RYUN Engineering & Research
Blog & Engineering Notes
Things we built, measured, or got wrong. Written by the developer, dated, and updated in place when code or benchmarks change.
Articles (1)
#LaTeX·8 min
Why LaTeX Resumes Fail ATS Parsers: The pdflatex Ligature and Virtual Font Pitfall
Default pdflatex builds convert character pairs like 'fi' and 'fl' into composite ligatures that legacy ATS extractors drop or turn into whitespace. Here is why 'efficient' becomes 'e cient' in recruiter databases, and how to fix your LaTeX preamble.
Oct 16, 2026Read