pdftk

PDFTK (PDF Toolkit) is a command line tool used for manipulating PDF files. It provides various features to perform tasks such as merging, splitting, encrypting, decrypting, repairing, and extracting information from PDFs.

One of the main functionalities of PDFTK is merging multiple PDFs into a single document. This can be done by specifying the input files and providing an output filename. PDFTK can also rearrange pages within a PDF by specifying the page range or individual pages to be included.

Splitting a PDF into multiple smaller documents is another feature of PDFTK. This can be achieved by specifying the input PDF and the pages to be extracted as separate output PDFs.

Encryption and decryption options are available in PDFTK to protect PDFs with passwords. It supports both owner and user passwords, allowing restriction on document permissions like printing, copying, and modifying.

PDFTK can also be used to repair and optimize corrupted PDF files. It automatically handles issues such as missing objects, incorrect cross-references, and damaged fonts.

Extracting data from PDFs is another functionality of PDFTK. It can extract specific pages, form fields, and metadata from PDFs, providing flexibility to access and reuse the required information.

PDFTK supports various platforms including Windows, macOS, and Linux, making it versatile for different operating systems.

The command line interface of PDFTK allows for easy automation and integration into scripts and workflows, making it ideal for bulk operations on PDF files.

PDFTK is an open-source tool released under the GNU General Public License (GPL), allowing developers and users to modify, distribute, and customize its functionality.

PDFTK has a comprehensive documentation and a large user community, providing resources, guides, and support for troubleshooting and advanced usage.