It looks like the fonts generated by FontSelf for Illustrator are Postscript Type1 – is this correct? I see that Adobe will dropping support of Type1 fonts (not until 2023, but still…).
FontSelf is creating OTF Fonts, a widely common modern standard.
Were did you see Postscript? Just create a font and look at the suffix.
I understand that the file type is shown as .otf, but in FontBook it shows the ‘Kind’ as Postscript Type1, which is the reason for my question.
This behaviour in FontBook is quite geeky (and surprising TBH) but confirming that all fonts generated by Fontself are OpenType font files, actually encoded in CFF (Compact Font Format Table) — which is different from the legacy PostScript Type 1 format.
Apparently, macOS will categorize any font that lacks specific features (like alternates or ligatures in the Glyph Substitution Table or color SVG glyphs) as a PostScript Type 1 font — even though they actually include data encoded in CFF (!?).
So if you add any of these features to the font, you will notice that macOS will then change how it detects the font, and display it as OpenType Postscript:
Thanks for that clear explanation, Franz. I was worried that what I had created would not be supported in a few years. Now I can rest easy.