Add the Author and Title

In addition to the actual content of your book, EPUB files also contain book details like Author and Title. These can be added with Sigil.

To add details (called metadata) about your book to your EPUB, click the Metadata Editor button or the menu item Tools→Metadata Editor:

The Metadata Editor window will be displayed:

The entries required by an EPUB are Title, Author, and Language. By default, the metadata editor contains the Language field and the Title field as shown above.

To change the language, double-click on the Value item in the Language row. A dropdown menu appears in that space that allows you to select your desired language.

Fill in the Title field by double-clicking on the Value item in the Title row. That opens the field for editing.

Type the full title of your book, for example enter Alice in Wonderland.

Add the Author to your book using the Add Metadata button. That button pops up a dialog that allows you to add a metadata item. Select Author from the list.

That adds the metadata item "Creator".

Enter the author's name, for example enter Lewis Carroll.

Specify that this Creator is the Author. Double-click on the Role value item. That presents a dropdown menu that allows you to select the Author entry.

Add the property File-As to the Creator item. This is actually optional. But it is usually included as it controls how the author’s name is sorted. Click the Add Property button. That button posts a dialog that allows you to select the property File-As.

Select the "File As" entry, then double-click the Value field and enter Carroll, Lewis.

This is how your data might look when filled in:

Once you have updated the information, you can click OK and then save your EPUB again.