considerable amount of time - especially as old epubs were often badly coded (quite often having hundreds of font-size entries - especially if converted from an office doc).
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