Data redaction is the process of selectively removing or obscuring sensitive information from a document or dataset before it is shared or made accessible. The goal is to protect confidential or personally identifiable information (PII) while allowing the remaining data to be viewed or used. Data redaction is commonly applied to documents, images, or databases, where specific details, such as names, addresses, or financial information, are concealed to prevent unauthorized access. The redacted information is often replaced with black bars, empty spaces, or placeholder text, ensuring that the sensitive content is not exposed while still retaining the overall structure and context of the original data.