# Offline OCR & Document Redactor — Scanner Guides, Use-Case Guides, Developer Guides, Reference

For the full tool, see: [https://capytoolkit.com/tools/security/ocr-redactor/](https://capytoolkit.com/tools/security/ocr-redactor/)

## Scanner Guides

[Fujitsu ScanSnap iX1600](https://capytoolkit.com/tools/security/ocr-redactor/fujitsu-scansnap-ix1600-ocr/): Set up Fujitsu ScanSnap iX1600 for accurate OCR and document redaction. Covers DPI settings, disabling cloud sync, and feeding scans into the OCR Redactor.
[Epson WorkForce ES-400 II](https://capytoolkit.com/tools/security/ocr-redactor/epson-es400-ocr-redaction/): Configure Epson WorkForce ES-400 II for accurate OCR and document redaction. Covers DPI, ScanSmart setup, common bugs, and OCR Redactor workflow.
[Canon imageFORMULA R40](https://capytoolkit.com/tools/security/ocr-redactor/canon-r40-ocr-redaction/): Set up Canon imageFORMULA R40 for OCR and document redaction. Covers Windows 11 TWAIN driver fix, ReadIris alternatives, and OCR Redactor workflow.
[Adobe Scan (iOS/Android)](https://capytoolkit.com/tools/security/ocr-redactor/adobe-scan-ocr-redaction/): Use Adobe Scan to capture documents and redact them locally with zero uploads. Covers disabling Document Cloud sync, JPEG quality, and OCR Redactor workflow.
[Apple iPhone Document Scanner (iOS)](https://capytoolkit.com/tools/security/ocr-redactor/iphone-document-scanner-ocr/): Use iPhone's built-in document scanner for OCR and redaction. Covers Files app vs Notes, disabling iCloud sync, export formats, and OCR Redactor workflow.

## Use-Case Guides

[OCR Document Redaction: Extract and Redact in One Step](https://capytoolkit.com/tools/security/ocr-redactor/ocr-document-redaction/): Combine OCR and document redaction in a single browser workflow. Extract text from scanned images and redact sensitive regions locally with no uploads.
[Offline Document Redaction: Zero Uploads, Zero Cloud](https://capytoolkit.com/tools/security/ocr-redactor/offline-document-redaction/): Redact documents offline with no cloud uploads. Tesseract WASM runs entirely in your browser. Verify zero uploads with the browser network panel.
[Redacting Medical Records: Removing PHI from Scanned Documents](https://capytoolkit.com/tools/security/ocr-redactor/redact-medical-records/): Redact protected health information from scanned medical records locally. No uploads, no cloud, no hidden text layer. Browser-based OCR and redaction.
[Redacting Legal Documents: Court Filings, Discovery, and Contracts](https://capytoolkit.com/tools/security/ocr-redactor/redact-legal-documents/): Redact privileged information from scanned legal documents locally. No cloud uploads. Export raster images with no hidden text layer for court filings and discovery.
[HIPAA-Compliant Document Redaction: PHI Removal Without the Cloud](https://capytoolkit.com/tools/security/ocr-redactor/hipaa-compliant-document-redaction/): Redact protected health information from document images without cloud uploads. No business associate agreement needed. Raster export removes the hidden text layer.
[Redacting Passports and Government IDs Before Sharing](https://capytoolkit.com/tools/security/ocr-redactor/redact-passport-id/): Redact sensitive fields from passport, driver's license, and government ID scans locally. No uploads. Cover document numbers, dates, and photos before sharing.
[Redacting Financial Documents Before Sharing](https://capytoolkit.com/tools/security/ocr-redactor/redact-financial-documents/): Redact bank statements, tax returns, and pay stubs before sharing. Cover account numbers, routing numbers, SSNs, and balances locally with no uploads.
[Redacting NDA and Contract Terms Before Distribution](https://capytoolkit.com/tools/security/ocr-redactor/redact-nda-contract/): Redact confidential NDA terms, pricing clauses, and proprietary language from contracts before sharing with third parties. Browser-based, no uploads.
[FOIA Document Redaction: OCR Before Redacting Government Releases](https://capytoolkit.com/tools/security/ocr-redactor/foia-document-redaction/): Extract text and redact government FOIA releases delivered as scanned images. Browser-based OCR identifies text in low-resolution scans before redaction.
[Screenshot Text Extraction: Copy Text from Any Image](https://capytoolkit.com/tools/security/ocr-redactor/screenshot-text-extraction/): Extract text from screenshots, UI captures, and screen recordings using OCR. No scanner needed. Drop the image into the browser and copy the extracted text.
[Scanned Document Redaction: Why OCR Must Come First](https://capytoolkit.com/tools/security/ocr-redactor/scanned-document-redaction/): Redact scanned paper documents in two steps: OCR extracts text from the scan, then draw rectangles to remove sensitive fields. No uploads, no server.
[Redacting PII from Scanned Documents: Identifiers, GDPR, and Workflow](https://capytoolkit.com/tools/security/ocr-redactor/redact-personally-identifiable-information/): Remove personally identifiable information from scanned document images locally. No uploads. OCR identifies PII fields, draw rectangles to cover and remove them.

