TOML to JSON

Config converted.

TOML to JSON. Instantly.

TOML
JSON
0 chars → 0 chars
No upload
Works offline
No tracking

Need batch TOML conversion? The offline bundle converts without limits. $99 once.

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// How it works

Three steps. Zero uploads.

01
Paste
Paste your TOML configuration. It stays on your device.
02
Convert
fwip parses TOML sections, tables, and arrays into clean JSON.
03
Copy
Copy or download the JSON. Nothing was uploaded.
// Why this is different

Convert config files without sharing them.

Most TOML converters send your configuration to a server. Your Cargo.toml, pyproject.toml, and other config files may contain sensitive information.

fwip works differently. The conversion engine runs entirely in your browser. Your data is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

What is TOML?▾
TOML (Tom's Obvious Minimal Language) is a configuration file format used by Rust (Cargo.toml), Python (pyproject.toml), Hugo, and other tools. It's designed to be easy to read and map to a dictionary.
Does this handle nested tables?▾
Yes. Both dotted keys (a.b.c = value) and section headers ([section.subsection]) are parsed into nested JSON objects.
What about arrays of tables?▾
Yes. Double-bracket sections ([[array]]) are parsed into JSON arrays of objects, matching the TOML specification.
What TOML features are supported?▾
Strings, integers, floats, booleans, datetimes, arrays, inline tables, dotted keys, sections, and arrays of tables. Covers the vast majority of real-world TOML files.
Can I convert JSON back to TOML?▾
Not currently. JSON-to-TOML conversion requires making choices about table style, key ordering, and formatting that are hard to automate well. Use YAML to JSON for bidirectional conversion.
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