Prettify json in powershell 3

Given a standard json string value:

$jsonString = '{ "baz": "quuz", "cow": [ "moo", "cud" ], "foo": "bar" }'

How can I get this to be all pretty with newlines, preferably without brute-force regex?

Simplest method I've found so far is:

$jsonString | ConvertFrom-Json | ConvertTo-Json 

However, that seems kinda silly.

Works for me. Parentheses make sure get-content is done before piping. Default depth of convertto-json is 2, which is often too low.

function pjson ($jsonfile) {
  (get-content $jsonfile) | convertfrom-json | convertto-json -depth 100 | 
    set-content $jsonfile
}

If you really don't want to go down the simplest route, which is to use inbuilt PowerShell functions | ConvertFrom-Json | ConvertTo-Json, here is another method, using JSON.net

# http://james.newtonking.com/projects/json-net.aspx
Add-Type -Path "DRIVE:\path\to\Newtonsoft.Json.dll"

$jsonString = '{ "baz": "quuz", "cow": [ "moo", "cud" ], "foo": "bar" }'
[Newtonsoft.Json.Linq.JObject]::Parse($jsonString).ToString()

I put this in my profile

function PrettyPrintJson {
    param(
        [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
        $json
    )
    $json | ConvertFrom-Json | ConvertTo-Json -Depth 100
}

Which works with pipes, and can be auto-completed, so it's at least somewhat less typing:

cat .\file.json | PrettyPrintJson
curl https://api.twitter.com/1.1/statuses/user_timeline.json | PrettyPrintJson