JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format. Copy and paste, directly type, or input a URL in the editor above and let JSONLint tidy and validate your messy JSON code.
Sources : https://github.com/circlecell/jsonlint.com
Via river.
A shell command to create JSON: jo
Sources : https://github.com/jpmens/jo
Rejoint http://www.bortzmeyer.org/jq.html