# JSON.STRLEN Report the length of the JSON String at `path` in `key` [Examples](#examples) ## Required arguments

key

is key to parse.

## Optional arguments

path

is JSONPath to specify. Default is root `$`, if not provided. Returns null if the `key` or `path` do not exist.

## Return JSON.STRLEN returns by recursive descent an array of integer replies for each path, the string's length, or `nil`, if the matching JSON value is not a string. For more information about replies, see [Redis serialization protocol specification](https://redis.io/docs/latest/develop/reference/protocol-spec). ## Examples redis> JSON.SET doc $ '{"a":"foo", "nested": {"a": "hello"}, "nested2": {"a": 31}}' OK redis> JSON.STRLEN doc $..a 1) (integer) 3 2) (integer) 5 3) (nil) ## See also [`JSON.ARRLEN`](https://redis.io/docs/latestcommands/json.arrlen/) | [`JSON.ARRINSERT`](https://redis.io/docs/latestcommands/json.arrinsert/) ## Related topics * [RedisJSON](https://redis.io/docs/latest/develop/data-types/json/) * [Index and search JSON documents](https://redis.io/docs/latest/develop/interact/search-and-query/indexing/)