PDF Metadata Editor
Edit a PDF's title, author, subject and keywords without changing its content. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
About this tool
This tool edits the document metadata embedded in a PDF, including title, author, subject and keywords, without touching the visible content of any page. Replace a generic filename-derived title like 'scan0042' with a proper document title, set your name as author before submitting a manuscript, or add keywords so a research paper is easier to find in a searchable archive. The metadata fields are read and rewritten locally using pdf-lib, so a confidential thesis or client report never has to be uploaded just to correct who it's attributed to. This is especially useful before publishing a PDF publicly, submitting to a journal, or archiving scanned documents where the original metadata was empty or misleading, since clean metadata improves searchability and looks more professional when the file properties are inspected.
How to use this tool
1. Choose your PDF
Select or drag in the PDF file whose metadata you want to edit.
2. Edit the fields
Update the title, author, subject and keywords as needed.
3. Apply the changes
Confirm the new metadata to rewrite the document properties.
4. Download the result
Save the PDF with its updated metadata to your device.
Why use this tool
Metadata is invisible while reading a PDF but visible the moment someone checks file properties, shares it online, or archives it in a document management system. Correcting title, author, subject and keywords takes seconds with this tool and makes files easier to find, properly attributed and more professional, all without touching a single visible page.
Tips & best practices
- Use a descriptive title instead of a raw filename so the document is identifiable in file browsers and search results.
- Add relevant keywords to research papers and reports to improve discoverability in document search systems.
- Clear the author field before sharing a PDF publicly if you'd rather not disclose who created it.
Common use cases
- Replacing a scanner-generated filename title with a proper document name.
- Setting correct author and subject fields before submitting a manuscript to a journal.
- Adding keywords to a research paper for easier discovery in an archive.
- Cleaning metadata on a client report before sending it externally.
- Standardizing title and author fields across a batch of company documents.
Frequently asked questions
What metadata fields can I edit?
You can edit the title, author, subject and keywords, which are the standard fields most PDF readers display in document properties.
Will editing metadata change my PDF's content?
No, only the invisible metadata fields are updated; every page, image and piece of text stays exactly as it was.
Why does my PDF show a strange auto-generated title?
Many tools that create PDFs, like scanners or export functions, leave the title blank or set it to the filename, which this tool lets you replace.
Does clean metadata affect search engine visibility?
Yes, when a PDF is indexed online, its title and keywords can influence how it's described in search results.
Can I remove metadata entirely instead of editing it?
Yes, you can clear any field, leaving it empty if you'd rather not expose an author name or subject.
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