PDF Metadata Editor

How do I edit PDF metadata?

Press Choose a PDF. The form fills with the title, author, subject, keywords, Creator, Producer and the two dates the file has now. Change what you want, clear a field to remove it, and leave Update the hidden XMP copy too ticked. Press Save details, check the before and after table, then Download.

1. Press Choose a PDF.
2. Change any field, or press Now to set a date to the current time.
3. Keep Update the hidden XMP copy too ticked.
4. Press Save details, check the table, then Download.

What is PDF metadata?

It is information a PDF carries about itself. The PDF standard, ISO 32000, defines a document information dictionary with fields for the title, author, subject, keywords, creator, producer, creation date and modification date. A file can also hold an XMP packet, an XML block with the same details and sometimes more, such as rights or a PDF/A claim.

Why does my PDF still show the old title after editing?

Usually because the file holds two copies of the details. A tool that changes only the document information dictionary leaves the XMP copy as it was, and a reader that prefers XMP keeps showing the old title. This editor writes both. The table shows the same test file edited both ways.

How do I change the author of a PDF?

Open the PDF here and type the new name in Author. For several authors, separate the names with a semicolon: the document details keep the text as typed, and the XMP copy lists each name on its own. Press Save details. The author shown under Properties in a PDF reader then changes.

How are PDF dates stored?

As text in a fixed pattern. The document details write D, a colon, the year, month, day, hours, minutes and seconds, then the offset from UTC. The XMP copy uses the ISO 8601 form. The editor reads and writes both, keeps the file's time zone, and uses your device's zone for a new date.

What do Creator and Producer mean in a PDF?

Creator names the app the document was first written in, such as Microsoft Word. Producer names the software that turned it into a PDF, such as a print driver or a PDF library. Both are free text, so you can correct them or clear them. Some apps write their own Producer again when they save the file later.

Should I edit or remove PDF metadata?

Edit it when the details should say something: a clear title helps search engines and screen readers, and a correct author credits the right person. Remove it when the file should say nothing about where it came from. The Remove PDF Metadata tool also clears attachments, comment authors and camera data in photos.

To wipe everything instead of editing it, use Remove PDF Metadata, which also shows details this form does not cover.