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Extracting Watermarks from Documents

Updated on 2024-12-27 GMT+08:00

The content of invisible watermarks cannot be seen and needs to be extracted using tools. This section describes how to extract watermarks from a PDF, PPT, Word, or Excel file stored on the cloud (OBS buckets) or local PC.

Prerequisites

Constraints

  • This section focuses on the extractions of invisible watermarks from a single PDF, PPT, Word, or Excel file.
  • 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 an OBS Bucket File Watermark Extraction 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 tree on the left, choose Data Asset Protection > Document Watermarking. On the displayed page, click the OBS File tab.
  5. Click the Watermark Extraction tab. The Watermark Extraction page is displayed.
  6. Click Create Task in the upper left corner. The Create Task page is displayed.
  7. Click Add File to select the file from which you want to extract watermarks. You can select multiple OBS bucket files.
  8. Click OK. The watermark extraction task is created.
  9. Click the target task name. In the dialog box that is displayed, view the watermark extraction task status and the invisible watermark content of the OBS bucket file.

    • Running: You can view the progress of the watermark extraction task.
    • Completed: The watermark content is displayed in the Invisible Watermarks column. If there are no invisible watermarks, -- is displayed.
    • Failed: The watermark extraction task fails to be executed. You can move the cursor to to view the failure cause.

Extracting Watermarks from Local Files

  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 tree on the left, choose Data Asset Protection > Document Watermarking. On the displayed page, click the OBS File tab.
  5. On the displayed page, choose Local > Extract Watermark. The Extract Watermark page is displayed.
  6. Upload the local file from which you want to extract the watermark text.

    NOTE:

    Only PDF, PPT, Word, and Excel files are supported.

  7. After the file is uploaded, click OK. The invisible watermark content is displayed in the dialog box.

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