@isneezy/pdf-generator

@isneezy/pdf-generator is a powerful and versatile library that allows you to convert HTML pages, templates, and URLs into high-quality PDF documents using Chromium and Puppeteer.

With @isneezy/pdf-generator, you can easily create PDFs with support for table of contents and various page configurations such as page size, margins, and more. The library is designed to be easy to use and integrate into your existing projects, making it the perfect solution for developers looking to add PDF functionality to their applications.

Installation

To install the package, you can use npm or yarn.

npm install @isneezy/pdf-generator

yarn add @isneezy/pdf-generator

Usage

The package exports a single class PdfGenerator that you can use to create a new instance of the library

import PdfGenerator from '@isneezy/pdf-generator'

const instance = PdfGenerator.instance()

The class has the following methods:

generate(options: Options): Promise<Buffer>

This method generates a PDF from the provided options and returns a promise that resolves to a buffer with the PDF content.

The options object has the following shape:

Option	Type	Description
goto	string	URL to the HTML content/handlebars template to be converted to PDF. If provided, it takes priority over the template option.
template	string	HTML content/Handlebars template to be converted to PDF. If a goto option is provided, this option will be ignored.
context	object	The data that will be passed to the handlebars template for rendering.
headerTemplate	string	Handlebars template to be rendered as the page header
footerTemplate	string	Handlebars template to be rendered as the page footer. If a footer template is provided in the document, this option will take priority.
format	string	Sets the paper format to be used when printing a PDF. Accepted values include: letter, legal, tabloid, ledger, a0, a1, a2, a3, a4, a5, a6.
landscape	boolean	If set to true, the PDF will be generated in landscape orientation, otherwise it will be generated in portrait orientation.
margin	object	An object with the properties top, bottom, left, right which sets the page margins. The values should be strings with units, e.g. "10mm".

close(): Promise<void>

This method releases the resources used by the instance of the PdfGenerator class, it should be called after using the generate method.

instance.close()

Example

Here is an example of how to use the library to generate a PDF from a handlebars template and context data:

import { writeFileSync } from 'fs'
import PdfGenerator from '@isneezy/pdf-generator'

const template = '<p>Hello from {{ name }}</p>'
const context = { name: 'PDF Generator' }
// Creates a new instance of PdfGenerator
const instance = PdfGenerator.instance()

// generate the PDF file
instance.generate({ template, context })
  .then(buffer => {
// write the file to disk
    writeFileSync('path/to/the/output.pdf', buffer)
  })
  .finally(instance.close)