Creating the Document Structure with Auto Tags

Auto tags provide an initial structure for a PDF document. When auto-tagging is applied, Nitro PDF Pro analyzes the document and automatically generates a tag structure. 

After auto-tagging is completed, the resulting structure must be reviewed and adjusted manually to ensure accuracy. 

Before you start 

• Verify whether the document already contains a tag structure 

• When auto-tagging is applied, existing tags are removed and replaced 

• This action cannot be undone. To preserve existing tags, use manual tagging instead. 

Create a document structure using auto tags 

1. Open the PDF in Nitro PDF Pro 
2. Select Accessibility > Auto tag
3. If the document already contains tags, select Yes to overwrite them
4. Review the generated tag structure in the Tags panel 
5. Save the document:  

• Select Save in the top bar, or  

• Press Ctrl+S

Last updated: June 2026