Positions connect nodes to source
The JSON includes bounded node types, values, children, and source positions so an integration can trace structure back to the pasted document.
Processing stays in this browser and is bounded by a 500 KiB Markdown limit, a 256 KiB HTML limit, a 1 MiB result limit, and explicit syntax-tree limits. The public tool never calls the developer API, fetches a URL, or stores a preset.