JSON Schema Generator
Turn a document you already have into a JSON Schema that describes it, and see which keys the sample says are optional.
关于此工具
A schema generated from a sample is a description of what was in the sample, not a specification, and this page treats it that way. An array is read as a list of records and every element is merged into one description, so a key missing from any record comes back as not required rather than quietly required. A field that is a whole number everywhere is called an integer, and one fraction anywhere makes it a number. A string format is only claimed when every string in that position matched the same pattern, which is what stops one lucky value from turning a free text field into a date. Two genuinely different types in one position become a type array. What this cannot do is know about the records you did not paste, so read the output as a starting point and widen it where your data is looser than your sample.
使用方法
- Paste a document, or several records in an array, into the input pane.
- Choose the draft, and whether to detect string formats and mark required keys.
- Copy the schema or download it as a file.