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Editorial Team
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Asked: 2026-06-13T11:14:48+00:00

I am working with FontNames from PDF documents and wish to convert them to

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I am working with FontNames from PDF documents and wish to convert them to one of the 14 standard fonts if possible. An example is:

KAIKCD+Helvetica-Oblique

Are there standards for the punctuation and values of the pre/suf/fixes? I have found both -Oblique .I and -Italic as suffixes all – presumably – meaning Italic. Or are the names semantically void?

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1 Answer

  1. Editorial Team

    The prefix is as defined in the PDF specification:

    For a font subset, the PostScript name of the font — the value of the
    font’s BaseFont entry and the font descriptor’s FontName entry — shall
    begin with a tag followed by a plus sign (+). The tag shall consist of
    exactly six uppercase letters; the choice of letters is arbitrary, but
    different subsets in the same PDF file shall have different tags.

    Otherwise there merely are some common naming patterns; Jon Tan has tried to catalogue some here.

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