Data & Tables
YAML to JSON Converter
Convert YAML to JSON online. Safely transform YAML lists and objects into JSON locally in your browser.
Tool
Convert YAML to JSON online. Safely transform YAML lists and objects into JSON locally in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this YAML to JSON Converter to transform YAML documents into JSON for tools and workflows that prefer strict object syntax. Lists, objects, strings, numbers, booleans, and null values can be serialized to JSON after safe parsing. The converter should avoid executing custom YAML behavior and should clearly warn when anchors, aliases, comments, or tags cannot be represented in plain JSON.
Examples
- products: - sku: A-100 name: Notebook stock: 42 - sku: A-101 name: Desk Lamp stock: 18
Frequently Asked Questions
Is my YAML data uploaded to a server?
No. The tool parses, transforms, previews, and exports data locally in your browser without uploading your input.
Are custom YAML tags executed?
No. YAML is parsed as data only. Custom tags, anchors, and comments may not survive conversion, and no user-provided code is executed.
Can every YAML document become JSON?
Most plain lists and objects can. YAML features such as comments, anchors, aliases, and custom tags may be simplified or omitted because JSON has no direct equivalent.
Is the output pretty-printed?
The tool should offer readable indentation and compact output options so users can choose the JSON style they need.
What file sizes are practical in the browser?
Small and medium tables are the best fit. Very large files can use a lot of memory because parsing, previews, and exported results all live inside the browser tab.