Nitro PDF Professional 4.9
Product Manual
Editing custom defined fields
Custom Defined Fields enable you to add custom data you can also search in a search index file. To add a Custom Defined Field:
- Double click the text marked Double click to add new item.
- Type the custom data you want in the text box.
- Press Enter or the Num Pad Enter key to register the new data.
- Double-click again on the Double click to add new item text to add another field.
- Type another line of data in the text box.
- Press Enter or the Num Pad Enter key to register the name.
- To delete a custom field, click a field you added and click the Delete button.

Tip: If making several edits on PDF documents using Save As and rewriting a file redcues the file size.
Related info: Nitro Pro 5 Help
How to optimize & reduce PDF file size
How to edit PDF metadata
How to view PDF file properties