YAJF — Yet Another JSON Formatter

A Visual Studio Code extension that formats .json (and .jsonc) files four different ways, on the whole document or just the current selection.

Formatting modes

Mode	Description
JSON: Pretty	Fully indented — each object property and each array item on its own line.
JSON: Ugly / Minimize	Compact, single line, no whitespace.
JSON: Newline After Each Item	Array items are expanded onto their own lines; objects stay inline.
JSON: Newline After Each Property	Object properties are expanded onto their own lines; arrays stay inline.
JSON: Validate Document	Validate the JSON, document only.

Each mode, except Validate has two variants:

Format Document — reformats the entire file.
Format Selection — reformats only the selected text (must be valid JSON on its own).

Selection commands appear in the right-click menu only when text is selected.

Indentation follows the editor's Insert Spaces / Tab Size settings.

Input:

{"name":"test","tags":["a","b"],"info":{"x":1,"y":2}}

{
    "name": "test",
    "tags": [
        "a",
        "b"
    ],
    "info": {
        "x": 1,
        "y": 2
    }
}

{"name":"test","tags":["a","b"],"info":{"x":1,"y":2}}

{"name":"test","tags":[
    "a",
    "b"
],"info":{"x":1,"y":2}}

{
    "name": "test",
    "tags": ["a","b"],
    "info": {
        "x": 1,
        "y": 2
    }
}

VS Code ^1.85.0.

MIT