|---| | [ View source on GitHub](https://github.com/keras-team/keras/tree/v2.15.0/keras/preprocessing/text.py#L578-L613) | Parses a JSON tokenizer configuration and returns a tokenizer instance. tf.keras.preprocessing.text.tokenizer_from_json( json_string ) > [!WARNING] > **Deprecated:** [`tf.keras.preprocessing.text.Tokenizer`](https://www.tensorflow.org/versions/r2.15/api_docs/python/tf/keras/preprocessing/text/Tokenizer) does not operate on tensors and is not recommended for new code. Prefer [`tf.keras.layers.TextVectorization`](https://www.tensorflow.org/versions/r2.15/api_docs/python/tf/keras/layers/TextVectorization) which provides equivalent functionality through a layer which accepts [`tf.Tensor`](https://www.tensorflow.org/versions/r2.15/api_docs/python/tf/Tensor) input. See the [text loading tutorial](https://www.tensorflow.org/tutorials/load_data/text) for an overview of the layer and text handling in tensorflow.


| ## Args || |---|---| | `json_string` | JSON string encoding a tokenizer configuration. |



| ## Returns || |---|---| | A Keras Tokenizer instance ||