PDF to Image

This guide will show you how to render all the pages in a PDF document to images in JPEG format and saves them in the specified output directory.

You can also render all the pages in a PDF to images using a custom image encoder.

Sample Input #

Before you begin #

You should get your API key from yourUniCloud account.

If this is your first time using UniPDF SDK, follow this guide to set up a local development environment.

Clone the project repository #

In your terminal, clone the examples repository. It contains the Go code we will be using for this guide.

git clone https://github.com/unidoc/unipdf-examples.git

Navigate to the render folder in the unipdf-examples directory.

cd unipdf-examples/render

How it works #

Lines 12-22 import the UniPDF packages and other required dependencies.

The init function in lines 24-31 authenticates your request with your UNIDOC_LICENSE_API_KEY.

The main function in lines 33-80 validates your input and renders each page in the input PDF to a PNG file. The PNG files are saved to the specified output directory.

Run the code #

Run this command to convert PDF pages to images. This will also get all the required dependencies to run the program.

go run pdf_image_render.go OUTPUT_DIR INPUT.pdf

Sample output #

Each page in the input PDF is rendered as an image in the output directory.