# json_pp - JSON::PP command utility - man(1) - [phpMan]

- Pretty-print JSON data from a file:
  `json_pp < {{file}}`
- Pretty-print JSON data from a file and output to another file:
  `json_pp < {{file}} > {{file}}`
- Pretty-print JSON data and read from a pipeline:
  `cat {{file}} | json_pp`
- Pretty-print JSON data with sorted keys:
  `json_pp -s < {{file}}`
- Minimize JSON data (remove unnecessary whitespace):
  `json_pp -json_opt=canonical,space_before => {{file}}`
- Enable colored output for pretty-printed JSON:
  `json_pp -json_opt=color < {{file}}`

*Source: cheat.sh*

---

[_JSON_PP_(1)](https://www.chedong.com/phpMan.php/man/JSONPP/1/markdown)                        Perl Programmers Reference Guide                        [_JSON_PP_(1)](https://www.chedong.com/phpMan.php/man/JSONPP/1/markdown)

## NAME
       json_pp - [JSON::PP](https://www.chedong.com/phpMan.php/perldoc/JSON%3A%3APP/markdown) command utility

## SYNOPSIS
           json_pp [-v] [-f from_format] [-t to_format] [-json_opt options_to_json1[,options_to_json2[,...]]]

## DESCRIPTION
       json_pp converts between some input and output formats (one of them is JSON).  This program
       was copied from json_xs and modified.

       The default input format is json and the default output format is json with pretty option.

## OPTIONS
### -f
           -f from_format

       Reads a data in the given format from STDIN.

       Format types:

       json
           as JSON

       eval
           as Perl code

### -t
       Writes a data in the given format to STDOUT.

       null
           no action.

       json
           as JSON

       dumper
           as [Data::Dumper](https://www.chedong.com/phpMan.php/perldoc/Data%3A%3ADumper/markdown)

### -json_opt
       options to [JSON::PP](https://www.chedong.com/phpMan.php/perldoc/JSON%3A%3APP/markdown)

       Acceptable options are:

           ascii latin1 utf8 pretty indent space_before space_after relaxed canonical allow_nonref
           allow_singlequote allow_barekey allow_bignum loose escape_slash indent_length

       Multiple options must be separated by commas:

           Right: -json_opt pretty,canonical

           Wrong: -json_opt pretty -json_opt canonical

### -v
       Verbose option, but currently no action in fact.

### -V
       Prints version and exits.

## EXAMPLES
           $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
              json_pp -f json -t dumper -json_opt pretty,utf8,allow_bignum

           $VAR1 = {
                     'bar' => bless( {
                                       'value' => [
                                                    '0000000',
                                                    '0000000',
                                                    '5678900',
                                                    '1234'
                                                  ],
                                       'sign' => '+'
                                     }, '[Math::BigInt](https://www.chedong.com/phpMan.php/perldoc/Math%3A%3ABigInt/markdown)' ),
                     'foo' => "\x{3042}\x{3044}"
                   };

           $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
              json_pp -f json -t dumper -json_opt pretty

           $VAR1 = {
                     'bar' => '1234567890000000000000000',
                     'foo' => "\x{e3}\x{81}\x{82}\x{e3}\x{81}\x{84}"
                   };

## SEE ALSO
       [JSON::PP](https://www.chedong.com/phpMan.php/perldoc/JSON%3A%3APP/markdown), json_xs

## AUTHOR
       Makamaka Hannyaharamitu, <makamaka[at]cpan.org>

## COPYRIGHT AND LICENSE
       Copyright 2010 by Makamaka Hannyaharamitu

       This  library is free software; you can redistribute it and/or modify it under the same terms
       as Perl itself.

perl v5.38.2                                 2026-08-18                                   [_JSON_PP_(1)](https://www.chedong.com/phpMan.php/man/JSONPP/1/markdown)