Opening KDBX Files

The KDBX file type is primarily associated with KeePass.

KDBX	File extension: KDBX
	File type:	password database file

What is a KDBX file?

KDBX files mostly belong to KeePass by Dominik Reichl. KDBX file format is associated with the KeePass software developed by Bruce Schneier.

• Main Use: KeePass is a free password managing application that ensures multiple usernames and associated passwords for Windows, email accounts, websites are securely saved in one database. The database file is given the KDBX extension. The KDB in KDBX file stands for KeePass DataBase. The KDBX database is encrypted using the Twofish algorithm that supports the AES (Advanced Encryption Standard). Apart from the passwords, the usernames and other notes in the KDBX files are encrypted as well. The contents of the KDBX database can only be decrypted with the help of the master key whose components are hashed using the SHA-256 hash function.
• Additional Information: The initial release of the KeePass software using KDB file extension to store the password details instead of the KDBX file extension. The KDBX file format was introduced from KeePass 2 onwards. The latest version of the KeePass software, KeePass 2.47 can be also installed on Linux and macOS platforms besides the originally supported Windows environment.

How can I open a KDBX file?

You need a suitable software like KeePass from Dominik Reichl to open a KDBX file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your KDBX file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a KDBX file directly in the browser:. Just drag the file onto this browser window and drop it.

Online KDBX Text Viewer

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KDBX file format:

Every file has a defined file format, i.e. how the data is arranged in the file. The file format can be determined based on the file extension and the signature (the first few characters of a file). If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. So you need a detailed analysis of a file to find out the format and the associated program. Our evaluation of the KDBX files looks like this:

The KDBX file extension is quite widespread and mainly uses a special format. The file formats most commonly found in KDBX files are:

• 97% of all KDBX files belong to KeePass Password Safe database. These files contain neither text nor words, but only data. KDBX files can be up to 83 MB in size, but are often around 1 KB - 22 KB. The file type was developed only in the last few years. The file name incident-support.kdbx or Database.kdbx is typical for these files. Files like these are sometimes connected to support, incident, passwords, keepass, pass, credentials, vault and seed.
• 1% of all KDBX files use the same file format, which can be identified by the letters "A9mimmf7S7U" at the beginning. The content consists of readable text data, which can be read using a text editor. The average file size is 2 KB with most files being between 2.1 KB and 2.1 KB in size. The files contain the following words: A9mimmf7S7UAAAMAAhAAMcHy5r9xQ1C+WAUhavxa/wMEAAEAAAAEIAAgTIbunS6J.

The remaining 2% of all KDBX files are files with no common format. Files like these are sometimes linked to password, keys, pwdb, datenbank, manager or rter. If you want to find out what your KDBX file contains, drag and drop it onto this page.