How Can I Pretty-Print JSON Data in Go?

Pretty-printing JSON in Go

Formatting JSON to make it easier to read can be a challenge, but Go offers a convenient solution with json.MarshalIndent. This function allows you to prettify the output of json.Marshal or format an existing JSON string.

Using json.MarshalIndent

To prettify JSON using json.MarshalIndent, pass your data, the prefix (empty string for none), and the indent characters as arguments:

data := map[string]int{"data": 1234}
prettyJSON, err := json.MarshalIndent(data, "", "    ")
if err != nil {
    // Error handling
}

// Output:
// {
//     "data": 1234
// }

The indent argument specifies the indentation characters. For instance, json.MarshalIndent(data, "", " ") will pretty-print the JSON with four spaces for indentation.

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