Syslog PRI Decoder
Split syslog PRI values into their facility and severity, and compute the PRI for a chosen pair — entirely in your browser.
This tool handles input and primary processing in your browser and is designed not to send the input to QuickKit’s server.
Avoid live production secrets; use dummy or masked data where possible. Data handling details
Summary
Decoded values
How it works
Paste PRI values, one per line, written as <134>, as a bare 134, or as a whole line that begins with <134>. Each value is split with the RFC 5424 rule PRI = facility * 8 + severity, so 134 is facility 16 (local0) and severity 6 (info). Values outside 0-191 are reported as out of range rather than wrapped, and a line with no PRI is reported as such rather than guessed at. The composer runs the same arithmetic in reverse. Facilities 13, 14, and 15 are named by RFC 5424 but have no portable syslog.conf keyword, so no keyword is shown for them. Input is capped at 100,000 characters and 1,000 lines. Everything runs locally; nothing is uploaded, stored, or written into the URL.