Opening a CA-BUNDLE File

The CA-BUNDLE file type is primarily associated with OpenSSL.

CA-BUNDLE	File extension: CA-BUNDLE
	File type:	text file

What is a CA-BUNDLE file?

CA-BUNDLE files mostly belong to OpenSSL. CA-BUNDLE files are plain text files that store a certificate authority bundle used for SSL/TLS security. They hold a list of public certificates in PEM format, which means each certificate is enclosed by '-----BEGIN CERTIFICATE-----' and '-----END CERTIFICATE-----' markers.

Format: PEM encoded text file

Primary use: Provide trusted CA certificates to validate secure connections

Software: Commonly used by OpenSSL and cURL

FilExt.com notes: The certificates are arranged in a specific order to create a chain of trust. This chain ensures that a server or client presenting a certificate can be verified against a known authority. For further technical details, visit the OpenSSL official website.

How to open CA-BUNDLE files

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

Online CA-BUNDLE Text Viewer

Choose your .ca-bundle file to view

or drag and drop it here

Online File Viewer

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How to extract texts from CA-BUNDLE files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

You can extract texts from CA-BUNDLE file or capture a preview screenshot using our online CA-BUNDLE file viewer:

To do this, click the button "Choose your .ca-bundle file to view" on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert CA-BUNDLE files:

OpenSSL
See the previous paragraphs to learn more about the main application. CA-BUNDLE files are often referred to as OpenSSL simple text files because this type of file is primarily created or used by this software.
cURL, OpenSSL
A CA-BUNDLE file, short for Certificate Authority Bundle, is a file that contains a collection of trusted root certificates of Certificate Authorities (CAs). These certificates are used to establish trust in the digital certificate chain during Transport Layer Security (TLS)/Secure Sockets Layer (SSL) communications. When a client connects to a server using TLS/SSL, the server presents its digital certificate. The client then uses the trusted root certificates in the CA bundle to verify the server's certificate's authenticity. If the server's certificate is signed by a CA whose root certificate is present in the client's CA bundle, the client trusts the server's certificate, and the secure communication can proceed. If the server's certificate is not signed by a trusted CA, or if the certificate chain is broken, the client may display a warning or refuse to connect. The CA-BUNDLE file format is typically a plain text file containing multiple X.509 certificates in PEM format. Each certificate starts with `-----BEGIN CERTIFICATE-----` and ends with `-----END CERTIFICATE-----`. These files are crucial for secure communication over the internet and are used by various software, including web browsers, email clients, and other applications that rely on TLS/SSL. Maintaining an updated CA-BUNDLE file is essential for ensuring secure connections and preventing man-in-the-middle attacks. This file format is classified as Security.

Technical Data for CA-BUNDLE File Extension

File classification:

Simple text file

Related files:

pem, crt, cer, p7b, pfx, der, ca, bundle, key, exe, zip

a ca-bundle text file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with CA-BUNDLE files

Associate the CA-BUNDLE file extension with the correct application.
Update your software that should actually open text files. Because only the current version supports the latest CA-BUNDLE file format. Search, therefore, e.g. on the manufacturer website after an available OpenSSL update.
To make sure that your CA-BUNDLE file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CA-BUNDLE file online - secure, fast, and no downloads needed.