Inspect and edit the hidden properties of any PDF
Every PDF carries a set of metadata fields — title, author, subject, keywords, and more — that describe the document to search engines, libraries, and reader applications. The PDF Metadata Viewer surfaces all of that information in a clean, editable form so you can read what a file says about itself and change it to whatever you need. It is the quickest way to tidy up document properties before you publish or share a PDF.
Beyond the editable fields, the tool also displays read-only details such as the creator application, the producer software, and the creation and modification timestamps. Seeing these values helps you understand where a document came from and whether its stated metadata matches its content. When you edit the title, author, subject, or keywords and save, the tool writes a fresh copy with your updated information while leaving every page untouched.
This is also a fast way to protect your privacy. Documents often retain the original author's name, software details, or internal keywords long after they should. With one pass you can clear those fields entirely before distributing a file. All of this runs locally through pdf-lib in your browser, so the document and its properties never leave your device — ideal for reviewing and sanitizing sensitive files.