| What it does | Digital PDF signatures for macOS
| Connect AI assistants to PDF tools for automated document workflows
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| Stage | Not given
| Startup
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| Founded | Not given
| 2024
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| Based in | Not given
| US
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| Pricing model | Freemium
| Free
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| Pricing | Create your first 5 signatures free, then unlock unlimited signing with a one-time purchase
| Not given
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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
| - PDF editing via AI prompts
- Works with Claude and Claude Code
- Works with ChatGPT
- Data extraction from PDFs
- File encryption and security
- Document generation from templates
- Batch file operations
- Document comparison
- Multi-language translation
- No coding required
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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
| - Free to use with existing pdf.net account
- Works without leaving the chat
- Supports multiple AI assistants
- Files stay encrypted in user account
- Takes under a minute to set up
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 37 ● no change since last check | 62 ● no change since last check |
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| Trust Flow (Majestic) | 7 | 12 |
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| Citation Flow (Majestic) | 16 | 37 |
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| Referring domains (Majestic) | 5 | 392 |
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