| What it does | Digital PDF signatures for macOS
| AI-powered PDF editor for Windows and Mac with OCR, conversion, and editing capabilities
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| Stage | Not given
| Established
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| Founded | Not given
| 2007
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| Based in | Not given
| HK
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| Pricing model | Freemium
| Freemium
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| Pricing | Create your first 5 signatures free, then unlock unlimited signing with a one-time purchase
| Lifetime License for $64.99 USD. Free version with full feature trial available.
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| Key features | - Keychain signing with support for CryptoTokenKit smart cards
- Visible signature with optional image, signer name, and signing time
- RFC 3161 timestamping and long-term validation (LTV)
- Signature inspection with status, certificate chains, and DSS material review
- Multiple signatures as independent document revisions
- Local document processing without server uploads
- Support for PAdES-B-B, PAdES-B-T, PAdES-B-LT, and PAdES-B-LTA profiles
| - AI-powered OCR with 16+ language support
- PDF editing with text and image manipulation
- Batch conversion to 30+ formats
- Chat with PDF using AI
- Fillable form creation and e-signing
- PDF annotation with 100+ shapes
- Page organization and batch processing
- Screen recording and screenshot tools
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| What makes it different | - Real digital signatures that preserve original PDF bytes, not just image stamps
- Incremental PDF updates preserve existing signatures as independently verifiable
- All document processing stays local without server uploads
- Works with macOS Keychain and supported smart cards without PKCS#11 limitation
- Verification always unlimited while signing has free tier option
| - Self-developed PDFium engine opens 100+ page PDFs in 1 second with no lag or crashes
- Batch process up to 1 million files at once without size limits
- Source-backed AI answers with clickable page references for verification
- Free lifetime upgrades with no subscription required
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 37 ● no change since last check | 73 ● no change since last check |
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| Trust Flow (Majestic) | 7 | 24 |
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| Citation Flow (Majestic) | 16 | 55 |
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| Referring domains (Majestic) | 5 | 4682 |
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