@file-type/pdf

@file-type/pdf

Detector plugin for file-type that identifies PDF (Portable Document Format) files and selected PDF-based subtypes.

This plugin goes beyond simple magic-number detection and can inspect the internal PDF structure to distinguish between generic PDF files and specific producer formats such as Adobe Illustrator (.ai).

The detector is designed to be:

• tokenizer-based (using strtok3)
• streaming-friendly
• safe to chain with other file-type detectors
• compatible with both Node.js and browser environments

Installation

npm install @file-type/pdf

Usage

The following example shows how to add the PDF detector to file-type:

import { FileTypeParser } from 'file-type';
import { detectPdf } from '@file-type/pdf';

const parser = new FileTypeParser({
  customDetectors: [detectPdf],
});

const fileType = await parser.fromFile('example.pdf');
console.log(fileType);

Supported file formats

• .ai / application/illustrator: Adobe Illustrator
• .pdf / application/pdf: Generic Portable Document Format files

License

This project is licensed under the MIT License. Feel free to use, modify, and distribute it as needed.