JSON editor
Edit JSON stored in long text fields
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JSON is a popular text format to store information that is both structured and lightweight. Because JSON is just text, you can keep it in a single line or long text field. The JSON editor app makes it easier to work with JSON by formatting the contents of the field with colored syntax, indenting, and warnings for malformed JSON.
As soon as you select a cell in grid view for a single line or long text field, you can start typing in the app to add or change the JSON contents.