pdf.js/examples/node/pdf2png/README.md

## Overview

Example to demonstrate converting a PDF file to a PNG image using the PDF.js library.

## Getting started

Install the dependencies and build the PDF.js library:

    $ npm install
    $ gulp dist-install

Run the example to convert the first page of a PDF file to a PNG image:

    $ cd examples/node/pdf2png
    $ node pdf2png.mjs
Example for converting PDF to PNG using the Node canvas library 2017-03-03 01:48:33 +05:30			`## Overview`

			`Example to demonstrate converting a PDF file to a PNG image using the PDF.js library.`

			`## Getting started`

Improve the instructions and code for the `pdf2png` example We need to pass `disableFontFace` and `nativeImageDecoderSupport` because Node.js has no native support for `@font-face` and `Image`. Doing so makes it possible to render e.g., the Tracemonkey paper, which failed before. I made this PDF file the default because it's also the default in other examples/demos and because it showcases the possibilities better than the very simple hello world PDF file. Building the library with `gulp dist-install` is easier and is already recommended in the other examples. 2018-04-01 12:41:15 +02:00			`Install the dependencies and build the PDF.js library:`
Example for converting PDF to PNG using the Node canvas library 2017-03-03 01:48:33 +05:30
			`$ npm install`
Improve the instructions and code for the `pdf2png` example We need to pass `disableFontFace` and `nativeImageDecoderSupport` because Node.js has no native support for `@font-face` and `Image`. Doing so makes it possible to render e.g., the Tracemonkey paper, which failed before. I made this PDF file the default because it's also the default in other examples/demos and because it showcases the possibilities better than the very simple hello world PDF file. Building the library with `gulp dist-install` is easier and is already recommended in the other examples. 2018-04-01 12:41:15 +02:00			`$ gulp dist-install`
Example for converting PDF to PNG using the Node canvas library 2017-03-03 01:48:33 +05:30
[api-minor] Replace the `canvas` package with `@napi-rs/canvas` The `@napi-rs/canvas` package has fewer dependencies, which should hopefully make installing and using it easier for `pdfjs-dist` end-users. (Over the years we've seen, repeatedly, that `canvas` can be difficult to install successfully.) Furthermore, this package includes more functionality (such as `Path2D`) which reduces the overall number of dependencies in the PDF.js project. One point to note is that `@napi-rs/canvas` is a fair bit newer than `canvas`, and has a lot fewer users, however looking at the commit history it does seem to be actively maintained. Note that I've successfully tested the [Node.js examples](https://github.com/mozilla/pdf.js/tree/master/examples/node), in particular the `pdf2png` one, with this patch applied and things appear to work fine. Please see: - https://www.npmjs.com/package/@napi-rs/canvas - https://github.com/Brooooooklyn/canvas 2024-11-08 11:29:24 +01:00			`Run the example to convert the first page of a PDF file to a PNG image:`
Example for converting PDF to PNG using the Node canvas library 2017-03-03 01:48:33 +05:30
			`$ cd examples/node/pdf2png`
[api-minor] Replace the `canvas` package with `@napi-rs/canvas` The `@napi-rs/canvas` package has fewer dependencies, which should hopefully make installing and using it easier for `pdfjs-dist` end-users. (Over the years we've seen, repeatedly, that `canvas` can be difficult to install successfully.) Furthermore, this package includes more functionality (such as `Path2D`) which reduces the overall number of dependencies in the PDF.js project. One point to note is that `@napi-rs/canvas` is a fair bit newer than `canvas`, and has a lot fewer users, however looking at the commit history it does seem to be actively maintained. Note that I've successfully tested the [Node.js examples](https://github.com/mozilla/pdf.js/tree/master/examples/node), in particular the `pdf2png` one, with this patch applied and things appear to work fine. Please see: - https://www.npmjs.com/package/@napi-rs/canvas - https://github.com/Brooooooklyn/canvas 2024-11-08 11:29:24 +01:00			`$ node pdf2png.mjs`