Extract text from DigiDoc and Clicker documents (CDOC)
To convert CDOC documents to another format, you need DigiDoc4 or other Encoded software.
To convert other file formats to the "Encrypted Container" file type, you need software like DigiDoc4 or a similar tool.
The .CDOC format primarily serves as an encrypted digital document container within the Estonian national ID ecosystem. It is an XML-based file that secures sensitive documents using strong public-key cryptography. A smaller percentage of .CDOC files are proprietary word processor documents created by Clicker, an educational literacy software by Crick Software.
Opening these files requires highly specialized software. For Estonian documents, you must use the official DigiDoc4 Client along with an authentic national ID card, a card reader, and your personal PIN. For Clicker files, you need a paid license or subscription to the Clicker ecosystem. This makes the .CDOC format highly restrictive and frustrating for general users. You cannot simply open it on a standard operating system, and it is entirely unsupported by web browsers or mobile devices. Users typically need to convert these files to universally readable formats like PDF or DOCX to share them with external parties.
Converting a .CDOC file is notoriously difficult. If it is an encrypted DigiDoc, the file is intentionally locked; no online tool can bypass the encryption without the recipient's private key. If it is a Clicker document, the format is a closed, proprietary standard designed to lock you into their software suite. Standard online converters fail because they lack the proprietary rendering engines or decryption keys. However, just drag and drop your file to identify the format, view it, and convert it when possible. convert.guru can inspect the file headers, identify whether you are dealing with a Clicker file or a DigiDoc, and show text or internal content if our analysis detects an unencrypted embedded format.
Convert.Guru analyzes your CDOC file, detects the exact format, and lets you read the text inside.
Users also converted ASICE, PDF, DDOC, CLKX and CLL files.
If you want to convert CDOC file to BASE64, HEX, BIN, ENC, CRYPT, AES, DES, RSA, PGP, GPG, ASC or KEY, you can use DigiDoc4 or similar software from the "Encrypted Document Container" category. In the File menu, look for Save As… or Export….
To convert CER, BIN, PEM, DER, KEY, P7S, PFX, ENC, P12, BASE64, P7B or HEX files to CDOC, try DigiDoc4 or another comparable tool in the "Encrypted Document Container" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CDOC converter.