YAML to JSON Converter: Convert YAML to JSON Online | Free Tool

A Paste your YAML content, click Convert, and get the JSON output instantly. The converter handles all standard YAML features.

A Yes, including nested objects, arrays, multi-line strings, comments (ignored in output), anchors, and aliases.

A Yes, any valid YAML file works, including Docker Compose, Kubernetes manifests, CI/CD configs, and more.

A Yes, completely free with no limits. Uses the js-yaml library for reliable parsing.

A Your data security is paramount. This YAML to JSON converter processes all conversions entirely client-side within your browser. None of your YAML configuration data is ever sent to our servers or stored at any point. Once you close the browser tab, your data is gone. This ensures complete privacy for your sensitive information, making it safe to use for any configuration files without concern.

A If your YAML conversion fails, it's highly likely due to invalid YAML syntax. Our converter relies on strict YAML parsing. Carefully check for common issues like incorrect indentation, missing colons, unquoted strings with special characters, or mismatched braces/brackets. Using an online YAML validator can help pinpoint exact errors. Once your YAML is syntactically valid, paste it back into our tool for a successful and accurate JSON output.

A You absolutely can. While there isn't a strict file size limit imposed, very large files, say over 1MB, might take a few extra seconds to process entirely in your browser. For most typical configurations, like those for CI/CD pipelines or application settings, the conversion is nearly instantaneous. If you encounter performance issues with extremely massive files, consider breaking them into smaller, manageable chunks.

A Comments in YAML start with # and the converter strips them out during processing. Your JSON output won't include those comments since JSON doesn't support them natively. That's standard behavior for any converter. If you need to preserve annotations, consider adding them as a dedicated key-value pair in your YAML structure before converting.

A YAML doesn't guarantee key order, and neither does JSON. Our converter preserves the order your YAML parser produces, which matches how js-yaml reads the file. If you need sorted keys, copy the JSON into a formatter tool. For most use cases like API configs, order doesn't matter. Just focus on the structure being correct.