Could it be “compacting” the fonts? So if U+0000 to U+0007F aren’t used at all, ... | Hacker News

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		colejohnson66 on Sept 22, 2020 \| parent \| context \| favorite \| on: Embedded PDF viewer in Firefox 81 supports filling... Could it be “compacting” the fonts? So if U+0000 to U+0007F aren’t used at all, remove those glyphs and set U+0000’s glyph to be what was U+0080? Yes, I know NULL doesn’t have a glyph, but I hope that gets the idea across.

belval on Sept 22, 2020 [–]

That would be my personal guess yes, as there are other ways to "protect" PDF text like curve-based rendering.

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