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Data & Dev Config • Zero-Server RAM Execution

Convert JavaScript Object to TOML Online - Free, Local & Instant

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

JavaScript Object → TOML ⇄ Swap (TOML → JavaScript Object)

Technical Comparison: JavaScript Object vs TOML

Data & Dev Config
Specification JavaScript Object (Source) TOML (Target)
Full Specification ES Module JavaScript Object Literal Tom's Obvious, Minimal Language v1.0
File Extension & MIME .js (text/javascript) .toml (application/toml)
Data Typing Model Unquoted identifier keys, single-quoted strings, ES export default Strong (strings, integers, floats, booleans, RFC 3339 dates, arrays)
Structure & Hierarchy Arbitrarily nested JS objects and arrays Section tables [table] and [[array_of_tables]]
Comments Support Supported (// and /* */) Supported (# comment)
Primary Ecosystem Vite/Webpack configs, TypeScript/JS mock data, Next.js constants Rust Cargo.toml, Python pyproject.toml, Hugo static sites

JavaScript Object to TOML — 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 (TOML Output)
[[items]]
id = 1
name = "Alice Johnson"
email = "alice@example.com"
role = "admin"
active = true
score = 98.5

[items.address]
city = "Berlin"
country = "DE"

[[items]]
id = 2
name = "Bob Smith"
email = "bob@example.com"
role = "editor"
active = false
score = 87

[items.address]
city = "Austin"
country = "US"

[[items]]
id = 3
name = "Chiara Rossi"
email = "chiara@example.com"
role = "viewer"
active = true
score = 91.25

[items.address]
city = "Milan"
country = "IT"

Frequently Asked Questions: JavaScript Object to TOML

How do I convert JavaScript Object to TOML 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 TOML 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 TOML? ▾

When converting hierarchical structures (Arbitrarily nested JS objects and arrays) and tabular or config formats (Section tables [table] and [[array_of_tables]]), 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 TOML 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 TOML back to JavaScript Object? ▾

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