SignKit
Privacy-first desktop app that extracts signatures from documents and signs PDFs offline without cloud upload or subscriptions.
Cost / License
- Pay once
- Proprietary
Platforms
- Mac
- Windows
- Linux
SignKit
Features
Properties
- Privacy focused
Features
- Sign PDF files
- Ad-free
- OCR
- Works Offline
- Document Workflow
- Desktop Application
- No Subscription
Tags
- signature-library
- esignature
- signature-extraction
- signature-management
- pdf-tools
- offline-app
- Digital Signature
- local-processing
- pdf-signing
- document-signing
SignKit information
Developed by
Pranay Suyash Licensing
Proprietary and Commercial product.Pricing
One time purchase (perpetual license) that costs from $29.Alternatives
0 alternatives listedSupported Languages
- English
What is SignKit?
SignKit is a privacy-first desktop application designed for professionals, freelancers, and small businesses who need to extract signatures from documents and sign PDFs without compromising their privacy or paying recurring subscription fees.
What Makes SignKit Different
Unlike cloud-based e-signature platforms like DocuSign or Adobe Sign, SignKit runs entirely on your computer. Your documents and signatures never leave your device, making it ideal for handling sensitive contracts, legal documents, and confidential agreements. There's no monthly subscription—just a one-time $29 purchase that you own forever.
Core Features
SignKit's signature extraction capability is unique in the market. Upload any image or scanned document containing a signature, use the intuitive selection tool to isolate the signature region, adjust the threshold and color settings, and export a clean, transparent PNG ready to use anywhere. The app includes advanced image processing controls including zoom, pan, rotation, and morphological operations to ensure perfect extraction every time.
The integrated PDF signing workflow lets you open any PDF document, select signatures from your library, place them precisely where needed with drag-and-drop positioning and resizing, and save the signed PDF—all without uploading to the cloud. The app maintains a comprehensive audit log of all PDF operations for compliance and record-keeping.
Privacy & Security
SignKit is built with privacy as the foundation. All image processing happens locally using OpenCV and PIL. Your files are never uploaded to external servers. The app works completely offline after installation, requiring no internet connection for core functionality. This makes it GDPR and HIPAA friendly, perfect for regulated industries.
Technical Excellence
Built with Python and PySide6 (Qt), SignKit delivers a native desktop experience on macOS, Windows, and Linux. The hybrid architecture includes an optional local FastAPI backend for advanced features, but degrades gracefully if unavailable. The app includes multi-layer security validation, secure file handling, and automatic cleanup of temporary files.
Pricing & Availability
SignKit costs $29 as a one-time purchase with no recurring fees. The trial version includes full functionality except export and save operations, allowing you to test thoroughly before buying. Available for macOS (Intel and Apple Silicon), Windows 10/11, and Linux (Ubuntu, Fedora).
Perfect For
- Freelancers and consultants who sign contracts regularly
- Small businesses handling NDAs and agreements
- Legal professionals requiring document confidentiality
- Privacy-conscious individuals and organizations
- Anyone tired of subscription fees for basic PDF signing
SignKit represents a new category: privacy-first document tools that respect your data, your budget, and your workflow.