JSON to YAML converter
Convert JSON to YAML as you type. Nothing is uploaded, and the result can be previewed as a table, copied or downloaded.
Loading the converter… It runs locally in your browser.
How to convert JSON to YAML
- Paste your JSON into the input panel, drop a file onto it, or press “Open file”.
- Adjust the options above the panels (delimiter, header row, alignment and so on).
- Check the result: switch the output to “Table” view to see it as a grid.
- Press “Copy” or “Download .yaml”. The conversion runs on your device, so large files never leave it.
Output uses two-space indentation and block style, and quotes strings only where YAML would otherwise misread them (for example "on", "null" or "08").
About JSON
JavaScript Object Notation (RFC 8259): nested objects and arrays with strings, numbers, booleans and null. The default payload format of web APIs.
About YAML
YAML 1.2: an indentation-based superset of JSON used for configuration files (Kubernetes, GitHub Actions, Docker Compose, OpenAPI).
Questions people ask
Is my JSON data uploaded anywhere?
No. The JSON to YAML conversion runs entirely in your browser with JavaScript. The page works offline once it has loaded, and TableForge never receives your data.
How large a file can I convert?
The limit is your device's memory. Files of tens of megabytes (hundreds of thousands of rows) convert fine on a typical laptop. The preview shows the first 200 rows, but the download always contains every row.
Does the converter keep special characters and commas?
Yes. Fields containing commas, quotes or line breaks are quoted and escaped according to each format's rules, and text is read and written as UTF-8, so accents, CJK characters and emoji survive.
Can I convert YAML back to JSON?
Yes, use the YAML to JSON converter at tableforge.io/yaml-to-json, or the universal converter on the home page.