Edit PDF Metadata Online — Free

Every PDF carries a small block of document-level information — title, author, subject, keywords, creation and modification dates, and the producing software — stored in the file's Info dictionary, entirely separate from the page content streams. It never renders on a page; it surfaces in the browser tab title, a viewer's "Document Properties" panel, file manager previews, and search indexes. Editing it changes none of the visual document.

Three practical reasons to get it right. First, discoverability: document management systems (SharePoint, Google Drive, Confluence) and search engines index title and keywords, so a vague or default "Untitled" title makes a document genuinely harder to find later. Second, professionalism: a stray "Microsoft Word" or a previous employee's name in the author field is visible to anyone who checks properties on a document you're sending externally. Third, privacy: metadata can carry more than you intend — an internal project codename in the subject field, or a personal name in the author field of a document meant to be anonymous.

If a document will also be password-protected, clean the metadata first. PDF encryption secures page content, but standard metadata often remains in plain text alongside the encrypted body — so scrubbing author, title, and subject before locking the file closes a gap that encrypting first would leave open. This tool updates only the fields you fill in, leaving everything else untouched, so partial corrections (fixing just the author, say) are safe without risk of clearing other properties.