Opening KEYSTORE Files

The KEYSTORE file type is primarily associated with keytool.

KEYSTORE	File extension: KEYSTORE
	File type:	keystore file

What is a KEYSTORE file?

KEYSTORE files mostly belong to keytool. A KEYSTORE file is a container for cryptographic keys and security certificates used mainly in Java environments. It is managed by the keytool utility from the Java Development Kit (JDK).
Key functions include:

Storing private and public keys

Holding certificate chains

Encrypting key and certificate data

Sometimes storing JSON formatted blockchain keys (e.g. Ethereum wallets)

The file is encrypted and requires a password to access its contents. To view or manage it, use keytool commands or similar cryptographic libraries. For detailed command options, see the official keytool documentation.
In some cases, applications like Elasticsearch also use keystore files for secure password storage (Elasticsearch).
FilExt.com tip: Be cautious when editing a KEYSTORE file, as it is a core part of application security.

How do you open KEYSTORE files?

You need a suitable software like keytool to open a KEYSTORE 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 KEYSTORE file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a KEYSTORE file directly in the browser:. Just drag the file onto this browser window and drop it.

Online KEYSTORE Text Viewer

Choose your .keystore file to analyze

or drag and drop it here

Online File Viewer

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KEYSTORE file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. So you need a detailed analysis of a file to find out the format and the associated program. Below you will find our evaluation of the KEYSTORE files:

Files with the KEYSTORE extension are quite widely used. This file type is mainly used by one program with a specific format. The two most popular formats are as follows:

• 70% of all KEYSTORE files are Java KeyStore files. These files are binary files, so they do not contain text, but only cryptic characters. The average file size is 2 KB with most files being between 1 KB and 2 KB in size. The file type was developed only in the last few years. debug.keystore or Keystore. is a typical file name. Files like these have the following tags: android, release, user, store, server, signing, client, upload and games.
• 15% of all KEYSTORE files save the data in certificate file format. A digital certificate is a unique, digitally signed document which authoritatively identifies the identity of an individual or organization. Using public key cryptography, its authenticity can be verified to ensure that the software or website you are using is legitimate. The contents of these files cannot be read by a human; only a computer program can interpret the data. The files are often between 2.4 KB and 2.8 KB in size. A common filename is debug.keystore or my-upload-key.keystore.

All other KEYSTORE files (15%) have different formats, frequently e.g. JSON. Tagged as tomcat or https. If you want to find out what your KEYSTORE file contains, drag and drop it onto this page.