| What it does | Markdown to PDF converter with live preview and AI writing tools
| Digital PDF signatures for macOS
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| Stage | Startup
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Free tier with core editor and basic AI limits; Promo plan at $0/month with 2x daily AI usage for registered users; Premium at $2.99/month with 20x daily AI usage and priority support.
| Create your first 5 signatures free, then unlock unlimited signing with a one-time purchase
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| Key features | - Markdown to PDF export with live preview
- Mermaid diagram rendering
- LaTeX math rendering
- HTML and Markdown export
- AI text humanizer and detector
- Text rewrite with tone controls
- GitHub-Flavored Markdown support
- Grammar and document polish tools
- File import and PDF download
| - 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
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| What makes it different | - All-in-one workspace eliminating tool fragmentation between editor, converter, and AI tools
- Live preview while editing with Mermaid and LaTeX support
- Free tier with no paywall for core Markdown-to-PDF conversion
- Built-in AI tools for text humanization and tone adjustment in one editor
- No registration required to start converting Markdown to PDF
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ● no change since last check | 37 ● no change since last check |
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| Trust Flow (Majestic) | 4 | 7 |
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| Citation Flow (Majestic) | 23 | 16 |
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| Referring domains (Majestic) | 35 | 5 |
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