Form handling: Support operations on forms in PDF files, such as sorting, filtering, etc.Annotations and links: Support adding annotations and links for easy reading and communication of documents.Password protection: Support setting access permissions for documents to protect their security.Digital signatures: Support digital signatures for convenient document sharing and verification.Convert PDFs: Convert PDF files into formats such as Microsoft Word, Excel, PowerPoint, etc.Create PDFs: Convert various file formats such as Microsoft Word, Excel, PowerPoint, etc.Here are the top 10 features of Adobe Acrobat Pro DC 2021: It provides a powerful set of tools for editing, combining, annotating, signing, and sharing PDF documents. Adobe Acrobat Pro DC 2021 is a PDF editing and management software released by Adobe in 2021.