Does this make the file anonymous?

No. It clears document properties, not content. Anything visible on the page is still there.

A second metadata store kept alongside the basic properties. Tools that only clear the basic fields leave it behind.

Are dates removed too?

Yes by default, though you can keep them.

protect

Remove PDF Metadata

Strip author, title and producer details out of a PDF.

Runs in your browser

How it works

PDFs often carry the name of whoever created them, the software used and the original file path. This clears the document information dictionary and also removes the XMP packet, which many tools overlook. It cannot remove information printed into the page itself, such as a name on a letterhead.

Related tools

Edit PDF Metadata

/edit-pdf-metadata

Watermark PDF

/watermark-pdf

Bates Numbering

/bates-number-pdf

Questions

Does this make the file anonymous?: No. It clears document properties, not content. Anything visible on the page is still there.
What is XMP?: A second metadata store kept alongside the basic properties. Tools that only clear the basic fields leave it behind.
Are dates removed too?: Yes by default, though you can keep them.