PDF to BibTeX
Produce a BibTeX entry describing a PDF paper (its own title, authors, year, ...) using jabkit, JabRef's command-line toolkit.
This skill is about metadata of the PDF. Extracting the entries a paper cites (its "References" section) is a different task, not covered by this skill.
Setup
jabkit runs via JBang — no JDK setup needed. Install JBang if missing:
curl -Ls https://sh.jbang.dev | bash -s - app setup # Linux/macOS
iex "& { $(iwr -useb https://ps.jbang.dev) } app setup" # Windows
Then install jabkit on the PATH (the same command also updates it):
jbang app install --fresh --force jabkit@jabref
One-off run without installation:
jbang --fresh jabkit@jabref --help
Basic usage
jabkit convert --input paper.pdf --input-format pdfMerged --output paper.bib
Omit --output to print BibTeX to stdout. Add --porcelain before the subcommand for script-friendly output:
jabkit -p convert --input paper.pdf --input-format pdfMerged
PDF importer formats
Pass one of these as --input-format:
| Format id | Strategy |
|---|---|
pdfMerged |
Merges results of the other importers into one best-effort entry — use this by default |
pdfXmp |
Reads XMP metadata stored in the PDF |
pdfEmbeddedBibFile |
Reads a BibTeX file embedded as PDF attachment |
pdfVerbatimBibtex |
Parses BibTeX printed verbatim on the first page |
pdfContent |
Heuristic extraction from the text of the first page |
pdfGrobid |
Sends the PDF to a GROBID service (requires GROBID to be enabled/reachable) |
--input-format "*" auto-detects the format (also works for non-PDF inputs).
Recommended workflow
Run with
pdfMergedfirst. Besides merging the other importers' results, it looks up any DOI, arXiv eprint, or ISBN found in the PDF online and merges the fetched metadata into the entry — no separate DOI lookup is needed.Validate the resulting library:
jabkit check paper.bib
Batch conversion
for f in papers/*.pdf; do
jabkit -p convert --input "$f" --input-format pdfMerged >> library.bib
done
Afterwards generate citation keys for all entries:
jabkit citationkeys generate library.bib --output library.bib
Related
- Extract the works a paper cites (its "References" section): the
pdf-extract-referencesskill. - Write metadata back into PDFs (reverse direction):
jabkit pdf update --citation-key <key> --input library.bib --input-format bibtex - Full CLI reference: the
jabkitskill in this repository.