Golang : Clean formatting/indenting or pretty print JSON result


Your Golang program is producing JSON result in a single line that looks like this :


but you want to make the result human readable/clean formatted/indented or pretty print. How to do that?


Instead of using json.Marshal() function, use json.MarshalIndent() function instead.


 package main

 import (

 func main() {

  str := "apple orange durian pear"

  // turn to slice
  strSlice := strings.Fields(str)

  fmt.Println("Slice : ", strSlice)

  jsonPrettyPrint, _ := json.MarshalIndent(strSlice, "", "  ")

  fmt.Println("nicely indented/formatted JSON : \n", string(jsonPrettyPrint))

  jsonWithOutIndent, _ := json.Marshal(strSlice)

  fmt.Println("non-indented JSON : \n", string(jsonWithOutIndent))



Slice : [apple orange durian pear]

nicely indented/formatted JSON :







non-indented JSON :


By Adam Ng

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