Injecting Watermarks to Documents

Prerequisites

• OBS asset access permissions are granted. For details, see Allowing or Disallowing Access to Cloud Assets.
• You have enabled and created assets on OBS. For details about how to enable OBS, see Enabling and Using OBS Buckets..
• The document format is PDF, PPTX, DOCX, or XLSX.

Constraints

• The maximum size of a PDF or Word file is 50 MB.
• The maximum size of an Excel file is 70 MB.
• The maximum size of a PPT file is 20 MB.

Creating a Watermark Injection Task for Files in an OBS Bucket

1. Log in to the management console.
2. Click in the upper left corner and select a region or project.
3. In the navigation tree on the left, click . Choose Security & Compliance > Data Security Center .
4. In the navigation pane, choose Data Asset Protection > Document Watermarking.
5. Click Create Task in the upper left corner of the task list to create a task.
6. Set the parameters shown in Table 1.

   Table 1 Task parameters

   Parameter	Description
   Task Name	Enter the watermark ingestion task name. The value can contain only letters, digits, underscores (_), and hyphens (-), and cannot exceed 255 characters.
   Select File	Click Add File. In the right pane, select the name of the bucket to which you want to add a watermark. In the left pane, select a file. You can select multiple files.
   Watermark Type	Both visible and invisible watermarks are supported. You can select multiple values. Visible watermark: Watermarks are visible on documents. Invisible watermark: The watermark text is invisible and needs to be extracted using tools. For details about how to extract an invisible watermark, see Extracting Watermarks from Documents.
   Target Path	Click selecting a file path, and select the watermarked file.
   Configure Visible Watermark	Set the Watermark Type to Visible Watermark. Then, enter the watermark content and drag the slider to set the Text, Font Size, Font Angle, Sparseness, and Transparency.
   Configure Invisible Watermark	This parameter is mandatory when Watermark Type is set to Invisible. Set Text as required.

   Figure 1 Inserting Watermarks
   

7. Click OK. A message is displayed in the upper right corner, indicating that the watermark injection task is created successfully.
8. In the watermark task list, click the task name to view the task running status.
   • Running: You can view the progress of the watermark ingestion task.
   • Finished: You can click Download in the Operation column to download the watermarked OBS bucket file.
   • Failed: The watermark injection task fails to be executed. You can move the cursor to to view the failure cause.

9. If the injected watermark is a visible watermark, click Download to obtain the watermark file.

   If you injected an invisible watermark, extract the watermark from the target file using tools. For details, see Extracting Watermarks from Documents.

Creating a Local File Data Injection Task

1. Log in to the management console.
2. Click in the upper left corner and select a region or project.
3. In the navigation tree on the left, click . Choose Security & Compliance > Data Security Center .
4. In the navigation pane, choose Data Asset Protection > Document Watermarking.
5. Click the Local File tab. The Watermark Injection page is displayed.
6. Click Select File, and select the file to which the watermark is to be injected.
7. After the file is uploaded, configure related parameters. Table 2 describes the related parameters.

   Table 2 Watermarking parameters

   Parameter	Description
   Watermark Type	Both visible and invisible watermarks are supported. You can select multiple values. Visible watermark: Watermarks are visible on documents. Invisible watermark: The watermark text is invisible and needs to be extracted using tools. For details about how to extract an invisible watermark, see Extracting Watermarks from Documents.
   Configure Visible Watermark	Set the Watermark Type to Visible Watermark. Then, enter the watermark content and drag the slider to set the Text, Font Size, Font Angle, Sparseness, and Transparency.
   Configure Invisible Watermark	This parameter is mandatory when Watermark Type is set to Invisible. Set Text as required.

   Figure 2 Creating a Local File Data Injection Task
   

8. After parameters are configured, click OK. The file with watermark injected is automatically downloaded to the specified path on the local PC.
   

   • If you injected a visible watermark, open the target file to view the watermark.
   • If you injected an invisible watermark, extract the watermark from the target file using tools. For details, see Extracting Watermarks from Documents.