Add metadata to LibreOffice Writer document

Metadata in document files helpful to search and find the document in computer and World Wide Web. When the author export the document to PDF format, the metadata will also with the document. Here are the steps to add metadata to a LibreOffice Writer document.

Add author details

Visit Tools > Option > LibreOffice > User Data

Enter the details of the author.

Add metadata to PDF files

Master PDF Editor is a PDF editor application and can act as metadata editor. The user can add metadata to an existing PDF files (book, articles etc.) Metadata can give more document visibility while others searching in World Wide Web.

Installation of Master PDF Editor
Download the application
Download the DEB file from following link.
https://code-industry.net/free-pdf-editor/#get

Installation of DEB package
Apply the following command to install the package,

dpkg -i master-pdf-editor*

The application will open from Applications > Office > Master PDF Editor

Adding metadata to PDF file
Open the PDF file with Master PDF Editor

Editing mode of a PDF file.

Open File > Properties to add the metadata.

Save and close the document after adding the metadata.

Right click on the PDF file from file manager and select properties. Newly added metadata visible.

Add metadata to images using XnView

XnView is an image viewer and organiser tool. The tool has a strong module to handle image metadata. No other tools offer user-friendly metadata management interface. XnView is very helpful for add metadata (keywords, byline, location etc.) to images. Metadata can give more visibility for images while search engines dig for information. XnView is very useful for photographers and website content developers and search engine optimizers.

Installation

Download the deb file from XnView homepage and install using dpkg command.

sudo dpkg -i XnViewMP-linux-x64.deb

After installation, XnView will appear in Applications > Graphics