RedactGo is a free online tool that allows users to redact content from PDF files directly within a web browser. Its primary function is to permanently remove sensitive or private information from a PDF by letting the user draw a black box over any text, image, or page region. The redacted areas are replaced with solid black, while all other text remains searchable and copyable. The service processes the file entirely on the user’s device, meaning the PDF never leaves the browser, and no file is uploaded to an external server. No account, email, signup, or payment is required to start, and no watermark is added to the output. The main features include support for PDF files up to 10 megabytes in size, with no daily file quota or limit on the number of files processed. The complete workflow consists of four steps: uploading the PDF by dragging and dropping or clicking to browse, drawing redaction boxes over the content to hide, applying the redaction to permanently remove the marked content, and then previewing and downloading the final redacted file. The original file remains unchanged on the user’s device. The tool also provides options to undo a mistake, mark an entire page, and add multiple redaction regions across several pages. Typical use cases involve redacting personal details such as names, account numbers, signatures, or photographs before sharing a document. The tool is suitable for any situation where sensitive information must be removed from a PDF without installing desktop software. The guide also explains the difference between RedactGo’s dedicated redaction workflow and using shape tools or Word conversion, which do not permanently remove content. Technical requirements include a modern browser with JavaScript enabled, as the PDF processing occurs locally. The tool does not require any additional software or extensions.