YAML / TOML / JSON / XML Converter

Convert between YAML, JSON, TOML, and XML in real time — paste any format, get any other. Perfect for config files, APIs, and data pipelines. No server upload.

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About this tool

Convert between the four most common serialization formats entirely in your browser. Ideal for translating Kubernetes YAML into JSON, migrating from XML configs to TOML, or quickly understanding an unfamiliar format.

Supported formats

JSON — the universal format for APIs and package.json-style configs.
YAML — human-readable format used by Docker Compose, Kubernetes, GitHub Actions, Ansible, and more.
TOML — Tom's Obvious Minimal Language; used by Rust's Cargo.toml, Python's pyproject.toml, Hugo, and uv.
XML — used by Maven (pom.xml), Spring Boot, RSS/Atom, SOAP, and many legacy systems.

Notes

TOML does not support null values — they are dropped during conversion to TOML.
XML arrays serialize as repeated same-name elements; attributes are stored under @_attr keys.
All processing happens in your browser — nothing is uploaded to any server.