Extract text from CSR files
To convert your CSR file to another format, you need OpenSSL or other System software.
To convert other file formats to the "Public Key Infrastructure (PKI)" file type, you need software like OpenSSL or a similar tool.
The .CSR extension primarily identifies a Certificate Signing Request, a block of encoded text used in Public Key Infrastructure (PKI) to apply for an SSL/TLS certificate. Generated by web server software like OpenSSL or Microsoft IIS, this file contains your public key and identity information (domain, country, organization).
The frustrating part for users is distinguishing the request from the actual certificate. A .CSR file is essentially a digital application form; it cannot be installed on a server to enable HTTPS by itself, nor does it contain the private key. It must be submitted to a Certificate Authority (CA) to generate a valid CRT or CER file. Additionally, system administrators often struggle with format incompatibilities, needing to convert .CSR files from PEM (Base64 ASCII, editable in Notepad++) to DER (binary) for use in Java-based environments or specific appliances.
A secondary, unrelated use of the extension is for Casio Recorded Song files created by older Casio digital pianos (e.g., CTK-496). These are proprietary MIDI-like sequence files. They are completely incompatible with modern audio players like VLC, forcing users to re-record the audio analog-style or use specialized legacy software to attempt conversion to MID.
Convert.Guru analyzes your CSR file, detects the exact format, and lets you read the text inside.
Users also converted PEM, CRT, CRS, CER, CDR, PDF, CSV, KEY, REQ, CR2, XML, TXT and PNG files.
If you want to convert CSR file to PEM, REQ, KEY, DER, CERT, INF, HTML, HTM, CSS, JS, PHP or ASP, you can use OpenSSL or similar software from the "SSL Certificate Request" 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 CSR, try OpenSSL or another comparable tool in the "SSL Certificate Request" 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 CSR converter.