Works with Your Favorite Office Apps
One add-in, three powerful applications. Same detection engine, consistent results.
Microsoft Word
Anonymize contracts, legal documents, reports, and any text-heavy documents with full formatting preservation.
Microsoft Excel
Process entire spreadsheets, selected cells, or individual sheets. Perfect for HR data, financial reports, and customer lists.
Microsoft PowerPoint
Anonymize presentations slide-by-slide or all at once. Great for client presentations and training materials.
Add-in Features
PII Detection
- Real-time PII highlighting as you type
- Supports 320+ entity types (names, emails, IDs, tax numbers, etc.)
- Multi-language detection (48 languages)
- Custom entity recognition for your specific needs
Anonymization Options
- One-click anonymization of selected text or entire document
- 7 anonymization methods: Replace, Redact, Mask, Hash, Encrypt, Asymmetric Encrypt, Keep
- Consistent replacements across the document
- Undo/redo support for all anonymization operations
Word Features
- Full document or selection processing
- Format preservation (fonts, styles, colors)
- Comments and track changes intact
- Table structure maintained
Excel Features
- Process selected cells, active sheet, or entire workbook
- Hidden rows and columns detected
- Number and boolean type preservation
- Multi-sheet batch processing
PowerPoint Features
- Process selected shapes or all slides
- Text box content anonymization
- Slide-by-slide or presentation-wide
- Speaker notes included
Key Benefits
Work In-Place
No copy-paste needed. Anonymize directly in Word, Excel, or PowerPoint without switching apps.
Preserve Formatting
All formatting, styles, fonts, and document structure remain intact after anonymization.
Secure Processing
Your documents never leave your control. Processing happens securely via our encrypted API.
Zero-Knowledge Login
Your password never leaves your device. Our Zero-Knowledge authentication keeps you protected.
Easy Installation
- 1
Open Word, Excel, or PowerPoint and go to Insert > Get Add-ins
- 2
Search for cloak.business
- 3
Click Add and sign in with your account
- 4
Start anonymizing documents, spreadsheets, and presentations
System Requirements
Compatible with all modern versions of Microsoft Office.
Supported Applications
- Microsoft Word 2016 or newer (Windows/Mac)
- Microsoft Excel 2016 or newer (Windows/Mac)
- Microsoft PowerPoint 2016 or newer (Windows/Mac)
- Office for the web (Word, Excel, PowerPoint Online)
- Office for iPad/iPhone
What You Need
- cloak.business account (free or paid)
- Internet connection for API access
- Microsoft 365 subscription or standalone Office license
Is This Right for You?
Best For
- ✦Word, Excel, and PowerPoint PII removal before sharing with external parties
- ✦Compliance review workflows where documents must be redacted in-place
- ✦Teams using Microsoft Copilot who need to anonymize prompts in Office documents
- ✦Legal and finance professionals working in Word and Excel daily
- ✦Organizations requiring reversible encryption to restore original data after review
Not Ideal For
- ✦Non-Office apps — LibreOffice and Google Docs are not supported
- ✦Google Docs users — use the Chrome Extension for browser-based PII scrubbing
- ✦Automated server-side pipelines — use the API or batch processing instead
- ✦Processing standalone PDF files — Word, Excel, and PowerPoint formats only