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Generate MobX-State-Tree models with typed props inferred from a JSON sample.
Input
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Output
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Status
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Time
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This conversion runs entirely in your browser — your input never leaves your device.
JSON to MobX-State-Tree is a free online converter on AltFTool that generates MobX-State-Tree models with typed props inferred from a JSON sample — no signup and nothing to install.
The conversion runs entirely in your browser: the JSON you paste is converted on your own device and is never uploaded to AltFTool. JSON to MobX-State-Tree is powered by a converter written specifically for AltFTool, on top of mobx-state-tree, and the MobX-State-Tree result can be copied or downloaded as json-to-mobx-state-tree.ts.
The shape of the output is inferred from the JSON sample you paste, so the keys, types and nesting in your input decide the keys, types and nesting you get back.
| Input format | JSON |
|---|---|
| Output format | MobX-State-Tree (TypeScript syntax) |
| Output file | json-to-mobx-state-tree.ts (text/plain) |
| Runs | In your browser — the input is not uploaded. |
| Library | Written for AltFTool, using mobx-state-tree |
| Category | JSON converters on AltFTool |
Open JSON to MobX-State-Tree on AltFTool — the converter loads straight away, with no account.
Paste your JSON into the left-hand input pane, or press Sample to load a working example.
The conversion runs automatically about 300ms after you stop typing — there is no Convert button, and nothing is uploaded while it works.
If this converter exposes options, open Settings to change them — the output re-runs as you adjust.
Copy the MobX-State-Tree output with the Copy button, or download it as json-to-mobx-state-tree.ts.
No. JSON to MobX-State-Tree runs entirely in your browser using a converter written specifically for AltFTool, on top of mobx-state-tree, so the JSON you paste is converted on your own device and never reaches AltFTool's server.
A converter written specifically for AltFTool — no third-party library performs the conversion, though it does use mobx-state-tree along the way. It runs in your browser.
There is no server-side limit, because nothing is uploaded — JSON to MobX-State-Tree converts in your browser, so the practical ceiling is your own device's memory.
The result is MobX-State-Tree. Copy it from the output pane in one click, or download it as json-to-mobx-state-tree.ts — AltFTool names the file after the converter and serves it as text/plain.
Yes. JSON to MobX-State-Tree is free to use on AltFTool, with no account and no sign-up.
Drop the live JSON to MobX-State-Tree workspace into your own docs page, tutorial or blog post with one snippet. Free, responsive, light and dark — just keep the “Widget by AltFTool” credit link visible.
<iframe src="https://www.altftool.com/embed/widget/transform/json-to-mobx-state-tree"
title="JSON to MobX-State-Tree Converter — free AltFTool widget"
width="100%" height="820" style="border:0;border-radius:12px;overflow:hidden"
loading="lazy" referrerpolicy="no-referrer-when-downgrade" allow="clipboard-write"></iframe>
<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/transform/json-to-mobx-state-tree?utm_source=embed&utm_medium=widget" rel="nofollow">AltFTool — free online tools</a></p>More of AltFTool's JSON and format tooling, and the guides around it.