DDOC File Extension

DDOC file extension is created by RIA, also known as DigiDoc Signature File. DDOC has been classified as Encoded Files. The format of this file type has not been determined yet. You can open DDOC files in qDigiDoc program.

DigiDoc Signature File Type

DigiDoc Signature File Type

Extension	.ddoc
Developer	RIA
Popularity	Very Common Common Average Uncommon Rare 5.0 (2 Votes) Thank you for voting!Already voted, thanks!
Mime Type	mime-type/not.available
Default Program	qDigiDoc
Category	Encoded Files
Format	Not Available
Updated	6/1/2025

What is a DDOC File Type?

The DDOC is based on ETSI TS 101,903 called XML Advanced Electronic Signatures. Riigi Infosüsteemi Amet (RIA), which is the System Authority; information d' Estonia. DDOC is one of three digital signature and cryptographic file formats of the DigiDoc family, along with .CDOC and .BDOC files.

Since its initial release, several versions (1.1, 1.2, 1.3) of the DDOC format have been developed. This is necessary to maintain compatibility with other digital signature systems and international standards. The first DigiDoc format was the DDOC format and was replaced by the BDOC format.

The qDigiDoc software can be used to digitally sign documents at apos; help from apos; a d'card; identity of apos; employee or d' mobile identity and can open, save and verify documents with digital signatures. It is free and can be downloaded free of charge from l' help the links below.

Free online DDOC Tools & Apps

We have also the free online .DDOC (DigiDoc Signature File) file extension apps that can allow to view, edit, convert from to DDOC, merge, split and compare the DDOC files without installing anything on your system. Please click on the links to explore the complete list of details for each required feature.

DDOC Files Common Issues

There are few common issues with the DigiDoc Signature File .DDOC File Extensions while opening the .DDOC files on Windows and MacOs, we have solution to those issues such as:

Can't Open DDOC Files?

1. You must have supported software programs installed for DigiDoc Signature File on your system such as qDigiDoc.
2. Associate default Qdigidoc qDigiDoc program for *.ddoc (DigiDoc Signature File) files.
   
   

   Associate DDOC Default Program on Windows

   1. Right-click a *.DDOC (e.g example.ddoc) file and click Open With.
   2. In the Open with dialog box, click Qdigidoc qDigiDoc program Or click Browse to locate the program (*.exe) that you want.
   3. Select check box for Always use this app to open .ddoc files.
   
   

   Associate DDOC Default Program on MacOs

   1. Click *.DDOC (e.g example.ddoc) file and click information -> Open With.
   2. In the programs list, click Qdigidoc qDigiDoc program Or other appropriate program that you want.
   3. Confirm Change for all... and Contine.
   4. A message will appear "This change will be applied to all files with .qDigiDoc extension. By clicking Continue you confirm your selection", click Contine to apply changes.

Related DDOC File Extensions

DDOC default file extension is .DDOC and other similer related extensions are:

All Platform Software Programs for DDOC File Extension

List of all softwares that can open the DDOC files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Open DDOC File on Windows

	Software	License	Developer
	qDigiDoc 000 for Windows	Free	qDigiDoc

Open DDOC File on Mac OS

	Software	License	Developer
	qDigiDoc 000 for MacOs	Free	qDigiDoc

Open DDOC file on Linux

	Software	License	Developer
	qDigiDoc 000 for Linux	Free	qDigiDoc

Open DDOC file on Web

	Software	License	Developer

Open DDOC file on iOS

	Software	License	Developer

Open DDOC file on Android

	Software	License	Developer

About Licensing

1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
3. Free⁺ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

About DDOC - DigiDoc Signature File

Updated 6/1/2025

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