A Go formatter applies gofmt-style conventions to Go source code — tab indentation, opening braces on the same line (required by Go's grammar), blank lines between function definitions, and proper import grouping. Go enforces a single formatting style across all projects, making gofmt the definitive standard.
Formatted Go will appear here...Example Snippets
How to Use the Go Formatter
Go is unique among major languages in having a single official formatter: gofmt. The Go community considers unformatted code a defect — all Go code in public repositories and production systems should follow gofmt rules. This Go formatter applies those same rules in your browser, no installation required.
Step 1: Paste Your Go Code
Copy your Go source code — functions, structs, interfaces, goroutines — and paste it into the input area. The formatter handles package declarations, imports, function definitions, struct types, interface definitions, control flow, and channel operations.
Step 2: Choose Indentation
gofmt uses tabs by default (strongly recommended for Go). The formatter defaults to tabs to match the official standard. You can switch to 2 or 4 spaces if your project deviates from the standard, though this is uncommon in Go projects.
Step 3: Format or Minify
Click Format Go to apply gofmt-style formatting with syntax highlighting. Click Minify to strip comments and collapse whitespace — useful for size comparisons or compact code reviews.
gofmt Key Rules
The gofmt tool enforces: tabs for indentation (not spaces), opening brace on the same line as the function/if/for (Go's automatic semicolon insertion makes a newline before { a compile error in most cases), blank lines between top-level declarations, single blank line between methods, and proper spacing around operators and in function signatures. Running gofmt before committing is standard practice in the Go ecosystem.
FAQ
Is the Go formatter free?
Yes, completely free with no signup required. Format unlimited Go code in your browser at no cost.
Is my Go code safe?
Yes. All formatting runs locally in your browser using JavaScript. Your code is never sent to any server.
Does this replicate gofmt exactly?
This tool applies the core gofmt rules: tab indentation, opening brace on the same line (Go enforces this at compile time), blank lines between functions, and import grouping. It doesn't require the Go compiler and handles most standard Go code patterns.
Why does Go require the opening brace on the same line?
Go's compiler treats a newline before an opening brace as a syntax error in many contexts due to Go's automatic semicolon insertion rules. The gofmt tool enforces same-line braces as the standard style.
Can I use spaces instead of tabs for Go?
gofmt uses tabs by default and the Go community strongly prefers tabs. The formatter defaults to tabs but you can switch to spaces using the indent dropdown if needed for your project.
Can I minify Go code?
Yes. The Minify button strips comments and collapses whitespace while preserving the structural braces and semicolons needed for valid Go syntax.