Free Online PDF Metadata Editor
The document is opened and edited in this tab. It stays local — a contract or a scan is never uploaded to be processed.
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How it works
The /Info dictionary, and what it gives away
ISO 32000 defines a document information dictionary referenced from the file trailer, holding Title, Author, Subject, Keywords, Creator, Producer, CreationDate and ModDate — dates in the form D:20260816143000+01'00'. Creator names the application the document was authored in and Producer names the one that wrote the PDF, so a file will happily announce that it came out of a specific version of a specific program, on a specific machine, at a specific time. Author is worse: it is usually filled in from the operating system account, which means a CV, a tender or an anonymous submission frequently carries someone's full real name without anyone having typed it. Newer files may also carry an XMP packet, an XML metadata stream in the catalog that duplicates some of the same fields.
- Title and Subject
- Free text. Title is what a viewer shows in its window and tab, which is why an untitled export often displays a temp filename.
- Author
- Usually inherited from the OS user account rather than typed. The single most common way a PDF discloses a real name by accident.
- Creator and Producer
- The authoring application and the PDF writer. Together they fingerprint the software and version used to make the file.
- CreationDate and ModDate
- PDF date strings with a UTC offset, so they leak a timezone as well as a timestamp — enough to contradict a claimed working pattern.
- XMP metadata
- An XML packet some producers embed alongside /Info. It can hold its own copy of the same values and is a separate structure from the dictionary.
How to use it
How to edit PDF metadata online
- 01
Open the PDF
The /Info dictionary is parsed in the tab and shown field by field, exactly as stored.
- 02
Edit or clear the fields
Correct a title, replace an author, or empty every identifying field at once.
- 03
Save the cleaned file
pdf-lib writes a new document with your values. The pages themselves are copied through unchanged.
Where it earns its keep
Where PDF metadata is the thing that matters
- Removing your real name from a CV or a tender before it goes to a stranger.
- Clearing the author field from a document that has to be reviewed anonymously.
- Fixing a title so the file shows something sensible in a viewer's window bar.
- Checking what a PDF you received says about who made it and with what.
Questions
PDF Metadata, answered
Does clearing the metadata make the document anonymous?
No. It removes the /Info fields, which is the most common leak, but the document body can still identify you — a name in the text, an annotation with an author, an embedded font subset from a licensed copy, or details in an embedded image. Treat it as one step, not the whole job.
Does it also clear an XMP packet?
Not reliably. XMP is a separate XML stream that some producers write in addition to /Info, and a viewer may show values from either. Check the file in a reader after cleaning if the metadata is genuinely sensitive.
Can I edit metadata on an encrypted PDF?
Not without the password. The document's strings are encrypted, so its metadata cannot be read or rewritten. The file is detected and reported instead of quietly producing something wrong.
Is my file uploaded to be inspected?
No. It is parsed and rewritten in this browser tab. A tool that asked you to upload a document to find out what it discloses about you would be an odd thing to trust.