Tag
Typography
3 articles
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The soft hyphen (U+00AD): the invisible character that breaks PDF text extraction
It's invisible on screen. It prints correctly. But when text is extracted from the PDF - by an accessibility checker, a search engine, or a copy-paste - U+00AD surfaces as a garbage character between syllables. Here's what it is, where it comes from, and how to find it.
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Persona prompting: you’re an experienced typographer, check this before printing
The same PDF, two different prompts. 'Is this well laid out?' returned vague positivity. 'You're an experienced typographer, check this before printing' returned a structured technical review. The before/after register change is a clean, demonstrable lesson.
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PDF/X-4 from LuaLaTeX without Ghostscript: TrimBox, BleedBox, FOGRA39, and the pdfx package
Producing a PDF/X-4 press-ready file from LuaLaTeX without touching Ghostscript: the pdfx package, TrimBox/BleedBox geometry in points, FOGRA39 OutputIntent, CMYK-only color discipline, and XMP metadata - everything a print shop will verify.