How to use the TOML to JSON
- Paste your TOML into the input box, or open a file.
- Adjust the options if needed. The output updates as you type.
- Copy the JSON or download it as a file.
About TOML
TOML is a minimal configuration format with clear key = value pairs and [sections]. It powers Cargo.toml, pyproject.toml, Hugo and many other tool configs.
About JSON
JSON (JavaScript Object Notation) is the default data format of web APIs, package manifests and most configuration tooling. It supports objects, arrays, strings, numbers, booleans and null.
Private by design
Developer data is often sensitive: API responses, tokens, customer records, internal configs. This TOML to JSON processes everything locally in your browser tab. There is no server round-trip, no logging and no storage of your input.
Frequently asked questions
Is this TOML to JSON free?
Yes. This TOML to JSON is completely free to use with no sign-up, no limits and no ads inside the tool.
Is my data uploaded to a server?
No. The TOML to JSON runs entirely in your browser using JavaScript. Nothing you paste is sent to DevT Pro or any other server.
Does the TOML to JSON conversion lose data?
The structure and values of your TOML are preserved. Formatting details such as comments are not carried over.
Can I use the TOML to JSON offline?
Yes. TOML to JSON is also built into DevT Pro, a native app for Mac, Windows, iPad and Linux with 120+ developer tools that work fully offline. It is a $5.99 one-time purchase with no subscription.
