| name | write-metadata |
| description | Set or replace PDF metadata — title, author, subject, keywords. Useful for cataloguing scanned documents or standardizing batch outputs. Triggers on phrases like "set the title of this PDF", "write metadata", "tag this PDF with author/keywords". |
Write PDF Metadata
Set the standard PDF metadata fields.
Inputs
- Input PDF path (required).
- Title (optional).
- Author (optional).
- Subject (optional).
- Keywords (optional) — comma-separated.
- Output path (optional) — defaults to overwriting
<input> (after backup) or <input>-tagged.pdf. Confirm with user.
Tooling
exiftool writes both the Info dictionary and XMP cleanly.
Recipe
exiftool \
-Title="Quarterly Report" \
-Author="Daniel Rosehill" \
-Subject="Internal review" \
-Keywords="quarterly,2026,review" \
-overwrite_original_in_place=false \
-o output.pdf input.pdf
Verification
exiftool output.pdf | grep -E "Title|Author|Subject|Keywords"
Workflow
- Confirm fields with user — if any are missing, ask before assuming defaults.
- Run exiftool.
- Verify and report.
Output
PDF with new metadata. Original preserved (unless user explicitly asked to overwrite).
