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Updated at: Apr 02, 2022 GMT+08:00

Watermark Extraction

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 (HUAWEI CLOUD OBS bucket) or local PC.

Prerequisites

  • You have obtained credentials for logging in to the management console.
  • Watermarks can be added for the PDF, PPT, Word, and Excel files.

Constraints

This section describes how to extract invisible watermarks from PDF, PPT, Word, or Excel documents.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner of the management console and select a region or project.
  3. In the navigation pane on the left, click and choose Security & Compliance > Data Security Center.
  4. In the navigation pane, choose Data Watermarking. In the upper left corner of the page, click the Extract Watermark tab.

    Figure 1 Accessing the watermark extraction page

  5. Select a file from which you want to extract the watermark text.

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

    • If the files from which watermarks are extracted are stored in the HUAWEI CLOUD OBS bucket, select Cloud for Select File, locate the bucket, and select the target file. Click OK.
      Figure 2 Selecting a cloud file
    • If the files from which watermarks are extracted are stored on the local PC, select Local for Select File, select the file, and upload it to DSC.

  6. After the file is uploaded, click OK.

    Figure 3 Watermark extraction completed

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