Redact PDF Content Online Redact PDF content.

The tool works by utilizing the PDF-lib library to load and process PDF files in the browser, allowing for client-side redaction of sensitive information. When a user uploads a PDF file, the tool uses the `PDFDocument.load` method to parse the file's contents, ignoring any encryption that may be present. The `redactTextInStream` function is then used to replace matching terms with spaces, and this process is performed on each page of the document. To handle compressed streams, the tool employs the inflateRaw function, which utilizes the DecompressionStream API to decompress FlateDecode streams, enabling the redaction of text within these streams. The use of React and memoization ensures that the tool's UI remains responsive and efficient, even when handling large PDF files. Additionally, the tool's implementation of the Clipboard API allows for seamless interaction with the user's clipboard, making it easy to copy and paste redacted text. Under the hood, the tool relies on data structures such as arrays and Uint8Arrays to store and manipulate the PDF file's contents, and it uses JavaScript's built-in string manipulation methods, such as `replace` and `split`, to perform the actual redaction. The PDF-lib library provides a set of classes and methods for working with PDF files, including `PDFDocument`, `PDFPage`, and `PDFRawStream`, which are used extensively throughout the tool's code. By leveraging these technologies and APIs, the tool is able to provide a fast and efficient way to redact sensitive information from PDF files entirely in the browser. The tool also uses React hooks such as `useState` and `useCallback` to manage its state and handle user interactions, ensuring that the UI remains up-to-date and responsive throughout the redaction process.