While Perl isn't the go-to language for beginners anymore, it remains a powerhouse behind sites like Craigslist, IMDb, and DuckDuckGo. As a developer with years of experience using Perl in production environments, I've relied on its Plain Old Documentation (POD) system countless times. Here's a straightforward guide to opening POD files, viewing them properly, and converting them—including to PDF.
POD isn't obsolete—it's efficient documentation embedded right in your Perl code.
POD, or Plain Old Documentation, is a simple markup language similar to Markdown. It writes documentation directly into Perl source files (.pl or .pm) as comments, or as standalone .pod files for user-facing manuals.
Embedded POD keeps docs with the code, ideal for scripts. Standalone POD files suit larger projects or end-user guides, avoiding the need to sift through source code.
POD in Perl scripts (.pl/.pm) lives between code lines. Pure .pod files are documentation only—no code included.
Any text editor opens them, but raw markup is hard to read, like viewing HTML source.
Use the built-in perldoc tool instead—it's included with Perl installations. Most Linux/macOS systems have Perl pre-installed; Windows users can download Strawberry Perl easily.
Open your terminal, navigate to the file, and run perldoc filename.pod. For example: perldoc library.pod. It renders beautifully formatted output.
Perldoc is great locally, but for sharing or offline reading, convert POD. All tools below are Perl modules—install via CPAN.
To HTML: Use pod2html filename.pod for a single HTML file.
To PDF: Use pod2pdf filename.pod. Simple and direct.
Alternative: Convert to HTML, open in Chrome/Firefox, and "Print to PDF."
To Markdown: pod2markdown filename.pod—widely compatible.
To LaTeX: pod2latex filename.pod for academic docs.
To plain text: pod2text filename.pod for ASCII output.
POD has a minimal learning curve, especially if you've used Markdown. It's a trusted part of Perl's ecosystem for good reason.
What's your Perl project? Share tips or questions in the comments!
