# PAdES Studio

> PAdES Studio is a macOS app for signing and verifying PDF documents with digital certificates stored in Keychain.

PAdES Studio is a macOS app for signing and verifying PDF documents with digital certificates stored in Keychain.

## Facts
- Website: https://pades.cloudmakers.eu
- Pricing: freemium
- Categories: Mobile Apps
- LotsDirectory page: https://lots.directory/products/pades-studio
- Listing state: Unclaimed. We listed this product from its public website, and its owner has not claimed it yet.

## Detailed info

## What is PAdES Studio?

PAdES Studio is a native macOS application for digitally signing and verifying PDF documents with certificates stored in Keychain.

## What PAdES Studio does

The app generates cryptographic PDF signatures using certificates from macOS Keychain or smart cards without cloud uploads, supports PAdES profiles from baseline to archival, embeds RFC 3161 timestamps, and inspects certificate chains.

## Who PAdES Studio is for

Mac users, legal professionals, and compliance teams requiring standards-compliant digital PDF signatures without an Adobe subscription.

## How PAdES Studio works

Users open a PDF, choose an optional area for a visible signature, select an identity from Keychain along with PAdES profile and timestamp settings, and sign the document on their Mac.

## Key features

- Signs PDFs using cryptographic certificates from macOS Keychain or CryptoTokenKit smart cards.
- Supports standard profiles including PAdES-B-B, PAdES-B-T, PAdES-B-LT, and PAdES-B-LTA.
- Writes incremental PDF updates so original document bytes and prior signatures remain intact.
- Embeds RFC 3161 timestamps and Document Security Store validation data for long-term validation.
- Processes documents locally on your Mac with no uploads to developer-operated servers.
- Inspects signatures, certificate chains, timestamps, and validation status for any signed PDF.
- Supports macOS 13.0 or later.

## Facts from cloudmakers.eu, checked 8 November 2026

- Requires macOS 13.0 or later.
- Uses certificates and private keys from macOS Keychain or CryptoTokenKit tokens.
- Supports PAdES-B-B, PAdES-B-T, PAdES-B-LT, and PAdES-B-LTA profiles.
- Writes signatures as incremental PDF updates preserving original document bytes.

Written from PAdES Studio's own website ([Homepage](https://pades.cloudmakers.eu/)). The maker can claim this listing to edit it.

## FAQ

### Can I sign documents using a smart card or hardware token?
Yes. PAdES Studio supports signing with smart cards and hardware tokens that expose certificates through macOS Keychain and CryptoTokenKit.

### Does PAdES Studio require an internet connection?
Basic signing and local verification work offline, with internet access required only for RFC 3161 timestamping or retrieving OCSP and CRL revocation data.

### Can PAdES Studio verify signatures created by other software?
Yes. The Verify feature inspects signatures, certificate chains, and PAdES profiles created by other standards-based PDF signing tools.

### What operating system is required?
PAdES Studio supports macOS 13.0 or later.

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Source: https://lots.directory/products/pades-studio · Machine-readable context by LotsDirectory.