I have come across this issue too. I tried to figure it out by install jsFormat as follows:

1. Open Package Controll panel command+shift+p (mac), install package.
2. Install jsFormat.

3. Edit the shortcut for the jsformat:

4. Choose Key-Binding user, then edit

   [
     {
       "keys": [
         "command+l"
       ],
       "command": "reindent"
     },
     {
       "keys": [
         "ctrl+shift+s"
       ],
       "command": "auto_save"
     }, 
     {
       "keys": [
         "ctrl+alt+f"
       ],
       "command": "js_format"
     }
   ]
   

5. So next time when you try to format json code, just use ctrl+alt+f.

That's all.

Hope this will help you.

Cheers

Install this packages via CMD + SHIFT + P > Install package > Search for Pretty JSON and install.

And then turn ugly json via CMD + CTRL + J (OSX) CTRL + ALT + J (Windows/Linux) in pretty JSON!

Source is on GitHub. Credit

For sublime 4 below work for me on MAC OS:

Install "Pretty JSON" sublime 4 by refer below:

• Use key combination Cmd + Shift + p and type Install Package
• Select Package Control: Install Package from the search results
• Type Pretty JSON and select it from the search results

OR use "Manual Installation" steps of below link

now for shortcut :

Click on Sublime -> Preferences -> Key Bindings

Here add the below json part inside existing json and save the file

{ "keys": [ "ctrl+shift+j" ], "command": "pretty_json" }

you can use cmd too instead of ctrl, set says as per your preference

Complete json will look like below:

[{
    "keys": [
      "command+l"
    ],
    "command": "reindent"
  },
  {
    "keys": [
      "ctrl+shift+s"
    ],
    "command": "auto_save"
  },
  {
    "keys": [
      "ctrl+shift+k"
    ],
    "command": "js_format"
  },
  {
    "keys": [
      "ctrl+shift+j"
    ],
    "command": "pretty_json"
  }
]

Now use below short key anytime to beautify json on sublime

ctrl+shift+j

You can also use command instead of ctrl

For Mac OS follow the steps:

Install Pretty JSON

1. Use key combination Cmd + Shift + p and type Install Package
2. Select Package Control: Install Package from the search results
3. Type Pretty JSON and select it from the search results

Add Key Binding

1. Open key bindings from Sublime Text > Preferences > Key Bindings

2. Add following key short cut in key bindings

   { "keys": [ "command+shift+j" ], "command": "pretty_json" }

Use Pretty JSON

1. Select JSON text and use key combination Cmd + Shift + j

You can use Command Palette to format a text

//Call Command Palette
Ctrl+Shift+P

//Format code instead of  CMD + CTRL + J (OSX)
pretty format

I am using Linux OS. I found the solution first installing the package controller then Pretty JSON package.

1. Install the package controller for sublime here

2. Install Pretty JSON packages via CMD + SHIFT + P > Install package > Search for Pretty JSON and install. Details are here.

If you looking for how to install:(It may helpful someone who try to install as I was)

First enable package installer:

ctrl+shift+p
type “install package control” hit enter

It will place “Package Control. sublime-package” into ~/Library/Application Support/Sublime Text 3/Installed Packages.

Once it has done it will ask you too enter the package name, In that input box please type

pretty json and hit enter

Finally , you can format json by using ctrl+shift+p

Open the Command Palette: Press Ctrl+Shift+P (Windows) or Cmd+Shift+P (OS X). Type 'install' in the Command Palette input box, which should autocomplete to 'Install Package Control'.

Then go to Sublime Text -> Preferences -> Package Control -> Type Package Control: Install Package in the pop up box which would open a separate pop up box and in that type the package you want to install in this case "Pretty JSON"

Turn ugly json to pretty JSON via CMD + CTRL + J (OS X)

Since version 4 it is available under the Selection -> Format -> JSON menu option.