TOML Syntax Validator & Linter

Validate TOML syntax, identify parsing errors, and verify table declarations with exact line highlights.

This tool is currently being prepared. The specification is finalized and implementation is underway.

How It Works & Processing Standards

Validate TOML syntax, identify parsing errors, and verify table declarations with exact line highlights.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

TOML Syntax Validator & Linter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use TOML Syntax Validator & Linter

  1. 1
    Paste TOMLPaste TOML text into the validator.
  2. 2
    ValidateRun syntax checks against TOML specifications.
  3. 3
    View DiagnosticsSee validation status and error line numbers if any issues exist.

Examples

Valid TOML
Input: [project] name = "pinkale" version = "1.0"
Result: Valid TOML: Parsing completed with 0 errors.

Common Use Cases

  • Pre-commit validation of pyproject.toml and Cargo.toml configuration files
  • Debugging build failures caused by malformed TOML syntax
  • Verifying automated TOML configuration generators

Frequently Asked Questions (FAQ)

Which TOML version specification is supported?

The validator supports TOML v1.0.0, including heterogeneous arrays, multiline strings, and inline tables.

Have feedback or ideas for this tool? Suggest & Inquire →