## Offline OCR & Document Redactor: Code Examples

[OCR Redaction in Java: Tess4J and Apache PDFBox](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#ocr-redaction-java): Implement OCR and document redaction in Java using Tess4J and Apache PDFBox. Code examples for rendering PDF pages, extracting text, and applying redaction.
[OCR Redaction in Python: pytesseract and PyMuPDF](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#ocr-redaction-python): Implement OCR and document redaction in Python using pytesseract and PyMuPDF. Code examples for extracting text, bounding boxes, and applying redactions.
[OCR Redaction in Node.js: Tesseract.js Worker Thread Approach](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#ocr-redaction-nodejs): Implement OCR and document redaction in Node.js using Tesseract.js 6.x. Code examples for Worker thread OCR, bounding box extraction, and image redaction.
[Tesseract.js in the Browser: How WASM OCR Works](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#tesseract-js-browser): Build a browser-based OCR tool using Tesseract.js and WebAssembly. The same engine that powers the OCR Redactor. Code examples and architecture explained.
[OCR Redaction in C#/.NET: Tesseract NuGet and Image Processing](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#ocr-redaction-csharp): Implement OCR and document redaction in C#/.NET using the Tesseract NuGet package. Code examples for bounding box extraction and System.Drawing redaction.
[PyMuPDF PDF Redaction: Permanent Content Removal with apply_redactions()](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#pymupdf-pdf-redaction): Permanently redact PDF content with PyMuPDF using add_redact_annot() and apply_redactions(). Removes underlying text from PDF structure, not just covers it.
[ocrmypdf and PyMuPDF: Full OCR-Then-Redact Pipeline for Scanned PDFs](https://capytoolkit.com/tools/security/ocr-redactor/code-examples/#ocrmypdf-searchable-pdf): Use ocrmypdf to add a searchable text layer to scanned PDFs, then redact sensitive content with PyMuPDF. CLI and Python pipeline for scanned document redaction.

## Offline OCR & Document Redactor Reference

[What Is OCR (Optical Character Recognition)?](https://capytoolkit.com/tools/security/ocr-redactor/reference/#what-is-ocr): Optical character recognition converts image pixels into machine-readable text. Learn how OCR engines like Tesseract work and what affects their accuracy.
[What Is Document Redaction?](https://capytoolkit.com/tools/security/ocr-redactor/reference/#what-is-document-redaction): Document redaction permanently removes sensitive information from a document. Learn the types of redaction, why visual-only redaction fails, and proper techniques.
[What Is Tesseract OCR?](https://capytoolkit.com/tools/security/ocr-redactor/reference/#what-is-tesseract-ocr): Tesseract is the most widely used open-source OCR engine. Learn about its LSTM architecture, WebAssembly build, language support, and accuracy characteristics.
[OCR Accuracy and DPI: The Resolution Standard for Document Scanning](https://capytoolkit.com/tools/security/ocr-redactor/reference/#ocr-accuracy-dpi): 300 DPI is the standard minimum for printed text OCR. Learn how resolution affects accuracy, when higher DPI helps, and when it does not.
[PDF Redaction vs Deletion: Why Visual-Only Redaction Fails](https://capytoolkit.com/tools/security/ocr-redactor/reference/#pdf-redaction-vs-deletion): Visual PDF redaction leaves searchable text underneath. Learn why it fails, how proper structural redaction works, and the difference between redaction and deletion.