Get PDF Object

This guide will walk you through the process of the getting a specific PDF object using object number.

Sample Input #

Before you begin #

You should get your API key from your UniCloud 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 analysis folder in the unipdf-examples directory.

cd unipdf-examples/analysis

How it works #

In the example attached above, the import section in lines 10-17, imports all the necessary UniPDF packages and other Go libraries. The init function defined in lines 19-26, loads the metered API key and sets the license prior to using the UniPDF packages.

The main function defined in lines 28-59, prints the PDF object details by using the PrintPdfObject function. First, in the main function inputPath is obtained from the command line arguments in line 36. Then, a new PdfReader is created using model.NewPdfReaderFromFile(inputPath, nil) in line 48.

As a result, in line 54, the PDF object is obtained and printed using PrintPdfObject of PdfReader.

Run the code #

Run the code using the following command:

go run pdf_get_object.go input.pdf [num]

Sample output #

The following output displays the PDF object with object number 10.

Input file: sample.pdf
Object 10: IObject:10
*core.PdfObjectDictionary
Dict("Creator": Rave (http://www.nevrona.com/rave), "Producer": Nevrona Designs, "CreationDate": D:20060301072826, )