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SleekPrompt

Convert YAML to JSON

Convert YAML config into JSON and catch indentation mistakes at the same time. Nothing is uploaded anywhere.

YAML input

empty

JSON output

Ready

How to use the YAML to JSON

  1. 1

    Paste your YAML, or drop a .yaml / .yml file.

  2. 2

    JSON appears instantly — indentation errors are reported with a line number.

  3. 3

    Copy or download the JSON result.

Frequently asked questions

Why does my YAML fail to parse?

Almost always indentation: YAML forbids tab characters for indentation, and list items must line up consistently. The error message points at the offending line.

Does it support multi-document YAML?

Yes. Files separated by --- are parsed into a JSON array, one entry per document.

Is my data uploaded to a server?

No. Every tool on this site runs entirely inside your browser using JavaScript. Your input never leaves your device and is never sent over the network, which means it is safe to paste production data, API responses and tokens.