# jupytext > Tool to convert Jupyter notebooks to plain text documents, and back again. > More information: . - Turn a notebook into a paired `.ipynb`/`.py` notebook: `jupytext --set-formats ipynb,py {{notebook.ipynb}}` - Convert a notebook to a `.py` file: `jupytext --to py {{notebook.ipynb}}` - Convert a `.py` file to a notebook with no outputs: `jupytext --to notebook {{notebook.py}}` - Convert a `.md` file to a notebook and run it: `jupytext --to notebook --execute {{notebook.md}}` - Update the input cells in a notebook and preserve outputs and metadata: `jupytext --update --to notebook {{notebook.py}}` - Update all paired representations of a notebook: `jupytext --sync {{notebook.ipynb}}`