from json

--- title: from json categories: | formats version: 0.104.0 formats: | Convert from json to structured data. usage: | Convert from json to structured data. editLink: false contributors: false ---  # `from json` for [formats](/commands/categories/formats.md) <div class='command-title'>Convert from json to structured data.</div> ## Signature ```> from json {flags} ``` ## Flags - `--objects, -o`: treat each line as a separate value - `--strict, -s`: follow the json specification exactly ## Input/output types: | input | output | | ------ | ------ | | string | any | ## Examples Converts json formatted string to table ```nu > '{ "a": 1 }' | from json ╭───┬───╮ │ a │ 1 │ ╰───┴───╯ ``` Converts json formatted string to table ```nu > '{ "a": 1, "b": [1, 2] }' | from json ╭───┬───────────╮ │ a │ 1 │ │ │ ╭───┬───╮ │ │ b │ │ 0 │ 1 │ │ │ │ │ 1 │ 2 │ │ │ │ ╰───┴───╯ │ ╰───┴───────────╯ ``` Parse json strictly which will error on comments and trailing commas ```nu > '{ "a": 1, "b": 2 }' | from json -s ╭───┬───╮ │ a │ 1 │ │ b │ 2 │ ╰───┴───╯ ``` Parse a stream of line-delimited JSON values ```nu > '{ "a": 1 } { "b": 2 }' | from json --objects ╭───┬────┬────╮ │ # │ a │ b │ ├───┼────┼────┤ │ 0 │ 1 │ ❎ │ │ 1 │ ❎ │ 2 │ ╰───┴────┴────╯ ```

The `from json` command in Nushell is used to convert JSON formatted strings into structured data that can be manipulated within Nushell. It is particularly useful for working with APIs or configuration files that use JSON as their primary data format. The command can parse a single JSON string, or, when used with the `--objects` or `-o` flag, it can process a stream of line-delimited JSON values, treating each line as a separate JSON object. When parsing, the command can also be configured to operate in strict mode, enabled by the `--strict` or `-s` flag. In strict mode, the parser will adhere strictly to the JSON specification, which means it will throw errors if it encounters comments or trailing commas, which are often tolerated in less strict JSON parsing environments. This command enables robust and reliable data transformation from JSON into Nushell's data structures.