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mutool is a command-line utility developed by Artifex Software that serves as an all-purpose instrument for manipulating PDF documents, currently distributed in version 1.23.0 and offered in two distinct release streams. Designed for technical users who need scriptable, lightweight access to PDF internals, the program exposes the same rendering and parsing engine used by MuPDF, allowing it to inspect, extract, clean, merge, split, encrypt, decrypt, linearise, and convert pages or entire files without loading a graphical interface. Typical workflows include batch extraction of images or fonts from academic papers, automated sanitisation of print-ready proofs prior to press, forensic verification of object structures inside digitally signed contracts, and server-side conversion of incoming PDF forms into raster or SVG thumbnails for web display. Because mutool operates entirely through switches and optional parameters, it integrates readily with CI pipelines, makefiles, or scheduled tasks on Windows, macOS, and Linux hosts, producing predictable exit codes that downstream scripts can test. The tool also exposes lower-level sub-commands such as ‘clean’ for rewriting inefficient page streams, ‘info’ for dumping metadata dictionaries, and ‘draw’ for high-fidelity rendering at arbitrary resolutions, making it equally useful for archivists, pre-press technicians, and developers who embed PDF support into their own products. mutool is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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