Permanently remove sensitive data from PDFs — not just hide it.
100% offline. No cloud. No data exposure.
PlainBytes Studio · Windows Desktop
Local-first PDF redaction — detect, review, and export on your device.
PlainBytes PDF Redactor is a local-first PDF redaction tool for Windows. It helps you detect, review, and remove sensitive information from PDFs in a practical workflow that stays fully local. Core processing runs on your device; document uploads to our servers are not required for the core features.
Windows · Local-first · Proprietary
PlainBytes PDF Redactor combines AI-assisted detection, rule-based scanning, manual review, and physical redaction export into a focused workflow for sensitive PDFs.
Intended for workflows such as:
- legal review
- finance and accounting
- audit preparation
- internal document handling
- controlled document sharing
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|---|---|
| Audit & detection | Review & document |
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|---|---|
| Document & marks | Workflow / batch |
Black boxes can be removed. The original content remains in the file.
Sensitive data is erased from the PDF structure itself.
- Offline PDF redaction workflow
- AI-assisted detection for names, organizations, locations, and dates
- Rule-based detection for IDs, phone numbers, bank cards, email addresses, postal codes, and regional identifiers
- Physical PDF redaction export
- Metadata cleanup
- Batch processing for similar PDF files
- Review and confirmation workflow before export
- Multilingual interface
- Microsoft Store: https://apps.microsoft.com/detail/9N2VLPN4WDK1
- Open a PDF document
- Run automatic detection
- Review detected items in the audit panel
- Confirm or adjust redaction results
- Export a physically redacted PDF
Core document detection, review, and export workflows are designed to run locally on the user's device.
The product is built around a practical review process instead of a fully automatic black-box approach.
PlainBytes PDF Redactor is a dedicated PDF redaction tool, not a general-purpose PDF office suite.
- English
- 简体中文
- 繁體中文
- 日本語
- 한국어
- Deutsch
- Français
- Русский
- Português
- Italiano
- العربية
- Español
- Nederlands
The built-in rule library includes detection coverage across 20+ regions and 100+ structured detection rules.
- Windows Desktop
PlainBytes PDF Redactor is distributed through:
- Microsoft Store
The installation package may appear relatively large compared to lightweight utility apps.
This is expected.
PlainBytes PDF Redactor includes built-in local AI components, including ONNX model data and related runtime resources required for offline sensitive information detection. These files are packaged with the application so that core detection features can run locally on the device without requiring cloud-based inference.
In short, the larger package size is primarily due to:
- bundled ONNX model files
- local inference resources
- regional rule data
- offline processing dependencies
PlainBytes PDF Redactor does not include a built-in in-app online updater.
This is intentional. The product is designed around a local-first and low-network-dependency workflow, and we avoid introducing an additional in-app update channel that would require direct network access from the application itself.
Updates are currently delivered through Microsoft Store only. Users can check for and install newer versions manually through the Microsoft Store interface.
- .NET 8 WPF — desktop shell and UI
- CommunityToolkit.Mvvm — MVVM patterns
- PdfPig — PDF text / structure (read)
- Pdfium — rendering
- iText7 + PdfSweep — physical redaction (write)
- SkiaSharp — drawing / overlays
- ONNX Runtime — on-device inference
The core document workflow does not require uploading PDFs to external servers. See Privacy Policy for details.
For product support, release information, and related materials, please refer to the official PlainBytes Studio channels.
This software is proprietary. Usage is governed by the End User License Agreement (EULA) presented in the product.
This repository is used for product management, release distribution, and related materials. Source code is not licensed for public use, redistribution, or modification.
Copyright © 2026 PlainBytes Studio. All rights reserved.
Built for users who need to safely share documents without leaking sensitive information.