FreePDFLab

PDF Guide

How to Edit PDF Metadata Online

Updated June 17, 2026 · 4 min read

Update PDF title, author, subject, and keywords privately in your browser before sharing or archiving a document.

What is PDF metadata?

PDF metadata is document information stored separately from page content. Common fields include title, author, subject, and keywords. PDF readers and document-management tools use these fields to identify and organize files.

Editing metadata does not change the visible pages. It changes the document properties attached to the file.

When should you update PDF metadata?

Update metadata before sharing a document publicly, archiving a file, sending a client report, or replacing incorrect author information left behind by export tools.

  • Change an unclear title like Untitled or Document1.
  • Remove or replace an old author name.
  • Add keywords for document search and filing.
  • Set a subject that explains what the PDF contains.

Privacy notes for metadata editing

Metadata can reveal details that are easy to miss, especially author names or internal project labels. FreePDFLab edits metadata locally in your browser, so you can clean up document properties without uploading the file.