Add a watermark to PDF or remove previously added watermarks using Ruby

Using this Ruby library, stamp PDF documents with an image or text watermark or remove an already added watermark in a few steps

Add a text or image watermark to PDF documents using Ruby. Load the PDF document and insert the required watermark into it. Then save the result in a convenient format such as DOCX, PDF, MD, HTML, TXT, DOC, RTF, EPUB, XPS and more, and share the watermarked document with another person. Also remove the watermark from PDF document if the watermark was previously added to the document, and the reasons for adding are not longer relevant.

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PDF – add watermark in Ruby

With this Ruby API, developers can add a watermark to PDF online. Just create the watermark using text or an image and then insert that watermark into your PDF document in Ruby.

Note: there is no need to install any third party applications or libraries. Therefore, our Ruby software solution is very easy to use.

Remove watermark from PDF – Ruby

The given Ruby SDK is also helpful to remove watermarks from PDF. Removing a watermark in PDF means that you can load the desired PDF document stamped with a text or image watermark, remove this watermark from the PDF using Ruby, and then save the output file in a convenient format – DOC, DOCX, PDF, JPEG, PNG, TIFF and others.

Work with watermark in PDF

To evaluate how to add or remove a watermark in PDF with our Ruby API, load the PDF and the watermark as an image or text. Then select a convenient export file format – DOC, DOCX, PDF, HTML, RTF, XPS and others.

Use the following example to see how it works:

File needs to add watermarks
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Select the target format from the list
require 'aspose_words_cloud'

AsposeWordsCloud.configure do |config|
  config.client_data['ClientId'] = '####-####-####-####-####'
  config.client_data['ClientSecret'] = '##################'
end
@words_api = WordsAPI.new

request_document = File.open('Input1.pdf')
request_image_file = File.open('Input2.pdf')
insert_watermark_image_online = InsertWatermarkImageOnlineRequest.new(
   document: request_document, image_file: request_image_file)
inserted_watermark_image = 
   @words_api.insert_watermark_image_online(insert_watermark_image_online)

request_document = File.open('document')
convert_document = ConvertDocumentRequest.new(
   document: inserted_watermark_image.document.values[0], format: 'pdf')
@words_api.convert_document(convert_document)
require 'aspose_words_cloud'

AsposeWordsCloud.configure do |config|
  config.client_data['ClientId'] = '####-####-####-####-####'
  config.client_data['ClientSecret'] = '##################'
end
@words_api = WordsAPI.new

request_document = File.open('Input.pdf')
request_watermark_text = WatermarkText.new(
   {:Text => 'This is the watermark text.', :RotationAngle => 90})
insert_watermark_text_online = InsertWatermarkTextOnlineRequest.new(
   document: request_document, watermark_text: request_watermark_text)
inserted_watermark_text = @words_api.insert_watermark_text_online(insert_watermark_text_online)

request_document = File.open('document')
convert_document = ConvertDocumentRequest.new(
   document: inserted_watermark_text.document.values[0], format: 'pdf')
@words_api.convert_document(convert_document)
require 'aspose_words_cloud'

AsposeWordsCloud.configure do |config|
  config.client_data['ClientId'] = '####-####-####-####-####'
  config.client_data['ClientSecret'] = '##################'
end
@words_api = WordsAPI.new

request_document = File.open('Input.pdf')
delete_watermark_online = DeleteWatermarkOnlineRequest.new(document: request_document)
deleted_watermark = @words_api.delete_watermark_online(delete_watermark_online)

convert_document = ConvertDocumentRequest.new(
   document: deleted_watermark.document.values[0], format: 'pdf')
@words_api.convert_document(convert_document)
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How to remove watermark in PDF using Ruby

  1. Install Aspose.Words Cloud for Ruby
  2. Add a library reference (import the library) to your Ruby project
  3. Configure API using your app keys
  4. Load PDF document you want to remove the watermark from
  5. Create a request to remove the watermark
  6. Save the result to a convenient file format

Ruby library to use watermarks in PDF

Install Aspose.Words Cloud SDK for Ruby using RubyGems hosting service. Run gem install aspose_words_cloud to install the package. As an alternative, you can manually clone Aspose.Words Cloud SDK for Ruby source code from GitHub and use it in your project. Please follow these Instructions to quickly get the necessary security credentials and access our REST API.

System Requirements

Ruby 2.6 or newer

Refer to the Repository Documentation to see the details.

Other supported file formats

You can add a watermark to a document in other formats:

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