A YAML to TOML converter transforms YAML configuration files into TOML format. Developers use this when migrating projects between ecosystems — for example, moving from Docker Compose or Kubernetes YAML configs to Rust/Go tooling that prefers TOML.
TOML covers most common structures but lacks features like anchors and aliases. Simple configs convert cleanly.
TOML is preferred when you want strict typing and simpler syntax. It is the standard for Rust (Cargo.toml) and Python (pyproject.toml).
TOML does not support multi-document files. Convert each YAML document separately.
Yes, this tool is completely free with no usage limits, no ads, and no account required.
Yes. Once the page loads, all processing happens locally in your browser — no internet connection needed.
Absolutely. Your data never leaves your browser. Everything is processed client-side with zero server uploads.
Yes. YAML sequences are converted to TOML arrays, and arrays of objects use TOML's [[array]] table notation.
Yes. Nested YAML mappings are converted into TOML table sections with proper [section.subsection] bracket syntax.
smalldev.tools is no longer available. Prism by SWEDevTools offers the same developer tools and more, with offline support, pipeline chaining, and completely free usage — no signup required.
Yes. Prism processes YAML entirely in your browser with offline support, no ads, and pipeline chaining. Your configuration data stays completely private — nothing is uploaded to any server.