Delete signatures from documents by ID Leave feedback

GroupDocs.Signature provides TextSignature class to manipulate text signatures and delete them from the documents. Please be aware that Delete method modifies the same document that was passed to constructor of Signature class.

Here are the steps to delete Text signature from the document with GroupDocs.Signature:

• Create new instance of Signature class and pass source document path as a constructor parameter;
• Instantiate TextSearchOptions object with desired properties;
• Call Search method to obtain list of TextSignatures;
• Select from list TextSignature object(s) that should be removed from the document;
• Call Signature object Delete method and pass one or several signatures to it.

This example shows how to delete Text signature that was found using Search method.

  // The path to the documents directory.  
  const filePath = Constants.SAMPLE_PDF_SIGNED; 
  const fileName = path.basename(filePath);

  const outputDirectory = path.join(Constants.OutputPath, 'DeleteById');
  if (!fs.existsSync(outputDirectory)) {
    fs.mkdirSync(outputDirectory, { recursive: true });
  }

  // Copy source file since the delete method works with the same Document
  const outputFilePath = path.join(outputDirectory, fileName);

  fs.copyFileSync(filePath, outputFilePath);

  const signature = new signatureLib.Signature(outputFilePath);

  const id = 'eff64a14-dad9-47b0-88e5-2ee4e3604e71';
  const result = await signature.delete(id);
  if (result) {
    console.log(`Signature with Id# '${id}' was deleted from document ['${fileName}'].`);
  } else {
    console.log(`Signature was not deleted from the document! Signature with id# '${id}' was not found!`);
  }

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

Along with the full-featured .NET library, we provide simple but powerful free online apps.

To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.