YAML Formatter

YAML formatting is the process of applying consistent indentation and spacing to YAML data so it is easy to read and maintain. This tool lets you choose between 2-space, 4-space, or 8-space indentation.

The formatter parses your YAML input and reports any syntax errors it finds, including the line number where the problem occurs. If the YAML is valid, it outputs a cleanly indented version.

This tool focuses on formatting YAML. It parses YAML into a structured representation and then serializes it back with your chosen indentation. For JSON conversion, check out our JSON Formatter tool.

Yes! All processing happens entirely in your browser. Your YAML data is never sent to any server. No data is collected, stored, or transmitted.

This formatter supports standard YAML features including nested objects, arrays, multi-line strings, comments (which are removed during formatting), and all scalar types like strings, numbers, booleans, and null.