Get watermarks from PDF via Go SDK
API for getting watermarks from PDF documents with Aspose.PDF Cloud Go SDK
Get StartedHow to extract watermarks from PDF documents using Cloud Go SDK
For getting watermarks from PDF documents, we’ll use Aspose.PDF Cloud Go SDK This Cloud Go SDK assists Go programmers in developing cloud-based PDF creator, annotator, editor, and converter apps using Go programming language via Aspose.PDF REST API. Use the following command from the Package Manager Console.
Package Manager Console Command
go get -u github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25
Steps to get watermarks using Go
Aspose.PDF Cloud Go developers can easily extract watermarks from PDF documents. Developers need just a few lines of code.
- Define the Function
- Upload the PDF to Cloud Storage
- Set Request Parameters
- Get All Pages in the PDF
- Iterate Over Each Page
- For Each Image Found on the Page
This sample code shows extracting watermarks from PDF document using PDF Cloud Go SDK
package main
import (
"fmt"
asposepdfcloud "github.com/aspose-pdf-cloud/aspose-pdf-cloud-go/v25"
)
// Extract images watermarks from document and show info to console
func GetWatermarks(pdf_api *asposepdfcloud.PdfApiService, document string, remoteFolder string) {
uploadFile(pdf_api, document)
args := map[string]interface{}{
"folder": remoteFolder,
}
result, httpResponse, err := pdf_api.GetPages(document, args)
if err != nil {
fmt.Println(err.Error())
} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
fmt.Println("GetPages() - Unexpected error!")
} else {
for pageNum := range result.Pages.List {
imageResult, httpResponse, err := pdf_api.GetImages(document, int32(pageNum+1), args)
if err != nil {
fmt.Println(err.Error())
} else if httpResponse.StatusCode < 200 || httpResponse.StatusCode > 299 {
fmt.Println("Unexpected error!")
} else {
for _, image := range imageResult.Images.List {
fmt.Println("Page", pageNum+1, "Image Id=", image.Id, "LinkId:", image.Links[0].Href, "Width:", (image.Rectangle.LLY - image.Rectangle.LLX), "Height:", (image.Rectangle.URY - image.Rectangle.URX))
}
}
}
}
}
Work with the watermarks in PDF via Go SDK
Watermarks can deter unauthorized use or distribution by clearly marking the document with ownership or copyright information, protecting original content from being misused or redistributed without permission. In some cases, watermarks are added as a subtle design feature to enhance the look and feel of a document, providing a professional, polished appearance that reflects the brand identity. Check details - Aspose.PDF Cloud Go SDK.
With our Go SDK you can
- Add PDF document’s header & footer in text or image format.
- Add tables & text or image stamps to PDF documents.
- Append multiple PDF documents to an existing file.
- Work with PDF attachments, annotations, & form fields.
- Apply encryption or decryption to PDF documents & set a password.
- Delete all stamps & tables from a page or entire PDF document.
- Delete a specific stamp or table from the PDF document by its ID.
- Replace single or multiple instances of text on a PDF page or from the entire document.
- Extensive support for converting PDF documents to various other file formats.
- Extract various elements of PDF files & make PDF documents optimized.
- You can try out our free App to get the watermarks from PDF files online and test the functionality.
- Learning Resources
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