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Fast Color JSON Marshaller + Pretty Printer for Golang
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ColorJSON: The Fast Color JSON Marshaller for Go

ColorJSON Output What is this?

This package is based heavily on hokaccha/go-prettyjson but has some noticible differences:

  • Over twice as fast (recursive descent serialization uses buffer instead of string concatenation)
    BenchmarkColorJSONMarshall-4     500000      2498 ns/op
    BenchmarkPrettyJSON-4            200000      6145 ns/op
  • more customizable (ability to have zero indent, print raw json strings, etc...)
  • better defaults (less bold colors)

ColorJSON was built in order to produce fast beautiful colorized JSON output for Saw.


go get -u



import ""

str := `{
  "str": "foo",
  "num": 100,
  "bool": false,
  "null": null,
  "array": ["foo", "bar", "baz"],
  "obj": { "a": 1, "b": 2 }

// Create an intersting JSON object to marshal in a pretty format
var obj map[string]interface{}
json.Unmarshal([]byte(str), &obj)

Vanilla Usage

s, _ := colorjson.Marshal(obj)

Customization (Custom Indent)

f := colorjson.NewFormatter()
f.Indent = 2

s, _ := f.Marshal(v)
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