What is PDF Metadata Editor?

View and edit the metadata in any PDF — title, author, subject, keywords, creator, and producer. Upload your file, change the properties you need, and download the updated PDF.

The editor uses pdf-lib to load any standard PDF and exposes the eight Info dictionary fields PDF readers actually display: title, author, subject, keywords, creator, producer, creation date, and modification date. Edits are written back into the original PDF byte-for-byte — page content, fonts, and signatures stay intact, only the metadata block changes. You can also add your own custom key/value properties for anything the standard fields do not cover.

How to use

1. Upload a PDF file — the tool reads and displays all existing metadata fields (title, author, subject, keywords, dates).
2. Edit any metadata field directly: update the document title, add an author name, or set keywords so the file is easier to find.
3. Download the modified PDF with the updated metadata baked in — the document content remains untouched.

When to use

• Cleaning up 'Untitled' or 'Document1' titles before archiving final contracts and invoices.
• Adding searchable keywords to academic papers and reports so they surface in folder searches.
• Removing the previous owner's name from a PDF you've taken over for a project.

Result

You've received a contract PDF with 'Untitled Document' as the title and no author. Set the title to 'Service Agreement 2026', author to your company name, and add relevant keywords before archiving.

FAQ

What's the difference between Creator and Producer?

Creator is the application the document was authored in (Word, Pages, InDesign). Producer is the software that wrote the actual PDF bytes (Adobe Distiller, macOS Preview, Chrome's Save as PDF). Both fields are independent and editable.

Will editing metadata break the PDF or a digital signature?

Page content, embedded fonts, and form fields stay untouched. A digital signature, however, will become invalid because it covers the metadata too — sign the document after the metadata edit, not before.

Does the modification date update automatically?

You control it. The current values are pre-filled so you can leave them, set the modification date to now, or backdate either field. Some workflows prefer to keep the original timestamps to track when a document was first created.

Why are some metadata fields blank in my PDF?

Many PDF generators only set producer and creation date. Title and author are often left empty because the source application never asked for them. The editor lets you fill those gaps after the fact.

Can it remove embedded XMP metadata too?

The Info dictionary is rewritten on every save and the XMP stream is updated to match the new values. If you need to strip a custom XMP packet entirely (e.g. for privacy), set every field blank and the embedded data will reflect that.

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