ENCGUESS(1perl) Perl Programmers Reference Guide ENCGUESS(1perl)

encguess - guess character encodings of files

$Id: encguess,v 0.3 2020/12/02 01:28:17 dankogai Exp $

encguess [switches] filename...


show this message and exit.
specify a list of "suspect encoding types" to test, separated by either ":" or ","
output a list of all acceptable encoding types that can be used with the -s param
suppress display of unidentified types


  • Guess encoding of a file named "test.txt", using only the default suspect types.
    encguess test.txt
  • Guess the encoding type of a file named "test.txt", using the suspect types "euc-jp,shiftjis,7bit-jis".
    encguess -s euc-jp,shiftjis,7bit-jis test.txt
    encguess -s euc-jp:shiftjis:7bit-jis test.txt
  • Guess the encoding type of several files, do not display results for unidentified files.
    encguess -us euc-jp,shiftjis,7bit-jis test*.txt

The encoding identification is done by checking one encoding type at a time until all but the right type are eliminated. The set of encoding types to try is defined by the -s parameter and defaults to ascii, utf8 and UTF-16/32 with BOM. This can be overridden by passing one or more encoding types via the -s parameter. If you need to pass in multiple suspect encoding types, use a quoted string with the a space separating each value.

Encode::Guess, Encode::Detect

Copyright 2015 Michael LaGrasta and Dan Kogai.

This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:


2022-05-29 perl v5.36.0