> For the complete documentation index, see [llms.txt](https://docs.pylenium.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pylenium.io/configuration.md).

# Configuration

- [pylenium.json](https://docs.pylenium.io/configuration/pylenium-json.md): The configuration file for Pylenium
- [Driver](https://docs.pylenium.io/configuration/driver.md): Configure the driver via the pylenium.json or the CLI.
- [Viewport](https://docs.pylenium.io/configuration/viewport.md): Configure the viewport, or browser window dimensions, for all tests.