LocalSeal: Secure PDF Signer
Certificate PDF signing
Only for Mac
$9.99
Mac
Sign PDFs on your Mac with local Keychain certificates, reusable signature appearances, password protection, and private files that stay offline.
LocalSeal PDF is a native Mac PDF signer built for secure, local document workflows.
Open a PDF, choose a certificate/private-key identity from macOS Keychain, place a visible signature on the page, and save a new signed PDF copy. Your original document stays unchanged, and your PDFs, signature images, certificates, and private keys stay on your Mac.
Key features:
- Sign PDF documents with local Keychain certificate identities
- Create certificate-backed PDF digital signatures, not just a pasted image
- Import, draw, or type reusable visual signature appearances
- Place and resize the signature area directly on the PDF
- Add signing reason and location metadata
- Detect existing PDF signatures
- Save a new signed copy while preserving the original file
- Password protect PDF copies with standard PDF encryption
- Remove PDF password protection when you know the password
- Inspect PDF signature details such as ByteRange and CMS contents
- Drag and drop PDFs, view page thumbnails, and zoom with native Mac controls
LocalSeal PDF is designed for contracts, forms, approvals, certificates, records, invoices, and business documents that need a digital signature or secure PDF protection.
Important: a visual signature image is only the appearance shown on the page. The actual PDF digital signature is created with the selected certificate/private-key identity. Signature trust and legal acceptance depend on your certificate, PDF viewer, organization, and local rules.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update makes LocalSeal PDF a more complete local PDF signing and protection tool.
- Added PDF password protection for saving encrypted PDF copies
- Added remove protection for PDFs you can unlock with a password
- Improved certificate-backed PDF signing workflow
- Added support for reusable drawn, typed, and imported signature appearances
- Improved signature placement, reason, and location metadata
- Added detection and display of existing PDF signatures
- Added PDF signature inspection details for ByteRange and CMS contents
- Improved local file handling so originals remain unchanged while signed or protected copies are saved separately
The developer, Felipe Beline Baravieira, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Felipe Beline Baravieira
- Size
- 1.9 MB
- Category
- Productivity
- Compatibility
Requires macOS 26.0 or later.
- Mac
Requires macOS 26.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © fbeline
