Software for PDF Signatures with the Citizen Card

Software for Signatures According to PDF-AS

Sign PDFs Online

Select one of the following external providers for the creation of PDF signatures according to PDF-AS.

Accessible positioning of PDF signatures
  • Accessible positioning of PDF signatures
  • Support for optional automatic positioning
  • Support for Mobile Phone Signature and various smart cards
  • Position signature blocks via QR codes
  • Free of charge
  • Position signatures anywhere in the document
  • Mobile Phone Signature and various smart cards
  • Manage signature folders online
  • Submit documents for signature via e-mail
  • Find detailed information at:

Verify Online

Verify signatures of electronically signed documents using the external tool listed below.

Please note: The new PDF-based signature format PAdES does not require a Manifest ("M") any more. The Manifest is relevant for PDF signatures according to the PDF-AS format only. When verifying PAdES signatures, the Manifest field is therefore greyed out in the displayed result page (see screenshot below). This will change with the upcoming release of the signature-verification tool, which will omit the Manifest field at all. PDF documents signed according to PAdES are valid.

Starting with the beginning of November 2014, PAdES will be gradually integrated into existing e-government components. This affects mainly PDF signing-software such as PDF-AS, PDF-Over, the Austrian Mobile Phone Signature, as well as the citizen card software (CCS) MOCCA/Online-BKU and a.sign client.

Conversion to the new signature format is another step towards standardization, interoperability, and sustainability of signed documents and significantly facilitates their verification with tools such as Adobe Reader. Furthermore, Austria is well-prepared for the EU Regulation on trust services (eIDAS Regulation), which will be enforced in less than two years.

This service is provided by the Rundfunk & Telekom Regulierungs-GmbH (RTR). By pressing the button "Verify signatures now", you will be redirected to the external RTR website.


PDF-Over for Card and Mobile Phone Signature enables you to electronically sign PDF documents. When using the Mobile Phone Signature, your data to be signed is transmitted to the operator of the Mobile Phone Signatur (i.e. A-Trust). When using a Card, your data to be signed remains on your local system during the entire signature-creation process.

Download of Version 4.3.2 from Jul 21st 2021:
(approx. 25 MB)

Windows Windows Installer
MacOS MacOS DMG Image
Linux Linux JAR file

System requirement: Java version 11.

Author: A-SIT, Terms of licence A-SIT

Software for Adobe Signatures

Online Tool

An online service for the verification of Adobe signatures. This service is provided by the Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR).

a.sign PDF

A commercial stand-alone software for signing PDF documents. It is integrated using a plug-in in Adobe Reader and Adobe Acrobat.

a.sign PDF

System requirements:

  • More information

    There is an additional plug-in for signature verification (already integrated in a.sign PDF). The software can sign PDF/A files (but cannot convert PDF to PDF/A). With the visible signature option, an image can be inserted into the PDF document that strongly resembles the signature block of the PDF-AS standard. This image is not a representation of the actual signature; it is just used as a visual cue:


BDC hot:PDFSign

A commercial plug-in for Adobe Acrobat for creating and verifying signatures. It has integrated document analysis and cleaning functions.

BDC hot:PDFSign

System requirements:

  • Microsoft Windows XP, 2000 or Vista
  • Adobe Acrobat 6.0/7.0/8.0/9.0 (Standard or Professional)
  • Intel Pentium II or equivalent
  • 10 MB free disk space
  • 256 MB RAM memory
  • Card reader

  • More information
    hot:PDFSign provides a mechanism for recognising highly-sensitive documents, and if desired remove critical objects such as JavaScript, notes, alternative text, etc.

trustDesk Professional

Commercial software for signing PDF documents and more. It is a stand-alone program that also installs a plug-in in Adobe for verifying PDF documents.

trustDesk Professional

System requirements:

  • Microsoft Windows XP, 2000 or Vista
  • Adobe Acrobat 6.0/7.0/8.0/9.0 (Standard or Professional)
  • Intel Pentium III or equivalent
  • 128 MB available memory
  • Card reader

  • More information

    This software must be purchased, but comes with a 30 day test version. It offers many functions and plug-ins, for example

    • Detached signatures for all files types
    • Signatures for PDF documents
    • En/Decryption
    • Signature printer