PDF Metadata Editor

View and edit a PDF's title, author, subject, keywords, creator, producer and dates in your browser, or strip all metadata for privacy before sharing.

About this tool

Every PDF carries a small block of hidden facts: its title, author, subject, keywords, the app that created it, the app that produced the file, and the dates it was created and last modified. This tool shows those fields for your PDF, lets you edit any of them, and can wipe them all before you share the file. It works on the document-information dictionary with pdf-lib, entirely in your browser, and it leaves the pages themselves untouched.

How to use it

  1. Upload a PDF. The fields it already has are filled in: title, author, subject, keywords, creator, producer, created and modified.
  2. Edit any field, or leave a field empty to remove it from the file. The Now button next to a date fills in the current time.
  3. To strip everything instead, tick Remove all metadata (privacy). Every document-information field is deleted, custom ones included, and the form fields are ignored.
  4. Click Save Metadata (or Remove All Metadata), check the summary, then press Download. Your original file is never changed.

FAQ

What is PDF metadata and where is it stored?

Most PDFs keep their metadata in a document-information dictionary: Title, Author, Subject, Keywords, Creator, Producer, CreationDate and ModDate. Many files also embed an XMP packet, a second copy of similar facts written as XML. This tool edits the document-information dictionary and removes the XMP packet on save, because pdf-lib does not rewrite XMP and a stale packet could contradict your edits.

Why would I want to remove metadata before sharing a PDF?

The fields often reveal more than you intend: the author is frequently the username of whoever exported the file from Word or another app, the creator and producer name the software and sometimes its version, and the dates show when the document was made and edited. Clearing them before you send a CV, a contract or a report keeps that background out of the file.

Does Remove all metadata make the PDF fully anonymous?

No. It removes the document-information fields and the XMP packet only. It does not touch the page content, so a name printed in the text, hidden text, comments and other annotations, embedded files, bookmarks, form field values or metadata inside embedded images are all still there. Treat it as one step of cleaning a file, not a guarantee.

What is the difference between Creator and Producer?

Creator is meant to name the application that made the original content, for example Microsoft Word. Producer names the application that converted or wrote it out as a PDF, for example a print driver or a PDF library. They are often different, and either can be edited or cleared here.

Does editing the metadata change the dates automatically?

No. The tool opens your file without letting pdf-lib stamp its own producer or the current time, so the Modified date only changes if you change it. If you want it to show the time of your edit, press Now next to Modified.

Does it change how the PDF looks or reduce its quality?

No. The pages, text and images are left as they are and the file is saved again with its metadata changed. The file size can still shift slightly because the file is rewritten. A digital signature on the PDF will no longer validate after any edit, so do not use this on a document that has to stay signed.

My PDF is password-protected. Can I edit its metadata?

Not directly. An encrypted PDF cannot be read without its password, so the tool asks you to remove the protection with Unlock PDF first. If you want to protect the edited file again afterwards, use Protect PDF.

Is my PDF uploaded to a server?

No. The file is read and rewritten by pdf-lib in your browser tab and nothing is transmitted, which matters when the whole point is to keep identifying details private.

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