Data
Turn your YAML files into JSON in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Indentation matters: one extra space changes the meaning. As JSON any program or API can use it directly.
YAML represents the same data as JSON but with indentation instead of braces, meant to be read and written by hand.
Strengths: It is the configuration format of Docker, Kubernetes, GitHub Actions and many tools.
Limits: Indentation matters: one extra space changes the meaning.
JSON is the data format of APIs and web apps: nested lists and objects as text.
Strengths: Every programming language reads it and it is easy to validate.
Limits: For a person, a table in JSON is harder to read than a spreadsheet.
No. The YAML to JSON conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Up to 1 GB on desktop and about 200 MB on mobile, although a huge spreadsheet may take a few seconds.
Yes. Drop as many YAML files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each JSON or all of them in a ZIP.