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Convert JavaScript Object to Python Dict Online - Free, Local & Instant

Instant JavaScript Object (.js) to Python Dict (.py) converter. 100% client-side processing in your browser RAM — zero file uploads, full privacy, drag & drop or paste raw text.

JavaScript Object → Python Dict ⇄ Swap (Python Dict → JavaScript Object)

Technical Comparison: JavaScript Object vs Python Dict

Data & Dev Config
Specification JavaScript Object (Source) Python Dict (Target)
Full Specification ES Module JavaScript Object Literal Python Dictionary & List Literal
File Extension & MIME .js (text/javascript) .py (text/x-python)
Data Typing Model Unquoted identifier keys, single-quoted strings, ES export default Python native True, False, None, dict {}, and list [] literals
Structure & Hierarchy Arbitrarily nested JS objects and arrays Nested dictionaries and lists ready for Python scripts
Comments Support Supported (// and /* */) Supported (# comment)
Primary Ecosystem Vite/Webpack configs, TypeScript/JS mock data, Next.js constants Django settings, FastAPI fixtures, data science notebooks, ETL scripts

JavaScript Object to Python Dict — Before & After Example

Before (JavaScript Object Input)
const data = [
  {
    id: 1,
    name: 'Alice Johnson',
    email: 'alice@example.com',
    role: 'admin',
    active: true,
    score: 98.5,
    address: {
      city: 'Berlin',
      country: 'DE',
    },
  },
  {
    id: 2,
    name: 'Bob Smith',
    email: 'bob@example.com',
    role: 'editor',
    active: false,
    score: 87,
    address: {
      city: 'Austin',
      country: 'US',
    },
  },
  {
    id: 3,
    name: 'Chiara Rossi',
    email: 'chiara@example.com',
    role: 'viewer',
    active: true,
    score: 91.25,
    address: {
      city: 'Milan',
      country: 'IT',
    },
  },
];

export default data;
After (Python Dict Output)
data = [
  {
    "id": 1,
    "name": "Alice Johnson",
    "email": "alice@example.com",
    "role": "admin",
    "active": True,
    "score": 98.5,
    "address": {
      "city": "Berlin",
      "country": "DE",
    },
  },
  {
    "id": 2,
    "name": "Bob Smith",
    "email": "bob@example.com",
    "role": "editor",
    "active": False,
    "score": 87,
    "address": {
      "city": "Austin",
      "country": "US",
    },
  },
  {
    "id": 3,
    "name": "Chiara Rossi",
    "email": "chiara@example.com",
    "role": "viewer",
    "active": True,
    "score": 91.25,
    "address": {
      "city": "Milan",
      "country": "IT",
    },
  },
]

Frequently Asked Questions: JavaScript Object to Python Dict

How do I convert JavaScript Object to Python Dict online without uploading sensitive files? ▾

Paste your JavaScript Object data or drag and drop a .js file into the converter above. ZeroUpload parses JavaScript Object and serializes Python Dict 100% inside your browser RAM using local JavaScript—no bytes are ever sent to an external server.

How are nested objects or tabular columns mapped between JavaScript Object and Python Dict? ▾

When converting hierarchical structures (Arbitrarily nested JS objects and arrays) and tabular or config formats (Nested dictionaries and lists ready for Python scripts), our engine automatically flattens or unflattens dot-separated keys (such as address.city) and preserves numbers, booleans, arrays, and null values.

Is this JavaScript Object to Python Dict converter free for commercial and production config files? ▾

Yes. The tool is completely free, requires no account or API key, and works offline once loaded. Because execution happens in local memory, it is safe for proprietary JavaScript Object, database exports, and production secrets.

Can I convert Python Dict back to JavaScript Object? ▾

Yes! Click the "Swap (Python Dict → JavaScript Object)" button at the top of the workspace or use the reverse converter link at the bottom of this page for bidirectional conversion.