Open the PDF in a PDF editor
Use the edit tool to modify text, images, or pages
Save the changes as a new PDF
If the PDF is scanned, run OCR first
If you only need to annotate, use comment or markup tools
If you need to fill forms, use the form fields
If the PDF is protected, unlock it with the correct password or permission
If editing is not possible, convert the PDF to Word or another editable format
Review the final file before sharing or printing