PDF Metadata Editor

A PDF metadata editor that lets you read and rewrite the document properties buried inside any PDF — the title, author, subject, keywords, creator, producer and the creation and modification dates — then export an updated file. It is for anyone who needs a PDF’s properties to be correct: authors fixing a blank title, teams standardising the author and producer across exported reports, publishers adding searchable keywords, or privacy-conscious users who want to strip identifying information before sharing a document.

How it works

When you open a PDF, the tool reads its document-information dictionary using pdf-lib, a pure-JavaScript PDF library with no server component and no WebAssembly. Every field is shown in an editable form pre-filled with the current value, alongside a collapsible panel showing the original values exactly as they were read — so you always have a reference point and can revert with one click.

When you export, pdf-lib rewrites only the information dictionary and re-saves the same document. Pages, fonts, images and text are never touched, so the visible content is identical; only the properties change. Keywords are entered as a comma-separated list and stored as a proper keyword array. Dates round-trip through the browser’s native date picker, and a Stamp modification date to now toggle lets you mark the file as freshly edited. A Strip all metadata option clears every field at once for a clean privacy export.

Because everything happens in the browser, your file is never uploaded. The whole read-edit-export cycle stays on your device, which matters for contracts, internal reports and anything you would not paste into an online tool. You can also save reusable presets — for example a standard author, producer and keyword set — to apply the same metadata to many documents quickly.

Example

Suppose a report exported from a design tool has the title Untitled-1, the author field empty, and a producer string that leaks the internal tool name. Open it here, set the Title to Q2 Financial Report 2026, the Author to your company name, add keywords like finance, quarterly, 2026, and clear the producer string. Export, and the new PDF shows the correct title in every reader’s tab and properties panel while the pages remain pixel-identical.

Every change is calculated and applied in your browser — no file is uploaded or stored.