Working with PDFs (Portable Document Format) involves creating, editing, converting, and organizing documents in a format that is widely compatible across different devices and platforms. Here are some common tasks and tools for working with PDFs:

1. Creating PDFs:

   • Adobe Acrobat: Adobe Acrobat is a comprehensive tool for creating, editing, and managing PDF documents. You can create PDFs from various file formats or combine multiple documents into a single PDF.

2. Editing PDFs:

   • Adobe Acrobat: Adobe Acrobat allows you to edit text, images, and other elements within a PDF. You can add, delete, or rearrange pages as needed.
   • Online PDF Editors: Several online tools, such as SmallPDF, PDF-XChange Editor, or Sejda, offer basic PDF editing features.

3. Converting to PDF:

   • Microsoft Word/Excel/PowerPoint: Many applications have built-in options to save or export documents directly to PDF format.
   • Online Converters: Various online converters allow you to convert documents, images, or web pages to PDF. Examples include Zamzar, Online2PDF, and PDFcrowd.

4. Merging or Splitting PDFs:

   • Adobe Acrobat: Merge multiple PDFs into a single document or split a PDF into separate files using Adobe Acrobat.
   • Online Tools: Websites like SmallPDF and PDF Merge provide simple interfaces for combining or splitting PDF files.

5. Adding Annotations and Comments:

   • Adobe Acrobat: Use Adobe Acrobat to add comments, annotations, highlights, and other markups to your PDF documents.
   • PDF-XChange Editor: This is another tool that allows you to annotate and comment on PDFs.

6. Securing PDFs:

   • Password Protection: Adobe Acrobat enables you to set password protection on PDF files to restrict access or editing.
   • Encryption: Some tools allow you to encrypt PDFs to enhance security.

7. Optical Character Recognition (OCR):

   • Adobe Acrobat: Acrobat includes OCR functionality to convert scanned documents into editable text.
   • Online OCR Tools: Websites like OnlineOCR or Google Drive can perform OCR on scanned images or documents.

8. Redacting Sensitive Information:

   • Adobe Acrobat: Use the redaction tools in Adobe Acrobat to permanently remove sensitive or confidential information from a PDF.
   • PDFpen: PDFpen is another application that allows for redacting content.

9. Filling out Forms:

   • Adobe Acrobat: Fill out interactive PDF forms directly within Adobe Acrobat.
   • Online Form Fillers: Tools like PDFescape or DocHub provide online platforms for filling out PDF forms.

10. Digital Signatures:

    • Adobe Acrobat: Adobe Acrobat supports the addition of digital signatures for document authentication.
    • Online Signature Platforms: Services like DocuSign or HelloSign allow you to sign PDFs electronically.