| What it does | Digital PDF signatures for macOS
| Free browser tools for CAD files, PDFs, photos and calculators that run entirely on your device
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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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
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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
| - DWG and DXF viewer for AutoCAD drawings with layer toggling and distance measurement
- DGN file viewer for MicroStation V7 and V8 with level toggling and export to PNG, PDF or DXF
- STAAD.Pro model viewer showing 3D structure with members, sections, supports and load cases
- GraphPad Prism file viewer for .prism and .pzfx projects with data and result tables
- PDF compression with target sizes of 100 KB, 200 KB, 500 KB or 1 MB
- PDF merge, split and unlock tools for manipulating PDF files
- Photo resizing to specific file sizes in KB for exam forms and portals
- Financial calculators for EMI, FD, SIP and income tax
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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
| - All tools run entirely in your browser with no server uploads, using WebAssembly for fast processing
- Completely free with no sign-up, no watermark and no paid upgrades
- Viewers for expensive professional software like AutoCAD, MicroStation, STAAD.Pro and GraphPad Prism
- No accounts required and no files stored on servers, ensuring complete privacy
- Support for many specialized formats including CAD, engineering, science and design files
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 37 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 7 | 0 |
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| Citation Flow (Majestic) | 16 | 13 |
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| Referring domains (Majestic) | 5 | 2 |
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