pdfrex

pdfrex is a command-line tool and Deno module for manipulating PDF files. It offers functionality to split, merge, and perform other PDF operations, making it a versatile tool for managing PDFs programmatically. pdfrex is built using the pdf-lib library, ensuring efficient and high-quality PDF manipulation.

Features

• Merge PDFs: Combine multiple PDFs into one.
• Split PDFs: Separate a PDF into individual pages.
• Flexible CLI: Easily execute PDF operations from the command line.
• Programmatic Use: Import pdfrex functions directly in Deno (or Node) projects.

Installation

To install pdfrex as a CLI tool, run:

deno install --global --allow-read --allow-write jsr:@jackfiszr/[email protected]

This command installs pdfrex globally, enabling the pdfrex command with merge and split subcommands.

Permissions

Since pdfrex reads and writes files, it requires the following permissions:

• --allow-read for reading PDF files.
• --allow-write for writing merged or split PDF files.

Usage

General CLI Usage

pdfrex <command> [options]

Commands

• merge: Combines multiple PDF files into a single document.
• split: Divides a PDF document into individual pages.

Merge

Combine multiple PDF files into one.

CLI Usage

pdfrex merge -d <directory> -f <file1,file2,...> -o <output-file>

Options

• -d, --dir <string>: Directory to search for PDF files to merge (defaults to the current directory).
• -f, --files <string>: Specific files to merge (comma-separated).
• -o, --output <string>: File path for the output merged PDF (defaults to merged.pdf in the current directory).

Examples

1. Merge all PDFs in a directory:

   pdfrex merge -d ./pdfs -o combined.pdf

2. Merge specific files:

   pdfrex merge -f file1.pdf,file2.pdf,file3.pdf -o result.pdf

Split

Split a PDF into individual pages.

CLI Usage

pdfrex split -d <directory> -f <file1,file2,...> -o <output-dir> -p <prefix>

Options

• -d, --dir <string>: Directory to search for PDF files to split (defaults to the current directory).
• -f, --files <string>: Specific files to split (comma-separated).
• -o, --output-dir <string>: Directory to save the split PDF pages (default creates a new directory named after the source file).
• -p, --prefix <string>: Prefix for naming split files (default is the source file name).

Examples

1. Split all PDFs in a directory:

   pdfrex split -d ./pdfs -o ./split_pdfs

2. Split a specific file with a custom prefix:

   pdfrex split -f my_document.pdf -o ./output -p page

Programmatic Usage

Import pdfrex functions in your Deno project to perform PDF operations directly.

Merge PDFs

import { mergeAll, mergePdfs } from "jsr:@jackfiszr/[email protected]";

// Merge all PDFs in the current directory
await mergeAll();

// Merge all PDFs in a specified directory
await mergeAll({ dir: "./my_pdfs" });

// Merge specific files with a custom output path
await mergePdfs(["file1.pdf", "file2.pdf", "file3.pdf"], {
  output: "combined.pdf",
});

Split PDFs

import { splitAll, splitPdf } from "jsr:@jackfiszr/[email protected]";

// Split all PDFs in the current directory
await splitAll();

// Split a specific PDF
await splitPdf("document.pdf", { outputDir: "./pages", prefix: "page" });

Adding to a Node.js project

npx jsr add @jackfiszr/[email protected]

import { mergePdfs, splitPdf } from "@jackfiszr/[email protected]";

Contributing

Contributions, issues, and feature requests are welcome! Feel free to check out the issue tracker and contribute.

License

This project is licensed under the MIT License.