2-Space vs 4-Space Indentation — Which Should You Use?
Compare 2-space and 4-space indentation styles for code. Understand the trade-offs and which communities prefer each.
| Feature | 2-Space Indent | 4-Space Indent |
|---|---|---|
| Visual clarity | Good | Better (wider gaps) |
| Horizontal space | More compact | Wider (more scrolling) |
| JavaScript/TypeScript | Standard (Prettier default) | Less common |
| Python | Non-standard | Required (PEP 8) |
| YAML/HTML/JSX | Preferred (less nesting width) | Workable but wider |
Verdict
Follow the convention of your language and team. JavaScript and TypeScript projects typically use 2 spaces. Python requires 4 spaces. For new projects, configure your formatter (Prettier, Black, etc.) once and let it handle indentation automatically. Consistency matters far more than the number of spaces.
The End of the Debate: Use a Formatter
Modern formatters like Prettier (JavaScript), Black (Python), and gofmt (Go) have largely ended the indentation debate by enforcing a single style automatically. Configure the tool once, add it to your CI pipeline, and never argue about indentation again. The best indentation style is the one your formatter enforces consistently.
Frequently Asked Questions
Tabs allow each developer to set their preferred visual width. Go and some C projects use tabs. Most other languages have settled on spaces. The key is to pick one and use a formatter to enforce it.
No. Indentation is whitespace and has zero impact on runtime performance. Minification strips whitespace for production JavaScript, so the source indentation style does not affect bundle size.
You should not. Mixed indentation causes messy diffs, merge conflicts, and readability issues. Configure a formatter like Prettier or EditorConfig to enforce a single style project-wide.