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Mofumi PDF

Edit Metadata

Change a PDF's title, author, subject, keywords, creator, producer and dates.

100% Private — files never leave your device
Upload PDFDrop files here or click to chooseAccepted: PDF Files never leave your device

About this tool

Edit Metadata lets you set the document properties stored inside a PDF: title, author, subject, keywords, creating application, producer and the creation and modification dates. The fields are pre-filled with the current values.

A good title is what browsers and PDF readers show in their window bar and what search engines display for published PDFs, so it's worth getting right. Keywords help desktop search and document management systems find files.

Thai text is fully supported. The outdated XMP copy of the metadata is removed so every reader shows your new values. Nothing is uploaded.

Engines: pdf-lib

How to use

  1. 1

    Upload a PDF — current values appear in the fields.

  2. 2

    Edit the fields you want to change.

  3. 3

    Click Save metadata and download the PDF.

Use cases

  • Publish on the web

    Give PDFs proper titles so search results and browser tabs show something meaningful.

  • Hide internal details

    Replace a personal author name with the company name before sharing.

  • Organise archives

    Add keywords and subjects so documents are easier to find later.

Frequently asked questions

What date format should I use?

Year-month-day and time, e.g. 2026-10-21 09:30. Leave modified empty to use the current time.

How do I separate keywords?

Use commas or semicolons.

Can I remove all metadata instead?

Yes, with Remove Metadata.

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