PDF Metadata Editor

Every PDF carries a little passport you can't see in normal reading: the document-information dictionary. It records what the creating application knew or guessed — the title (often "Untitled"), the author (often your operating-system login name), the software and version that generated it, and timestamps. It's how a polished client proposal ends up labeled "Microsoft Word - Document1" in the tab bar, or how a report quietly announces it was authored by a specific employee on a specific machine.

That matters in two opposite directions. Professionally, wrong metadata is just sloppy: when someone opens your PDF, the viewer tab shows the title field, not the filename. A proper title, author and subject make your documents look finished and searchable in document libraries. The other direction is privacy: before posting a PDF publicly — a resume, a sample contract, a scanned record — the author and creator fields are worth clearing. They routinely contain real names, company names and software fingerprints that nobody intended to publish.

This editor handles the fields that matter and nothing exotic: title, author, subject, keywords, creator and producer, plus read-only views of the creation and modification dates. It won't touch the page content, and because everything runs locally with pdf-lib, you can inspect sensitive documents without the irony of uploading them to a metadata-editing website.