Free online tool

TOML Config Validator

Check TOML syntax, find parsing errors, and inspect the values behind each configuration key.

Works on your deviceNo account neededTOMLOpen workspace ↓

What does TOML validation check?

The validator parses the document and reports malformed syntax or invalid key definitions. A successful result shows the parsed key paths and value types.

Your input

0 characters

Your input stays in this browser.

Your result

A little clarity, right here.

Start with your own content or load the example. Your result will appear here.

Three simple steps

How to use TOML Config Validator

  1. Paste your content or choose a supported file.

  2. Adjust the options, then run the tool.

  3. Review the result and copy or download it.

Common questions

Good to know

Understand the result.
Keep the original.

Is this tool free, and are my files uploaded?

This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.

What are the limits and details?

Valid TOML syntax does not guarantee that a particular application accepts the settings. Check that application's configuration schema too.

Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.