Extract text from PKCS #12 certificates (P12)
To convert P12 certificates to another format, you need OpenSSL or other Encoded software.
To convert other file formats to the "Digital Certificate Keystore" file type, you need software like OpenSSL or a similar tool.
The .P12 file is a PKCS #12 cryptographic archive used to securely bundle a server's private key and its corresponding public X.509 certificates into a single file. Originally developed by RSA Laboratories, this binary format is heavily utilized by web servers, VPN clients, and secure email protocols to authenticate identity and establish encrypted connections. You can natively manage these files using OS-level certificate managers like the Windows Certificate Import Wizard or macOS Keychain Access, as well as command-line utilities like OpenSSL.
The main disadvantage of the .P12 format is its rigid, binary structure, which almost always requires a password to access. Furthermore, many modern web server environments, such as Apache, Nginx, and various cloud load balancers, do not accept bundled .P12 files directly. They require the underlying private key and public certificate to be separated into distinct, Base64-encoded text files.
To use your certificate in these environments, you must convert the .P12 file to PEM, CER, or CRT formats. Converting to a PEM file extracts both the key and the certificate chain into a readable format. Note that extracting the private key from a .P12 archive will expose it in plain text unless you apply secondary encryption to the resulting file.
This file format is notoriously difficult to convert because it is a highly secure, encrypted container. Standard online converters fail because they cannot bypass password protections or correctly parse the underlying ASN.1 syntax. Often, only the original cryptographic software can properly decrypt and export the data. While we cannot extract a private key from a password-protected .P12 file without the passphrase, our engine can inspect the file's structure, verify its schema, and attempt to extract the unprotected public certificate portions for you.
Convert.Guru analyzes your P12 file, detects the exact format, and lets you read the text inside.
Users also converted PFX, PDF, JPG, MOBILEPROVISION, JPEG, PKCS12, PNG, CER, KEYSTORE, PEM, 12, CRT and KSIGN files.
If you want to convert P12 file to PEM, PFX, JKS, CRT, CER, HTML, HTM, CSS, JS, PHP, ASP or ASPX, you can use OpenSSL or similar software from the "Cryptographic Key Storage" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to P12, try OpenSSL or another comparable tool in the "Cryptographic Key Storage" 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 P12 converter.