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Rules / Output

Rule id
pdf-unresolved-citation
Check
Output
Severity
error

In a terminal: overfull explain pdf-unresolved-citation

Unresolved citation in the PDF

The PDF shows "[?]" where a citation number belongs.

Fix

‸Add the cited key to the .bib file or fix its spelling, then rebuild so biber/bibtex runs.

Other output rules

  • Undefined citation
  • Undefined reference
  • Bibliography not built
  • Bibliography out of date
  • LaTeX needs another run
  • Empty bibliography
  • Figure file not found
  • Label defined twice

Overfull

A free preflight kit for LaTeX papers and theses. It checks the build, the PDF, the references, accessibility and venue rules, whether you write by hand or with a coding agent.

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