BleachPDF vs Redact PDF AI

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.

Redact PDF AI detects personal and sensitive information in PDFs and image files, then applies redactions. Users can select categories such as names, email addresses, phone numbers, organizations, dates, IBANs, and credit card numbers. Built-in OCR supports scanned documents, and the service says it handles more than 100 document languages, including mixed-language files. In the Studio editor, users can adjust redactions, add highlights, rotate pages, and exclude specified terms from masking. Multiple files can be uploaded together and downloaded as a ZIP. The features page lists support for PDFs up to 50 MB and documents of 1,000 or more pages. A REST API supports asynchronous jobs, batch uploads, PII controls, and configurable retention on every plan, using the same page quota. The maker says output pages are rasterized so redactions are burned into pixels and recoverable text layers are removed. It says documents are processed on Microsoft Azure in Frankfurt and Switzerland North, encrypted at rest and in transit, and automatically deleted after 14 days of inactivity by default. Starter is $50 a month; Business is $250 a month. A one-time prepaid credit offer is 5.00 USD.