Input

Output

What is Go?

Go (Golang) is a statically typed, compiled programming language designed at Google. It is known for its simplicity, fast compilation, built-in concurrency (goroutines), and excellent performance for systems and cloud-native applications.

The Go Formatter normalizes indentation using tabs (as per gofmt convention), fixes block alignment, and removes trailing whitespace.

How to Use

Paste your Go code

Paste raw or messy Go source code into the left editor, or click Upload to load a .go file.

Instant formatting

The formatter automatically normalizes indentation using tabs, aligns block structures, and cleans up whitespace.

Copy or download

Use the Copy button to copy the result, or Download to save it as a main.go file.

Formatting Example

Example: Format a Go function

Unformatted input:

package main
import "fmt"
func greet(name string)string{return fmt.Sprintf("Hello, %s!", name)}
func main(){fmt.Println(greet("World"))}

Formatted output:

package main

import "fmt"

func greet(name string) string {
	return fmt.Sprintf("Hello, %s!", name)
}

func main() {
	fmt.Println(greet("World"))
}

Frequently Asked Questions

Why does Go use tabs instead of spaces?

Go's official formatter gofmt uses tabs for indentation by convention. This is enforced across the Go ecosystem to ensure consistent code style regardless of editor settings. See the Google Go Style Guide for more best practices.

Does this formatter handle Go generics?

The formatter handles brace and parenthesis-based indentation, which covers most Go syntax including generics introduced in Go 1.18. Complex type parameter expressions are preserved as-is. For style guidelines, check out Effective Go.

Can I upload a .go file directly?

Yes — click the Upload button to load any .go file from your computer. The content will be formatted automatically.

Go Formatter