BleachPDF vs Redactable

BleachPDF is a free desktop utility for Linux and macOS that redacts sensitive information from PDF files, including scanned pages. It converts each page into an image, applies OCR to locate text you specify, covers matches with black boxes, and writes a new PDF. The resulting file contains images only, so it has no hidden text layer that could reveal redacted wording through copying and pasting. Matching can use exact text or more complex patterns, including case-insensitive rules and digit patterns. Its command line accepts a folder or file pattern for batch processing. After redaction, BleachPDF rescans the output; if matching text is still exposed, verification fails and processing stops. It runs locally without uploading documents. Installation uses pip and requires Tesseract, with OCR language selection such as eng or eng+kor. Handwriting, unusual fonts, poor scans, and tiny dense text can cause recognition errors, so manual checking is advised.

Redactable is a web-based platform for detecting and permanently removing sensitive information from documents and images. Its AI identifies personal, health, financial, and other sensitive patterns for redaction. Built-in OCR makes scanned documents and image-based PDFs searchable before redaction. Supported inputs include PDF, TIFF, PNG, and JPG files from device uploads or supported third-party services; output is PDF. Redactable says it removes hidden metadata, embedded objects, and residual data from redacted files. Collaboration tools include shared workspaces, task assignments, comments, role-based permissions, activity logs, and version history. It can generate redaction certificates and audit logs recording who redacted what and when. Integrations listed include Google Drive, Dropbox, OneDrive, Box, SharePoint, and Clio. Redactable states that it is SOC 2 Type II certified and HIPAA compliant, uses AES-256 encryption at rest and TLS 1.2 or higher in transit, and does not retain document content beyond the redaction job or use it to train AI models. Three documents are free; pay-as-you-go costs $7.50 after that. Starter costs $19 a month billed annually.