yamltojson.dev is a collection of free, browser-based data format converters. Paste your data and convert instantly between YAML, JSON, XML, and CSV — no account, no upload, no watermark. The home page does YAML ↔ JSON; dedicated pages handle XML ↔ JSON, JSON ↔ CSV, and CSV ↔ JSON.
Developers convert between these formats constantly — turning a YAML config into JSON for an API, an XML feed into JSON for a front end, or a JSON export into a CSV for a spreadsheet. Plenty of existing tools are cluttered with ads above the fold, ask you to sign up, or quietly upload your data to a server. This site was built to do one thing well: convert fast, locally, and cleanly.
All conversion is computed locally in your browser. Nothing you paste is uploaded or stored on a server, so the tools are safe to use with config files and private data. See the Privacy Policy for details.
yamltojson.dev is built and maintained by an independent developer as a small, focused set of utilities for engineers. It is free to use and continually improved based on feedback.
Open the converter →Spotted a bug or want another format supported? Reach out via the contact page or email hi@yamltojson.dev.