Sign documents with confidence
The professional PDF reader and signing tool trusted by thousands. Read, annotate, and legally sign documents — all in one powerful desktop app.
One-time purchase · Windows, Mac & Linux · Free updates forever
Features
Everything you need in a PDF tool
No subscriptions. No bloat. Just a powerful, elegant PDF reader and signer that works offline.
Full PDF Reader
Open, read, and navigate any PDF document with blazing speed. Supports bookmarks, thumbnails, and multi-tab viewing.
Digital Signatures
Draw, type, or upload your signature. Place it precisely on any document with legally-binding digital certificates.
Bank-Level Security
256-bit AES encryption keeps your documents safe. Your files never leave your computer — everything runs locally.
Annotations & Markup
Highlight, underline, strikethrough, and add sticky notes. Collaborate on documents with rich annotation tools.
Smart Search
Find any text instantly across multi-hundred page documents. Advanced OCR handles scanned PDFs too.
Cross-Platform
Available for Windows, macOS, and Linux. One license covers all your devices with free lifetime updates.
Pricing
One price. Yours forever.
No monthly fees, no hidden costs. Pay once and own SignPDF for life.
One-time payment
- Full PDF reader & viewer
- Digital signature tools
- Annotations & markup
- Smart search & OCR
- Windows, Mac & Linux
- Free lifetime updates
- Priority email support
- No subscription — ever
30-day money-back guarantee · Secure checkout